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Acharya N G Ranga Agricultural University, Guntur

The Andhra Pradesh Agricultural University (APAU) was established on 12th June 1964 at Hyderabad. The University was formally inaugurated on 20th March 1965 by Late Shri. Lal Bahadur Shastri, the then Hon`ble Prime Minister of India. Another significant milestone was the inauguration of the building programme of the university by Late Smt. Indira Gandhi,the then Hon`ble Prime Minister of India on 23rd June 1966. The University was renamed as Acharya N. G. Ranga Agricultural University on 7th November 1996 in honour and memory of an outstanding parliamentarian Acharya Nayukulu Gogineni Ranga, who rendered remarkable selfless service for the cause of farmers and is regarded as an outstanding educationist, kisan leader and freedom fighter. HISTORICAL MILESTONE Acharya N. G. Ranga Agricultural University (ANGRAU) was established under the name of Andhra Pradesh Agricultural University (APAU) on the 12th of June 1964 through the APAU Act 1963. Later, it was renamed as Acharya N. G. Ranga Agricultural University on the 7th of November, 1996 in honour and memory of the noted Parliamentarian and Kisan Leader, Acharya N. G. Ranga. At the verge of completion of Golden Jubilee Year of the ANGRAU, it has given birth to a new State Agricultural University namely Prof. Jayashankar Telangana State Agricultural University with the bifurcation of the state of Andhra Pradesh as per the Andhra Pradesh Reorganization Act 2014. The ANGRAU at LAM, Guntur is serving the students and the farmers of 13 districts of new State of Andhra Pradesh with renewed interest and dedication. Genesis of ANGRAU in service of the farmers 1926: The Royal Commission emphasized the need for a strong research base for agricultural development in the country... 1949: The Radhakrishnan Commission (1949) on University Education led to the establishment of Rural Universities for the overall development of agriculture and rural life in the country... 1955: First Joint Indo-American Team studied the status and future needs of agricultural education in the country... 1960: Second Joint Indo-American Team (1960) headed by Dr. M. S. Randhawa, the then Vice-President of Indian Council of Agricultural Research recommended specifically the establishment of Farm Universities and spelt out the basic objectives of these Universities as Institutional Autonomy, inclusion of Agriculture, Veterinary / Animal Husbandry and Home Science, Integration of Teaching, Research and Extension... 1963: The Andhra Pradesh Agricultural University (APAU) Act enacted... June 12th 1964: Andhra Pradesh Agricultural University (APAU) was established at Hyderabad with Shri. O. Pulla Reddi, I.C.S. (Retired) was the first founder Vice-Chancellor of the University... June 1964: Re-affilitation of Colleges of Agriculture and Veterinary Science, Hyderabad (estt. in 1961, affiliated to Osmania University), Agricultural College, Bapatla (estt. in 1945, affiliated to Andhra University), Sri Venkateswara Agricultural College, Tirupati and Andhra Veterinary College, Tirupati (estt. in 1961, affiliated to Sri Venkateswara University)... 20th March 1965: Formal inauguration of APAU by Late Shri. Lal Bahadur Shastri, the then Hon`ble Prime Minister of India... 1964-66: The report of the Second National Education Commission headed by Dr. D.S. Kothari, Chairman of the University Grants Commission stressed the need for establishing at least one Agricultural University in each Indian State... 23, June 1966: Inauguration of the Administrative building of the university by Late Smt. Indira Gandhi, the then Hon`ble Prime Minister of India... July, 1966: Transfer of 41 Agricultural Research Stations, functioning under the Department of Agriculture... May, 1967: Transfer of Four Research Stations of the Animal Husbandry Department... 7th November 1996: Renaming of University as Acharya N. G. Ranga Agricultural University in honour and memory of an outstanding parliamentarian Acharya Nayukulu Gogineni Ranga... 15th July 2005: Establishment of Sri Venkateswara Veterinary University (SVVU) bifurcating ANGRAU by Act 18 of 2005... 26th June 2007: Establishment of Andhra Pradesh Horticultural University (APHU) bifurcating ANGRAU by the Act 30 of 2007... 2nd June 2014 As per the Andhra Pradesh Reorganization Act 2014, ANGRAU is now... serving the students and the farmers of 13 districts of new State of Andhra Pradesh with renewed interest and dedication...

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End date: 2022 × Start date: 2022 × Type: Thesis × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    IMPACT OF SOIL HEALTH CARDS ON RICE CULTIVATION IN ANDHRA PRADESH
    (guntur, 2022-09-07) NAVEEN, B.; PRASAD, S.V.
    ABSTRACT The present study entitled ‘Impact of Soil Health Cards on rice cultivation in Andhra Pradesh’ had been initiated focusing on attitude of farmers towards Soil Health Card and Impact of Soil Health Card on farmers with the following objectives; the profile of Soil Health Card farmers, develop attitude scale and measure the attitude of the farmers towards Soil Health Cards, the impact of Soil Health Card on farmers, the relationship between the attitude, impact and profile of the farmers and the problems faced by the farmers in the adoption of recommendations of Soil Health Cards and elicit suggestions to overcome them. Ex post facto research design was used for conducting the study. Andhra Pradesh state was selected purposively for the study as the researcher hails from the same state and is familiar with local language and culture. Three districts of Andhra Pradesh namely East Godavari, West Godavari and Krishna were selected purposively based on the highest area under rice cultivation. Two mandals from each of the selected districts were selected purposively based on the highest area under rice cultivation, for present study. Two villages were selected from each of the 6 mandals by following simple random sampling thus making a total of 12 villages. From each village, 20 farmers possessing Soil Health Cards were selected by following simple random sampling procedure, thus making a total of 240 respondents for the study. Thirteen independent variables and two dependent variables viz., attitude of the farmers towards Soil Health Card and impact of Soil Health Card on farmers were selected for the study. A pre tested interview schedule with measurement devices of all the variables was used for the collection of raw data. The data were collected by personal interview method through a structured interview schedule and analyzed by employing suitable statistical methods. The analysis of profile characteristics of the farmers indicated that majority of the respondents belonged to middle age, middle school education, semi medium land holding with medium farming experience, extension contact, mass media xvii exposure, social participation, achievement motivation, scientific orientation, management orientation, innovativeness, economic orientation and differed gratification. The detailed analysis of the dependent variables indicated that majority (74.58%) of SHC rice farmers had medium favourable attitude followed by high (15.84%) and less (9.58%) favourable attitude. The Soil Health Card has shown 24.50 per cent of impact on the rice farmers. The study also revealed that different indicators of dependent variable i.e., change in dosage of fertilizers, micro nutrients, manures and soil amendments, change in sources of fertilizers, change in time of application, change in problematic soil management, change in pest and disease management, change in cost of inputs, change in yield level, change in income has shown significant change. SHC had shown medium (53.33%) level of impact followed by low (30.42%) and high (16.25%) levels of impact on the farmers. The computed correlation coefficient (r) values of education, farm size, extension contact, mass media exposure, social participation, achievement motivation, scientific orientation, innovativeness, economic orientation and differed gratification were positively significant at 0.01per cent level of probability and management orientation was also positively significant at 0.05 per cent level of probability in their relationship with attitude of the farmers. However, age and farming experience exhibited negative and non-significant relationship with attitude of the farmers. The computed correlation coefficient (r) values of education, farm size, extension contact, mass media exposure, social participation, achievement motivation, scientific orientation, management orientation, innovativeness, economic orientation, and differed gratification were positively significant at 0.01per cent level of probability. However, farming experience exhibited negative and significant relationship and finally age exhibited negative and non-significant relationship with impact of SHC on farmers. The major problems perceived by the farmers about SHC were; calculation of fertilizer doses was difficult on the basis of nutrient status of the soil, difficult to understand SHC information without expert, the quantity of FYM recommended as per SHC was not available for farming and lack of trust on SHC information with regards to reliability and validity. The major suggestions elicited by farmers to surmount problems regarding Soil Health Card were: Calculation of fertilizer dose of application through SHC should be made easy, availability of micronutrient status of soil in SHC should be displayed, subsidies for fertilizers should be given as per soil heath card and innovative farmers should follow the SHC recommendation which should make other farmers to follow SHC.
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    ThesisItemOpen Access
    MORPHOLOGICAL, BIOCHEMICAL AND MOLECULAR CHARACTERIZATION OF FOXTAIL MILLET [Setaria italica (L.) Beauv.] GERMPLASM
    (guntur, 2022-08-25) SANDHYA, MUNAGAPATI; RAMANA, J. V.
    The present study was carried out with the prime objective of assessing morphological, biochemical and molecular diversity in 100 genotypes of foxtail millet. The experiment was conducted at Regional Agricultural Research Station (RARS), Lam, Guntur in Augmented Randomized Complete Block Design (ARCBD) during kharif, 2017 and rabi, 2017-18. Morphological and biochemical data for 21 parameters collected from these genotypes was pooled over seasons and analyzed for divergence using Mahalanobis’ D2 statistic and PCA analysis. Molecular divergence was estimated using 85 SSR markers. Highly significant variability was observed among the 100 genotypes for plant height (PH), carbohydrate (CARB), calcium (Ca), carotene (CARO) and phenols (PHE); whereas moderate variability was observed for days to 50% flowering (DFF), panicle length (PL), days to maturity (DM), grain yield (GYP), protein (PRO) and folic acid (FOA). Eight genotypes viz. ISe 1286, ISe 751, ISe 1201, ISe 1181, ISe 1674, ISe 1511, ISe 1704 and ISe 1338 were observed to be superior for at least four nutritional parameters (carbohydrate (CARB), protein (PRO), fat (FAT), crude fibre (CF), calcium (Ca), iron (Fe), phosphorous (P), potassium (K), niacin (NI), thiamine (TH), carotene (CARO), phenols (PHE), folic acid (FOA), lysine (Lys)) while, the genotypes ISe 1286, ISe 1674, ISe 1511, ISe 1704 and ISe 1338 are calcium rich genotypes. High PCV and GCV (>20%) were recorded for majority of the traits viz. plant height (PH), panicle length (PL), test weight (TW), productive tillers per plant (NPT), grain yield (GYP), crude fibre (CF), calcium (Ca), iron (Fe), phosphorous (P), niacin (NI), thiamine (TH), carotene (CARO), folic acid (FOA) and lysine (Lys) indicating the presence of high amount of variability. Low PCV and GCV (20%) was reported for the traits, days to 50% flowering (DFF), plant height (PH), panicle length (PL), test weight (TW), productive tillers per plant (NPT), days to maturity (DM), protein (PRO), fat, crude fibre (CF), calcium (Ca), iron (Fe), phosphorous (P), niacin (NI), thiamine (TH), carotene (CARO), folic acid (FOA), lysine (Lys) and grain yield (GYP) indicating the operation of additive gene action in the expression and exploitation of these traits by simple selection is suggested for improvement. The correlation studies of present investigation had revealed that the dependent variable grain yield had significant positive correlation with days to 50% flowering (DFF), plant height (PH), panicle length (PL), no. of productive tillers (NPT), days to maturity (DM) and test weight (TW) indicating their key role in selection for improvement of grain yield/plant (GYP). Path analysis also revealed days to 50% flowering (DFF), plant height (PH), panicle length (PL), no. of productive tillers (NPT), days to maturity (DM) and test weight (TW) had true relationship with grain yield per plant (GYP) by establishing significant positive association and positive direct effect revealing their importance in selection of high yielding genotypes in foxtail millet. Mahalanobis’ D2 analysis indicated the presence of substantial diversity in the studied material by forming nine clusters and maximum number of genotypes were present in cluster I (58 genotypes) followed by cluster IV (20 genotypes), cluster II (nine genotypes) and cluster V (eight genotypes). Clusters III, VI, VIII and IX were solitary clusters containing single genotype, ISe 1789, ISe 1685, ISe 1181and ISe 1201, respectively. Among the characters studied highest percentage of contribution towards divergence was noted by grain yield/plant (38.22%) followed by productive tillers per plant (35.46%), plant height (21.21%) and phosphorus (1.9%). The maximum inter cluster distance was observed between clusters, VII and IX (46356.45), followed by clusters VIII and IX (30901.85) and clusters V and VII (27950.79) which suggested the presence of broad genetic divergence among these clusters and can be exploited to generate transgressive segregants for the desired traits. It is apparent that the productive crosses can be expected from ISe 969 (cluster VII with higher mean values for grain yield (GYP), test weight (TW), panicle length (PL), no. of productive tillers (NPT) and calcium (Ca)) with ISe 1201 of cluster IX (higher mean values for fat (FAT), potassium (K), thiamine (TH), folic acid (FOA) and lysine (Lys)) by considering significant divergence and higher mean values for yield and its contributing traits. The principal component analysis (PCA) indicated the contribution of first ten principal components for about 76.59% variability and the contribution of first principal component (PC1) towards variability was 17.651% while PC2 was 10.753% and PC3 was 9.189%. The traits, panicle length (PL), grain yield (GYP) and number of productive tillers (NPT) contributed maximum towards divergence in PC1. Two dimensional (2D) plot based on PCA scores showed that the genotypes ISe 710, ISe 1181, ISe 771 and ISe 969 were scattered relatively away from the other genotypes indicating their usefulness in hybridization programmes. Molecular divergence analysis with 85 simple sequence repeats (SSR) markers resulted thirty polymorphic markers. The Polymorphism Information Content (PIC) values ranged from 0.037 to 0.573 with the mean value of 0.30. High PIC markers with better discriminatory power were SICAAS4007, SICAAS2043, SICAAS6067 and SICAAS9130 and these can be used for diversity studies, gene mapping, molecular breeding and germplasm evaluation. The number of alleles per primer was varied from two to six with an average of 2.56 alleles per primer. The dendrogram prepared from the UPGMA grouped the genotypes into 3 clusters with similarity coefficient value of 0.69. Cluster I had fifty five genotypes and the similarity coefficient range was 0.27 to 0.50. Cluster II had two sub-clusters with similarity coefficient values ranged from 0.33 to 0.69 while cluster III had ten genotypes and the similarity coefficient values ranged from 0.23 to 0.58.The genotype, ISe 746, formed a separate sub-cluster in cluster III as IIIC indicating its’ differentiation from other genotypes of this cluster Morphological, biochemical and molecular diversity of 100 foxtail millet genotypes clearly reported the presence of huge variability for yield and quality parameters. The genotypes viz. Ise237, ISe 710, ISe 1685, ISe 1767, ISe 1773, ISe 1808, ISe 1859, Ise 1888, Ise 90, Ise 771 and Ise 969 recorded high grain yield whereas ISe 1227, ISe 1286, ISe, 1674, Ise 1312 and Ise 1320 are early maturing genotypes. The genotype, ISe 1286, is rich in eight nutritional parameters (protein (PRO), fat, calcium (Ca), iron (Fe), niacin (NI), phenols (PHE), folic acid (FOA) and lysine (Lys)).The superior millet genotypes identified with high yield and nutritive values can be explored for the identification, characterization and mining of genes/alleles governing these traits and this forms the future line of study for other researchers.
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    ThesisItemOpen Access
    DESIGN AND DEVELOPMENT OF USER FRIENDLY PROTECTIVE CLOTHING FOR PESTICIDE APPLICATORS AND DE-STALKERS IN CHILLI CROP
    (guntur, 2022-08-23) PRABHAVATHI, R.; ANITHA, D.
    Pesticides are best tools for timely management of crop pests and diseases which contain some amount of toxic substances that is also harmful to human beings and other domestic animals. Research proved that among the three routes of exposure, majority of the pesticide penetrates human body through skin. Hence, some type of protective clothing is essential and necessary for prevention of such entry. Survey was conducted on 120 pesticide sprayers in Chebrolu Mandal of Guntur district to understand the mode, frequency and type of pesticide used, related health aspects and constraints in using protective garments along with their opinion on user friendly protective gear. Survey results lead to designing of 16, protective garments. Full hands shirt with regular and raglan sleeve, 2 medium sized pockets in the front of shirt and bifurcated pant. Extra protection was provided by adding extra layer of material in scalp of hood and crotch of pant. Net material was provided at the neck of shirt and in hood to make the wearer comfortable. Beak mask, goggles, chemical protective gloves and shoes were provided. Designs were evaluated by experts of subject area and applicators for selection of 5 best designs. Selection of fabric for designed protective garments was done based on previous studies. Two blends were selected i.e. PC and PV in 2 different thickness with a blend ratio of 67:33. Spray testing was done to select one blend. Through spray test results both PC fabrics (PC1 and PC2) were considered. Both fabrics were treated with water repellent finishes - BOND-WR-12 A RTU (F1) and BOND-WR-12 NEAT (F2) following various finishing parameters, and were tested for functional properties. Air permeability values were lower in PC1 at pH 5 for all 4 conc. of finish. Higher pH and higher concentration of finish reduced the wicking ability of fabrics. Reduced wicking ability was observed in PC1 over PC2. PC1 had more thermal insulation than xvii PC2. PC1 fabric had better properties over PC2 with F1 finish. Optimized finishing parameters were conc. 5%., pH-4.5., Drying temperature 1050C., drying time 3 min., curing temperature: 1650C and curing time: 3min. The test fabric was used for construction of 5 protective garment designs selected based on subjective evaluation by applicators and experts. Further treated fabric was tested for barrier performance in the laboratory and in the field situations for 3 toxic pesticides, Phosphamidon, Monocrotophos and Dimethoate that are used by sprayers in chilli crop. Spraying of pesticide was done on samples in the laboratory using a hand spray while field testing consisted of patch test and swab test. After testing, extracts from both control and treated fabrics were evaluated in GC for quantification of pesticide residue. The residues present in 64 cm2 of fabric area were measured and expressed as ng/cm2. The results of the study were statistically analyzed by four factor experiment with CRD. Percentage reduction of absorption and penetration of pesticides in treated fabrics ranged from 42% to 57% over control. Torso front and thigh regions received higher averages in patch test with highest reduction values incase of Monocrotophos. Swab test indicated that skin covered with treated fabric gave good protection for all three pesticides. Higher residue values were observed in both control and treated fabric with Monocrotophos over the other two pesticides. The findings of various tests related to Phosphamidon, Monocrotophos and Dimethoate absorption, penetration and transmission with test fabric samples revealed that PC1 with F1 finish had better barrier properties. Survey on problems associated with de-stalking of dried chilli pods at chilli processing units in and around Guntur was studied and that the study reported that the majority de-stalkers faced the scorching on fingers, cracking on fingers and deformation on nails and hands while on removing stalks. Based on the survey a protective gadget was designed, constructed and evaluated to minimize the problems associated with de- stalking of dried chill pods. Initially 4 types of glove designs were designed and developed and out of which suitable one was selected through subjective evaluation by the subject experts as well as stake holders for their convenience and comfort in wearing. Final glove was made with two types of selected fabric such as 100% cotton and knitted material. Cotton was placed at palm view and knitted was placed at top view of the glove. Finally wear trials were conducted and recorded their opinion. Further, the survey on de-stalkers indicated that they were not wearing any protective gadgets for hands while removing stalks of dried chilli pod. Hence, 4 different designs of gloves were designed of which one was selected by experts and subjects. It‟s a three fourth length style without quirks, with a combination of cotton and knitted material. Both the protective garment and the glove were rated high by maximum number of experts in terms of features and subjects have given high scores for aspects of ease in wearing, comfort and protection. Subjects also opined that developed protective gear will be used by them if available in the market.
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    ThesisItemOpen Access
    SIMULATION OF SOIL MOISTURE AND SOLUTE DYNAMICS IN DRIP FERTIGATED MAIZE CROP USING HYDRUS-3D MODEL
    (guntur, 2022-08-18) RAJA KUMAR, K. N.; MANI, A.
    Water is most valuable gift of nature to the mankind and has been recognized as most important natural resource for increasing agricultural production. Irrational use of water for growing crops led to decrease the country’s water use efficiency (WUE) in agriculture sector. Drip fertigation is an efficient and economically viable method to improve WUE due to its localized application of water and nutrients to crop. Improving the WUE of the system requires the optimization of operational parameters such as irrigation amount and irrigation threshold. Numerical models are a fast and accurate means to optimize such operational parameters with different irrigation scenarios. Therefore, field experiment and simulation study was conducted during kharif 2018, rabi 2018-19 and kharif 2019 at Department of Soil Water Engineering, Dr. NTR College of Agricultural Engineering, Bapatla, Andhra Pradesh to study the soil moisture and nutrient dynamics in the drip fertigated maize crop using Hydrus 3D. The experiment was laid out in split plot design consisting of three irrigation levels (0.6 ETc (I1), 0.8 ETc (I2) and 1.0 ETc (I3)) and four nitrogen levels consisting of fertigation levels (80% RDN (N1), 100% RDN (N2), 120% RDN (N3) and Manual application (N4) on sandy clay loam soil. Water requirement of the maize crop was calculated on the daily basis by using CROPWAT 8.0. Frequency Domain Reflectometry (FDR) Sensor was used to measure soil moisture data by installing 34 access tubes up to a depth of 100 cm with an interval of 10 cm from the soil surface and measured soil water content during crop period. Soil samples were collected at 0, 15, 30, 45 cm distance from emitter across the lateral in the depths of 0-15, 15-30, 30-45, 40-60 cm using soil augur at crop initial stage, development stage, maturity stage and post harvest to determine the available nitrogen. Plant growth parameters, plant height, dry matter production, days to maturity and yield parameters of grain yield, stover yield and 100 grain weight were recorded. A finite element model Hydrus - 3D was selected to simulate the water and nitrogen movement in the root zone and to evaluate different irrigation and fertigation scenarios. Hydrus - 3D was calibrated for simulation of soil moisture and nitrogen distribution in the root zone of the maize crop for kharif 2018 and validated using xix kharif, 2019 dataset. Irrigation scenarios were evaluated for 1.0, 3.0, 4.0 lph emitter discharges at 3h after irrigation, 6h after irrigation, 24h after irrigation at emitter, 15 cm from emitter, 30 cm from emitter and 45 cm from emitter for 70%, 90%, 110% and 130% RDN for soil moisture and available nitrogen in the soil for arriving the best irrigation and fertigation strategy. The highest WUE of 15.44, 34.66 and 16.89 kg ha-1 mm-1 was obtained in I2N3 treatment during kharif 2018, rabi 2018-19 and kharif 2019 respectively. The lowest WUE of 10.10, 19.05 and 10.33 kg ha-1 mm-1 was obtained in I3N1 treatment during kharif 2018, rabi 2018-19 and kharif 2019 respectively. The highest NUE of 32.88 and 33.95 kg kg-1 was estimated in I2N1 treatment during kharif 2018 and kharif 2019 respectively. During rabi 2018-19, the highest NUE of 32.85 kg kg-1 was found in I2N2. The lowest NUE of 21.35 and 22.36 kg kg-1 was obtained in I1N3 treatment during kharif 2018 and rabi 2018-19. During kharif 2019 the lowest NUE of 27.46 kg kg-1 was estimated in I1N4 treatment. The SWC reached above field capacity (28.24%) with 3 lph and 4 lph emitters in the root zone leading to deep percolation. Hence, the emitters with more than 2 lph may not be recommended for irrigating in sandy clay loam soil. The SWC for 1 lph discharge rate with 80% of crop water requirement was low even 3h after irrigation. Soil water content attained field capacity in upper layers after 3h irrigation and maintained well upto 6h and dropped slightly below the field capacity after 24h and even upto 48h before irrigation around 20% of SWC is existing. Therefore, Irrigation scheduling with emitter discharge of 2.0 lph on alternate day basis is appropriate for maize crop in sandy clay loam soil. With drip fertigation nitrogen availability in the active root zone was more than the initial nitrogen content resulting in adequate nitrogen availability in the active root zone of maize crop. Statistical analysis showed that there was significant difference in the yield, water use efficiency and nitrogen use efficiency within the treatments for kharif 2018, rabi 2018-19 and kharif 2019. Soil moisture and nitrogen distribution was not uniform in middle and lower layers of sandy clay loam soil with lower discharge rates (1.0 lph). Higher emitter discharge rates (3.0 lph and 4.0 lph) increased the N distribution in lower soil layers for sandy clay loam soil. Variation of soil moisture between 31.08 % to 18.47 % at 30 cm from emitter clearly indicated the emitter spacing of 30 cm is suitable for irrigating maize crop. Hence, Hydrus model could be used to simulate soil water and solute movement in the soil during crop period and also to develop irrigation and fertigation strategies for increasing WUE. Key words: Hydrus 2D/3D, drip fertigation, Simulation of soil moisture and N, Maize crop
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    ThesisItemOpen Access
    PERFORMANCE EVALUATION OF TELUGU GANGA PROJECT USING REMOTE SENSING AND GIS
    (guntur, 2022-08-18) MURALI KRISHNA, CH.; RAMANA, M. V.
    There is a significant increase in the irrigated agriculture in India, enhancing irrigation potential by huge investments on irrigation projects. Andhra Pradesh is one of the states in which massive irrigation infrastructure is existing under more than 100 projects and huge irrigation potential was created (~40 Lakh ha) and many more projects are in progress. Monitoring of irrigation projects for making an assessment of irrigation potential utilisation is essential on a regular basis in order to have a continuous performance evaluation. Remote sensing and GIS techniques were found to be effective tools for monitoring the irrigation projects on a regular basis. Spatial and temporal monitoring of the projects during the crop growing seasons viz., kharif, and rabi would be necessary to monitor the irrigation potential utilization and take necessary steps for making interventions for improvement. This objective would require spatial-temporal information in a synoptic view to know the progressive and problematic pockets in different irrigated agricultural lands. Satellite data provides a great scope for the synoptic coverage and multi-temporal datasets. At present, there are many satellites which provide such datasets and most of them are available in public domains. Methodology was established for the use of public domain satellite datasets from Landsat 4. The present study was focused on performance evaluation of Telugu Ganga project (TGP) from public domain satellite datasets, and the use of sophisticated modern tools of technology like remote sensing and GIS in the field of canal irrigation management. The project was started initially for supplying the drinking water to Chennai metro city about 15 TMC water. But the command area is in upland areas of Rayalaseema. So these farmers benefitted the regular water supply over the years. The remote sensing technique was used for assessing the crop condition, crop inventory, crop calendar, irrigation potential, irrigation scheduling, yield estimation and yield modelling etc. in the TGP command. xix The Satellite data availability in public domain greatly providing the scope for making a cost-effective solution for acquiring the temporal satellite data at the monthly interval over several irrigation commands. The cost-free satellites like Landsat 4 with spatial resolution of 30 m and Sentinel 2A with spatial resolution of 10 m data were found to be very much suitable for the study at regional level as 16 days interval data are available from USGS (United States Geological Service) Earth archives in the near real time. It was found that the methodology developed in the study would be useful for making a quick analysis of cropping patterns in the study area and also for reporting the same for near real time analysis. For finding out irrigation water requirement, CROPWAT8.0 software has been used successfully. The relationship between canal water, rainfall and yield etc., was established for making crop yield assessment. When 1997 and 2018 were compared, the paddy area has significantly increased by 129.2% (78688 ha to 180351 ha). This was due to improvement of canal water supply in the whole command area. Maximum NDVI images were derived during 1997 and 2018 kharif and rabi seasons data. The performance assessment was carried out in the TGP command area. In total, nine performance indicators were analysed both at macro level and micro level. The mean Irrigation intensity was found to be 71.1% for Chittoor district (for past 6 years), 72.1% for Nellore district (for past 7years), 94.2% for Kurnool district (for past 7 years), and 23.7% for Kadapa district (for past 6 years). This shows that the Irrigation intensity was very good in Kurnool district command and very poor in Kadapa district. The mean irrigation efficiencies were found to be 37.2% for Chittoor district, 50.9 % for Nellore district, 57.3% for Kurnool district, and 37.2 % for Kadapa district. The efficiencies of Chittoor and Kadapa districts were comparatively low. This would imply that nearly 62.8% of the irrigation water has been drained into the sea in one of the losses like (i) seepage losses, (ii) evaporative losses, and (iii) open drainage etc. The mean Adequacy was found to be 255.7% for Chittoor district, 159 % for Nellore district, 188% for Kurnool district, and 131.5% for Kadapa district. This indicated that 155.7%, 59 %, 88%, 31.5% excess water was available in the respective commands. Similarly, uniformity was also found to be 78.1% for Chittoor district, 69% for Nellore district, 81.3% for Kurnool district, and 80.5% for Kadapa district commands. It was found to be highest in Kurnool and lowest in Nellore district commands. The Equity was found to be not distributed uniformly in the entire TGP command. This implied poor managerial conditions existing in the delivery mechanism. The crop water utilization indices were found to be 84% for Chittoor district, 83% for Nellore district, 73% for Kurnool district, and 75% for Kadapa district commands. These values have indicated that, there is a necessity of crop scientists for intervening to increase the yields in the TGP command by advocating suitable crop management practices. Ranking has been carried out for the existing canal commands. The Ranking list has been prepared from better performing canal commands to poor performing canal commands. Nellore district canal command was performing best (1st Rank), xx Kurnool, Chittoor and Kadapa district canal commands received 2nd, 3rd and 4th ranks respectively. High water supply and low command area was the reason for Kadapa district command. The linear and quadratic regression analysis was carried out for 22 years from 1997 to 2018.From this analysis, it can be found that, the significant influence of yield by canal water with R2values. The standard statistical analysis was done for optimal allocation of canal water for major crops grown in the study area. This procedure was useful for identifying the maximum yield for major crops like paddy, groundnut, sugarcane, jowar and cotton. The maximum paddy yield of 5440 Kg/ha was attained at mean canal water supply of 1768.3 Mcum. In groundnut maximum yield of 2195 Kg/ ha was attained at mean canal water supply of 1822.6 Mcum. The maximum sugarcane yield of 934 q/ha was attained at mean canal water supply of 1950.3 Mcum. In jowar maximum yield of 1488 Kg/ ha was attained at mean canal water supply of 1822.6 Mcum. In cotton maximum yield of 1356 Kg/ ha was attained at mean canal water supply of 1893.5 Mcum. The analysis was carried out for estimating the crop water demand and also, canal water effect in command area. This is useful for the impact of Telugu Ganga project command area on farmers. Because the selected command was on Rayalaseema upland area which is severely affected by drought continuous. So, the canal water supply regularly over the years, they can cultivate the remunerative crops. Though the study is conducted under selected irrigation commands, the approach and the experience would be useful for the extension of the same in several irrigation commands in Andhra Pradesh state. Key words: Telugu Ganga Project, Remote Sensing and GIS, Canal water, Irrigation potential, irrigation efficiencies, Performance Indicators and Crop Water demand
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    ThesisItemOpen Access
    ASSESSMENT OF IRRIGATION POTENTIAL AND OPTIMIZATION OF AVAILABLE WATER RESOURCES FOR SUSTAINABLE AGRICULTURE IN ANANTAPUR DISTRICT
    (guntur, 2022-08-18) ASHOKKUMAR, NARALASETTY; RAMANA, M. V.
    The present study entitled “Assessment of irrigation potential and optimization of available water resources for sustainable agriculture in Anantapur district” was conducted to identify probable drought hit areas, identify water bodies, estimate irrigation water requirement and to develop software for designing location specific water harvesting structures in Anantapur district. Cluster analysis was carried out for 63 mandals in the Anantapur district based on mean annual rainfall using SPSS 26 software. The Standard Precipitation Index (SPI) for 12 months values was estimated using "MDM" (Meteorological Drought Monitoring) software application to identify the drought affected mandals. The mandals viz., Madakasira (Cluster 1), Singanamala and Parigi (Cluster 2), Bukkapatnam (Cluster 3) Gummagatta (Cluster 4) and Bommanahal and Chenne Kothapalle (Cluster 5) were found to be most affected by drought. Monthly rainfall forecasting was carried out using seasonal autoregressive moving average (SARIMA) model by testing 267 combinations using SPSS 26 software. Based on the best SARIMA models, the maximum probable annual rainfall values were observed in Brahmasamudram (Cluster 1), Gandlapenta (Cluster 2), Kadiri (Cluster 3), Kambadur (Cluster 4) and D. Hirehal (Cluster 5) mandals of Anantapur district respectively. The area of the surface water bodies for pre-monsoon (May) and post-monsoon (November) seasons from 2006 to 2015 in Anantapur district were estimated using QGIS. The minimum and maximum area of the surface water bodies for pre-monsoon and post-monsoon seasons were 1081, 5236 and 3480, 9032 ha for the years 2009 and 2010 respectively. The highest and lowest percentage of change of area of surface water bodies in post monsoon were 221.9 and 48.1 per cent as compared to pre-monsoon season due to distribution of rainfall in Anantapur district. xviii The crop water requirements for five major crops viz., groundnut, sunflower, paddy, jowar and maize were computed. The highest crop water demand and available surface and ground water resources were observed to be 4805.2 and 1958.83 MCM respectively. By using LINGO 11.0 software, the current scenarios of irrigation vs cultivated area of the availability of water resources, the highest net benefits, show highest net benefits of Rs. 22363 crores for the year 2017 followed by Rs. 20610 crores for the year 2014 due to higher available surface and ground water resources compared to other years 2004, 2009, 2011. For higher available surface and ground water resources, highest net benefit crops may be grown. The potential scenarios of irrigation vs cultivated of availability of water resources, highest net benefits i.e., Rs.18,291 crores got in Scenario 1 as compared to other 6 scenarios. For the prediction of future scenarios, it was assumed to be available ground and surface water resources i.e., 195883 ha-m may be present in the future and also considering the minimum cultivation area for highest crop water demand crops like., Paddy and Sunflower reduced by 75, 50 and 25 per cent and got maximum net benefits of Rs. 23841, 23249 and 22856 crores respectively. Based on highest net benefits, the optimum values of irrigation potential areas for the major crops like., groundnut, sunflower, paddy, jowar and wheat crops were 590311.4, 1260.5, 4180.75, 12530 and 10824 ha respectively. Location specific farm pond design was developed for the benefit of line department officials like., Department of Agriculture, Horticulture and DRDA etc. Based on the mathematical formulae and these designs are developed in Visual basic13. Design can be used for rectangle/square, inverted cone based on requirement and storage capacity and cost estimation for local conditions very effectively and accurately. This software is easy to install and run-in windows 10 operating system and also user friendly. The construction cost of the farm pond, gross returns, net returns and benefit cost ratio of the fish farming were Rs. 99794, Rs. 33000, Rs. 11416 and 1.53 respectively. There is to encourage the local farmers to adopt this technology in drought prone areas of Anantapur district Key words: Irrigation potential, optimization of water resources, SPSS, LINGO, QGIS, MDM, Cluster, cultivated area and SARIMA
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    ThesisItemOpen Access
    EFFECT OF DRIP IRRIGATION AND FERTIGATION SCHEDULING ON SOIL MOISTURE AND NITROGEN DISTRIBUTION PATTERNS UNDER HIGH DENSITY PLANTING OF GUAVA (Psidium guajava L.)
    (guntur, 2022-08-18) CHENNAKESAVULU, B.; RAVI BABU, G.
    Water and land are two essential resources for agricultural growth and economic development of any country and shall not be considered as available in abundance and free forever. Due to increase in population, the requirement for these two resources shall continue to grow day by day. The key inputs which directly affect the plant growth and development, yield and quality of produce are irrigation and fertilizer. Application of irrigation water and fertilizers through drip irrigation system is the most effective way of supplying water and nutrients to the plants. The present experiment was conducted on guava crop with the variety of VNR bhihi to study the influence of frequency of nitrogen and irrigation management on the movement of nitrogen ions in the soil under the high density planting. The purpose of this study was to observe the water movement under four irrigation treatments and its role in nitrogen distribution under four fertigation frequencies and their effect on guava yield. Experiments were conducted at research farm of college of horticulture, Venkataramannagudem, West Godavari district of Andhra Pradesh to study the effect of different irrigation and fertigation levels on plant growth, yield, soil moisture and nitrogen distribution patterns of guava under high density planting system. The experiment was laid out in a Factorial Randomized Block Design (FRBD) with sixteen treatments and each replicated thrice. During crop growth period four levels of irrigation water (120 % of ETc, 100 % of ETc, 80 % of ETc and 60 % of ETc) and four levels of recommended dose of fertilizers (120 % of RDF, 100 % of RDF, 80 % of RDF and 60 % of RDF) were imposed. Soil samples were taken from different depths (both vertically (90 cm depth) and horizontally from the dripper to study the soil moisture and nitrogen distribution patterns during crop growth period. Soil sampling was done three times in the growing period (i.e. 30 days after pruning) vegetative stage, (90 days after pruning) mid stage and (150 days after pruning) harvesting stage during both the seasons of 2018-19. A finite element model Hydrus-2D was selected to simulate the water and nitrogen movement in the root zone. Simulations were done in axi-symmetrical polar coordinate system for the radius of 30 cm and depth of 90 cm. xviii Analysis of crop performance parameters (based on pooled data) revealed that treatment T5 (I2F1) gave 39% more yield compared to T16 (I4F4) treatment. Irrigation, fertigation and their interaction had significant effect on water use efficiency and nitrogen use efficiency. WUE was highest in T13 (I4F1) (224.93 kg ha-1 mm-1and 226.12 kg ha-1 mm-1) in first and second season respectively. NUE was found significantly higher in T8 (I2F4) treatment (128.77 and 130.00 kg kg-1) during first and second Seasons. The moisture distribution patterns 48 h after irrigation for different irrigation levels were at field capacity and soil is at saturation at emitter, 15 cm away from the emitter and 22.5 cm away from the emitter in horizontal plane. The analysis of results also revealed that the moisture content for I1 and I2 treatments in the top two soil layers were at field capacity and soil is at saturation at emitter, 15 cm away from the emitter and 22.5 cm away from the emitter in horizontal plane. However, there was a deficit in moisture content in the top soil layer also for I3 and I4 treatments. It was noticed that higher values of nitrogen concentration was found in top 30 cm soil profile in all the four levels of fertigation. This may be due to the presence of more ammonical nitrogen in this layer because of more moisture content. In the lower soil profiles lower nitrogen concentration were observed in all the four levels of fertigation treatments. Similar trend was also observed in T5 (I2F1) , T6 (I2 F2), T7(I2F3) and T8(I2F4) treatments respectively at 48 h after fertigation. The lowest nitrogen concentration was recorded in T8 treatment in the lower soil profiles. This may be due to lower (60 % of RDF) application of nitrogen in that particular treatment. The simulation results for soil water and nitrogen distribution by HYDRUS-2D model revealed that, there was a good agreement between observed data in the field experiment and predicted by model. The results provide support for using HYDRUS-2D as a tool for investigating and designing drip irrigation management practices The economic analysis was done for guava crop cultivation under drip irrigation. The highest benefit cost ratio (4.6 in season -1 and 5.8 in season -2) and lowest payback period (21 months in season -1 and 18 months in season-2) was found in treatment I2F1 during the crop period. Hence, I2F1 treatment may be more beneficial for the farmers. Key words: Drip irrigation, fertigation, HYDRUS-2D, soil moisture content, nitrogen content, benefit cost ratio.
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    ThesisItemOpen Access
    WATER RESOURCES PLANNING UNDER UNCERTAINTY OF WATER RELEASES FOR CROPS IN NSP (NAGARJUNA SAGAR PROJECT) RIGHT CANAL COMMAND, ANDHRA PRADESH
    (guntur, 2022-08-18) SAI GANGADHARA RAO, D.; HEMA KUMAR, H. V.
    Irrigation in agriculture plays a major role. Nagarjuna Sagar Project is built across river Krishna at Nandikonda village of Nalgonda District. The Project is having right main canal namely Jawahar canal. The Right main canal (Anonymous, 1999) has Guntur, Zulakallu, Bellarnkonda, Peddanandipadu, Addanki, Eddanapudi, Darsi, Pamidipadu and Ongole branch canals. Conjunctive use is the technique which envisages the use of groundwater in conjunction with canal water in the command area. The productivity is reduced due to irregular operation and maintenance of canals. Hence, this doctoral research entitled “Water Resources Planning under Uncertainty of Water Releases for Crops in NSP (Nagarjuna Sagar Project) Right Canal Command, Andhra Pradesh” is proposed to fulfil the following objectives. i) To assess the annual water resources in the NSP (Nagarjuna Sagar Project) Right Canal Command. ii) To analyse the canal flows of NSP (Nagarjuna Sagar Project) Right Canal Command using canal simulation models. iii) To analyze the deficit of water availability for the crops grown in the command area and iv) To develop location specific Decision Support System (DSS) for adopting the best water management strategies to maximize the production for Guntur branch canal of NSPRCC. Nagarjuna Sagar Right (Jawahar) Canal Command area is spreaded over 37 mandals in Guntur and 23 mandals in Prakasam districts. Surface water availability has been estimated from different sources namely water releases data obtained by Water Resources Department, Lingamguntla and Ongole Circles of Nagarjuna Sagar Right Canal (Jawahar) Command Area, Andhra Pradesh. Groundwater monitoring is being carried-out by continuous monitoring of 300 Observation wells in the command area comprising I to XXII Andhra Pradesh by the State Groundwater Department. NSPRCC flows were analyzed using the FlowPro2.1 version software at three different sections like head, middle and tail end of the main canal. The crop water requirements were estimated for all the crops grown in command area by CROPWAT model. The Decision XIX Support System (DSS) was designed and developed in visual basic. The software was a powerful tool for computing crop water demand, domestic water requirement and conjunctive use of water. The mean water releases at head section of 11 years of data was 128.13 TMC (3,627.71 MCM). Overall conveyance efficiency of the Nagarjuna right bank canal (all together evaporation losses and seepage losses etc.,) as 61.45% recommended by the CWC, Government of India and then total availability of the surface water is 2,229 MCM. For the efficient utilization of groundwater, the quality plays a major role in terms of selection of crop variety for sustainable agriculture. Finally, the ground available volume is 61% of total volume (i.e. 2270 MCM) of the command area as 1385 MCM. The computed values of velocity of flow at head, middle and tail sections of the main canal were 3.05 m/s, 0.85 m/s and 0.719 m/s and as per the design 3.048 m/s, 0.85 m/s and 0.814 m/s respectively. The variation in values is also not more than 11%. Hence, the flowpro2.1 software simulated discharges were compared with designed discharges, velocities and there is no much variation (only 10%) in flow. The crop water requirements for paddy, cotton, chilies, millet and pulses were computed. The crop water requirement for paddy in NSRC command area of Guntur district for black soils was 488.2 mm. The irrigation water requirement was 368.9 mm. Similarly, computed for all the crops and overall crop water demand for both districts of NSRC command area for different soils and different crops was 4,456 MCM, without considering cattle and domestic water use. Finally, the available water is not sufficient and choose other alternative crops for bringing entire area into cultivation. The decision support system was designed and developed in visual basic. The software was a powerful tool for computing crop water demand and domestic water requirement and conjunctive use of water. The DSS analyse data and computed values represented in graphical form. The maximum surface volume was observed in the year 2008-09 as 6051 MCM, minimum at 2015-16 as 490 MCM and the average surface water volume as 3628 MCM. The average groundwater volume noticed was 2269.89 MCM and maximum 3062.21 MCM in the year 2008-09 and minimum 1825.55 MCM in the year 2015-16. The cumulative crop water requirement calculated for all the seasons was 4455.32 MCM, Domestic water demand was 155.9 MCM, net surface water availability was 2,229.41 MCM, net groundwater availability was 1384.63 MCM and conjunctive use water was 3,614.04 MCM. The agricultural water demand and domestic water demand is more than the conjunctive use water. It is concluded that the developed DSS will help the policy makers and water resources planners for cropping pattern to be adopted to save the water in satisfying water demand of the other sectors also. The results obtained from the study can be used as a guide for the farmers for selecting the crops in view of availability of water. Key words: surface water, groundwater, conjunctive use, flowpro, cropwat, canal hydraulics, decision support system
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    ThesisItemOpen Access
    IMPACT OF CLIMATE CHANGE ON CROP WATER PRODUCTIVITY IN GODAVARI EASTERN DELTA
    (guntur, 2022-08-18) KISHORE KUMAR, G.; RAGHU BABU, M.
    Climate change has been considered to have calamitous effects on agriculture and global fresh water. Due to the alteration in climate, crop productivity is being affected adversely resulting in food and livelihood security issues. In view of climate changes, there is a need to increase agricultural water productivity for better management in view of less resources and demand. Proper water management is the only option that ensures a squeezed gap between the demand and supply. For proper planning and efficient utilization of the land and water resources it is necessary to understand the hydrological cycle and estimate the hydrological parameters. Rainfall is the major component of the hydrologic cycle and this is the primary source of runoff. Worldwide many attempts have been made to model and predict rainfall behavior using various empirical, statistical, numerical and deterministic techniques. They are still in research stage and needs more focused empirical approaches to estimate and predict rainfall accurately. This study investigated the Impact of Climate change on Crop Water Productivity using CROPWAT 8.0, AquaCrop, RS&GIS and statistical tools used for climate data. Estimation of mean rainfall over Godavari eastern delta of Andhra pradesh and mandals in the delta has been done using different deterministic methods. Weathercock and Mann-Kendall software were used to compute Rainfall variability and trend analysis on time series data for 30 years period from 1987 to 2016 collected at local stations and departments. Godavari eastern delta comprises of around 15 mandals and the same being considered for the present study. The normal rainfall of the area is 1197 mm. Crop land occupying 70% of the area of Godavari eastern delta. Different thematic maps for the study area have been developed for water resources assessment and for the runoff estimation using SCS-CN. Runoff generated through rainfall with the help of RS&GIS softwares, it is very important in various activities of water management. Results indicated that over 30 years of rainfall-runoff 1996 year showing highest 34.79 % runoff following 2006 with 34.13%. NDVI was derived to observe the change in land productivity for 2011-12 and 2016-17 years using RS&GIS techniques. Vegetation has a distinctive spectral signature that is characterized by low reflectance in visible region of solar optical spectrum as xvi well as high reflectance in infrared (IR) spectrums. The combination of these two spectral regions allows classification of vegetation. In this normalized difference vegetation index (NDVI), Where NIR is the reflectance in near infrared band and R is the reflectance in red band of satellite data. NDVI indicates the vigor of vegetation. Higher NDVI indicates higher amount of green vegetation on ground. NDVI of non-vegetation classes are generally lower than vegetation classes. Vegetation was influenced by time due to land usable changes. There was nearly 11% of change in kharif and whereas it was 30% change in rabi season. Estimation of crop water productivity of rice for prime rice-producing region using CROPWAT and AquaCrop model using soil, climate, crop data and management details. With the help of relatively few conservative crop parameters, AquaCrop simulates final crop yield. The results (WP) for the different years and the different mandals in the study area were varied from 0.75 kg/m3 in 1987-88 to 1.17 kg/m3 in 2016-17 for rabi season. In kharif water productivity is varied from 0.46 kg/m3 in 1990-91 to 0.86 kg/m3 in 2016-17. The average water productivity for 30 years in the study area is 0.68 kg/m3 in kharif and 0.98 kg/m3 in rabi season. WP is higher for the rabi (dry) season than for the kharif (monsoon) season. This is may be due to poor irrigation management practices such as inundation, waterlogging and less sunlight due to cloudiness in crop growth stage. Crop water productivity is highly depending upon weather; therefore, future climate change could affect productivity. Conclusively, CROPWAT 8.0 and AquaCrop models may be used to estimate crop water productivity, water requirements for different cultivars in different climatic conditions to ascertain their minimum water requirements for maximum yields. Thus, further study in Crop water productivity should be carried it out. Key words: Water Productivity, Rainfall-Runoff, CROPWAT, AquaCrop, NDVI, RS&GIS