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Birsa Agricultural University, Ranchi

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Subject: Agricultural Meteorology × End date: 2023 × Start date: 2023 × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    SOIL AND RAINFALL BASED CROP PLANNING OF DHANBAD DISTRICT IN JHARKHAND
    (Birsa Agricultural University, Ranchi, 2023) Chandan Kumar Mandal; Ramesh Kumar
    n have adverse effect on agricultural production. Jharkhand is located in the eastern region of India and agriculture is the mainstay for the people. The primary source of irrigation for agricultural production in most parts of Jharkhand is rainfall. Therefore, the temporal and spatial distribution of rainfall plays a vital role in the agriculture activities. keeping these facts in view the present study was undertaken for crop planning based on soil and rainfall characteristics of Dhanbad district in Jharkhand. Soil samples collected from 10 blocks of Dhanbad at a depth 0-30cm were analyzed for various physical properties (viz. soil texture, bulk density, field capacity, permanent wilting point, available water capacity) and chemical properties (pH, organic carbon, available N, P and K). Daily rainfall data for 20 years (2002-2021) collected for all blocks of Dhanbad district were analyzed for weekly, monthly, seasonal and annual distribution and other, viz. meteorological drought, initial and conditional probabilities, agricultural drought, and incomplete gamma probability, were computed using software (Weather Cock v1.0) developed by the coordinating unit of AICRP on Agrometeorology, CRIDA, Hyderabad. The soils were nearly coarse in texture, mostly sandy loam in all of the blocks were observed. Bulk density and other soil moisture retention parameters (FC, PWP and Avl. water) followed the trend of mechanical separates and the textural class. Wide fluctuations in soil reaction were observed among the blocks. It varied from highly acidic (4.6) to neutral (7.7) in the blocks of Dhanbad. Fertility level in terms of organic carbon was in low to medium (1.7- 7.3 g kg-1 ), available N from low to medium (125 - 470 kg ha-1 ), available P from low to high (4.3-27.3 kg ha-1 ), and available K from low to medium (53.7 to 275.3 kg ha-1 ) was observed in all the block. Annual and Monsoonal rainfall showed an increasing trend ranging from 1.7 to 24.9 mm yr-1 and 0.4 to 18.9 mm yr-1 in most of the blocks, respectively. Among the seasons, monsoon received maximum rain 82.7 per cent, and only 17.3 per cent of rain was received in the remaining three seasons (post monsoon, winter & summer). Rainfall variability in (CV%) was noticed maximum in rabi season (172.9-237.9 %) than in Kharif (48.1-73.2 %). Initial and conditional probability in terms of P(W) and P(W/W) above 0.5 level for 20 mm rain has been observed from 25 to 39 SMW in most of the blocks. The 50 mm limit has been observed from 26-34 SMW in Topchachi and Govindpur whereas rest of the blocks have a limit of 27-38 SWM. The meteorological drought severity was analyzed for all 10 blocks indicated that Purvi tundi faced only 2 years of severe drought while other blocks had 1 year of severe drought. Moderate drought was observed maximum of 6 years in Tundi block, while (1-5 years) moderate drought was observed in the rest of the blocks. Between 13 to 18 years, no drought was observed in any of the blocks. Early (22-28 SMW), middle (29-35 SMW) and late (36-42 SMW) season agricultural drought was observed maximum in Baghmara (i.e., 12 years), Tundi and Purvi tundi (11 years) and Egarkund (10 years). The remaining blocks were experienced early, middle, and late agricultural drought (6 to 9 years). Early and late season agricultural drought was seen in all blocks of Dhanbad district. Gamma distribution of rainfall at five levels (90, 75, 50, 20 & 10 %) clearly indicated that annual rain is close to 50 percent probability in all blocks of Dhanbad. Crop growing environments in terms of soil characteristics and weather variables were analyzed separately for all 10 blocks. Planning of crops with suitable varieties was identified for normal, early, mid and late drought conditions based on rainfall characteristics, temperature, humidity, and soil parameters for kharif and early rabi season crops. Crop planning were classified according to early, mid and late drought conditions in each land situations (i e., upland, medium land & lowland). In the upland and medium land crops like Pigeon pea, Maize, Black gram, Green gram, Sesame, Horse gram, Cowpea, Dolichos bean, Brinjal, Chilli, Okra, Radish, have been suggested to grow as a sole or with intercropping. In the lowland situation majorly rice cultivation were suggested.
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    ThesisItemOpen Access
    IMPACT OF WEATHER VARIABLES ON GROWTH AND YIELD OF CHICKPEA UNDER AGROCLIMATIC CONDITION OF RANCHI
    (Birsa Agricultural University, Ranchi, 2023) Bipin Sanjay; Pragyan Kumai
    Weather parameters impact crop growth and productivity, with each phenological stage having its own optimal conditions. Understanding these relationships is crucial for sustainable production and productivity, requiring agro-climatological knowledge of individual crops and locations. Agricultural production and productivity of any region is regulated by the prevailing weather and derived agrometeorologicial indices of that area through temperature, Rainfall, Light intensity, Radiation, Sunshine duration and their derived indices such as GDD, HTU and PTU etc. Sowing dates significantly impact chickpea yield, making optimal timing crucial for optimal environmental conditions. Delays in sowing reduce growth period, maturity, and yield. A field experiment entitled was conducted at experimental field at Birsa agricultural university research field. The treatment consist three growing environment viz. 10 November, 25 November, 10 December and 3 varieties viz. JG-14 GNG-1581 Birsa chana 3 were laid out in factorial randomized block design with 3 replications. During the entire crop growing period (45-18th SMW) weather condition. Tmax ranged between 21-39.2°C and Tmin ranged between 3·6-26.4°C with Relative humidity (RH) value of RH1 between 84-88% and RH2 between 68-70%. While the BSS ranged between 0-9.5 hrs/day. Wind speed was 2.5 km/hr having total rainfall of 130.4 mm. The result revealed that days taken for emergence was 11-12 days for Early and normal data and 15-16 days for late sown condition. The duration for attaining different phenophase curtailed to have shorter duration with delay in sowing. Birsa chana 3 has longest duration in all 3 dates of sowing 133, 125 & 116 days with GNG-1581 second least at 131, 124 & 114 days while shortest in JG 14 128, 120 & 110 days to attain physiological maturity. Accumulated growing degree days (GDD) was highest in early sown crop and decreased with delay in sowing. Similarly, the accumulated Helio Thermal Unit (HTU) and Photo Thermal Unit (PTU) were made in early sown crops and decreased in delayed sowing condition. GDD, HTU and PTU accumulated by GNG-1581 and Birsa chana 3 were at par with each other while JG-14 has significantly less accumulation. Among the different dates of sowing normal date of sowing achieved greater plant height with no. of branches having higher total dry weight in gms and consisting of maximum numbers of pods. Normal sown variety has the highest yield of 22.05 q/ha with harvest index (HI) of 51% and among varieties GNG-1581 has the yield of 21.92 q/ha with harvest index (HI) of 53%. Higher values of Heat use efficiency (HUE) and Radiation use efficiency (RUE) were obtained under normal sown conditions which showed a decline in early and late sown condition among varieties GNG-1581 has highest HUE and RUE (1.6 kg/ha ℃ days & 1.3 kg/ha/MJ) respectively.
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    ThesisItemOpen Access
    Assessment of Weather variables on Growth and Yield of Rice under Ranchi region.
    (Birsa Agricultural University, Ranchi, 2023) Shilpi Carol Kujur; Pragyan Kumari
    Agriculture is an integral part of human life. The vulnerability of production and productivity to weather and climatic changes demands usage of improved technologies and crop varieties. Both weather and climate play a lead role in the prevailing environmental conditions, livelihood and socio-economic conditions of a place. Constantly increasing population and shrinking of cultivable land along with increasing weather variability requires the study of various possible methods to obtain maximum yield of crops. The growth and development of crops depend on the combined effect of the genetic composition of crops as well as the prevailing abiotic environmental factors. Crop phenology and its association with weather parameters is a crucial aspect to determine the yield and yield attributes of crop. Phenological development is the most important attribute involved in crop adaptation to varied growing environments. Both, the season length and the relative duration of key phenophases, are critical determinants of grain yield in field crops. The study of agrometeorological indices helps to determine the phenophases of the crop and predict the duration of the same. This in turn establishes a better concept in decision making for selection of appropriate varieties of crops according to the prevailing climatic condition. Field experiments were carried out in kharif season during the year 2022 to study the influence of weather parameters on growth and yield of rice and to determine the suitable variety accordingly. Mean maximum temperature of 32.9°C and mean minimum temperature of 23.2°C was recorded during the entire crop growth period (23rd SMW to 45th SMW). A long dry spell with intermittent rainfall was noticed during the month of June and mid-July. The phenophasic duration was longest in early sown crops and among the three different genotypes, Naveen required the longest duration (125 days) to attain its phenological maturity. Accumulated growing degree days (GDD) during physiological maturity was highest in early sown crop and decreased gradually with delay in sowing. Similarly, the accumulated Heliothermal units (HTU) and Photothermal units (PTU) were maximum in the early sown crops and decreased in delayed sowing condition. Among varieties, Naveen accumulated highest GDD, HTU and PTU followed by MTU 1010 and Sahbhagidhan, respectively. Normal sown crops received the highest amount of rainfall (1770.2 mm. to 1776.2 mm.) during their entire crop growth duration, followed by late sown crops (1693.2 mm. to 1770.2 mm.) and early sown crops (1707.4 mm.), respectively. Previous 5 years’ data (2017 to 2022) was used to analyse the correlation of yield and weather parameters during the different phenophases of rice. In Sahbhagidhan, sunshine hours were significantly and positively correlated (r=0.70) during the sowingvegetative phase and significantly negative correlation (r=-0.55) was observed during the vegetative to flowering stage. In the genotype Naveen, rainfall showed significant negative correlation (r=-0.49) during the vegetative-flowering stage and significant positive correlation (r=0.47) during the grain filling-maturity stage. Sunshine hours showed significant negative correlation (r=-0.55) during vegetative-flowering stage in Naveen. MTU 1010 showed significant positive correlation (r=0.47) during the flowering-milking stage. Date of sowing exerted a significant effect on effective tillers per meter square, fertile grains per ear, test weight, total dry matter, grain yield and harvest index of rice. Highest mean yield (44.59 q/ha) was obtained under normal sown condition whereas among varieties, Naveen produced the highest mean yield (44.65 q/ha). Higher values of heat use efficiency (HUE) and radiation use efficiency (RUE) were obtained under normal sown conditions which showed a decline in early and late sown condition. Among genotypes, Naveen recorded highest HUE in normal (2.3 kg/ha/°C) and late sown condition (2.0kg/ha/°C). Similarly, Naveen recorded higher RUE in normal (2.6 g/MJ) and early sown (2.1 g/MJ) condition.
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    ThesisItemOpen Access
    SOIL AND RAINFALL CHARACTERIZATION FOR SUITABLE CROP PLANNING OF CUTTACK DISTRICT IN ODISHA
    (2023) Satya Pragyan Kar; Ramesh Kumar
    Indian agriculture is mostly rainfed, which is distress prone and climate- vulnerable to an extent of about 60 percent. Rainfall is the first and foremost climatic parameter which primarily affects crop yield in rainfed agriculture. The unpredictability of monsoonal rainfall significantly influences agricultural productivity. The beginning, end, and duration of the growing season, as well as the patterns of dry and wet periods during the season, are thus important details for agricultural crop planning. Agriculture in Odisha is reliant on the start of the monsoon and the distribution of rainfall during the crop-growing season. The agricultural planning used in the rainfed region are therefore governed by its quantity and spatial variability of rainfall. Taking these facts into consideration, the current study was conducted to plan the crop for the Cuttack district of Odisha based on the characteristics of the soil and rainfall. Three to four Soil samples collected from fourteen blocks of Cuttack district from 0-30 cm depth were analyzed for various physico-chemical properties (viz. soil texture, bulk density, field capacity, permanent wilting point, available water capacity) and chemical properties (pH, organic carbon, available N, P and K). Daily rainfall data for 34 years (1988-2021) of 14 blocks of district collected from Cuttack were analyzed for weekly, monthly, seasonal and annual distribution and other analyses, viz. meteorological drought, initial and conditional probabilities, Agricultural drought, and Incomplete gamma probability, were computed using software (Weathercock v1.0) developed by the coordinating unit of AICRP on Agrometeorology, CRIDA, Hyderabad. The soils were nearly coarse in texture i.e, sandy clay loam to sandy loam in most of the blocks. Bulk density and other soil moisture retention parameters (FC, PWP and Av. water) followed the trend of mechanical separates and the textural class. Almost uniform soil reaction were observed among the blocks. It varied from slightly acidic (6.3) to slightly alkaline (7.9) in the blocks of Cuttack. Fertility level in terms of organic matter was in low to medium (3.1- 6.4 g kg-1), available N from low to medium (209 - 432 kg ha-1), available P from low to high (4.2-147.5 kg ha-1) range, and available K from 140.0 to 431.6 kg ha-1 (i.e. medium to high) was noticed in all the blocks. Annual and Monsoonal rainfall showed a increasing trend ranging from 3.32 to 34.8 mm yr-1 and 1.10 to 26.5 mm yr-1 in 9 out of 14 blocks respectively. Among the seasons, monsoon received maximum rain (76.1 %), and only 23.9 percent of rain was received in the remaining three seasons (post monsoon, winter & summer). Rainfall variability in CV% was noticed maximum in rabi season (126.9-176.4 %) than in Kharif (45.3-60.6 %). Initial and conditional probability in terms of P(W) and P(W/W) above 0.5 level for 20 mm rain has been observed from 24 to 40 SMW in most blocks. The 50 mm limit has been observed from 29-37 SMW in Cuttack Sadar, Salepur, Tangi Choudwar and the rest of the blocks have a limit of 25-38 SWM. The meteorological drought severity was analyzed for all fourteen blocks indicated that Kantapada, Niali and Nischintakoili faced only two year of severe drought while some other blocks had one year of severe drought. Moderate drought was observed maximum of 8 years in Banki and Damapada, while (2-6 years) moderate drought was observed in the rest of the blocks. During the period, no drought was observed between 26 to 31 years in the blocks. Early (22-28 SMW), middle (29-35 SMW) and late (36-42 SMW) season agricultural drought was observed maximum in Narasinghpur (i.e. 50 %), Salepur (47 %) and Kantapada and Banki-Damapada (41 %). The rest of the blocks have (18-38%) early, middle, and late agricultural drought. Mid and late season agricultural drought was noticed in all the blocks of the Cuttack district. Gamma distribution of rainfall at five levels (90, 75, 50, 20 & 10 %) clearly indicated that annual rain is close to 50 percent probability in all blocks of Cuttack. Crop growing environments in terms of soil characteristics and weather variables were analyzed separately for all fourteen blocks. Planning of crops with suitable varieties was identified for normal, early, mid and late drought conditions based on rainfall characteristics, temperature, humidity, and soil parameters for kharif and early season rabi crops. Under the crop plan, besides the improved and hybrid rice varieties, some local and promising varieties have also been incorporated as the farmers are well satisfied with the varieties. Some crops like fodder crops (Mesta, roselle, rice bean and cowpea) have also been incorporated in some blocks depending upon the farmers' choices. Under drought condition short duration varieties like Hira, Jaladidhan, Anjali, Vandana, Sneha of rice, Jute, Pigeonpea, Blackgram, Greengram, Sesame, Horsegram, Niger, Brinjal, Okra, Radish, Cabbage and Cauliflower have been suggested to grow as a sole crop or in combinations as intercrop. As there are 10 to 12 % rainfall found in rabi and summer season, we can go for a crop planning for cuttack district. In rabi season, mostly vegetable crops like onion, tomato, brinjal, cucurbits, cauliflower, potato, chilli etc. can be grown with some major rabi season cereal and oilseeds crops (wheat, maize, mustard). Similarly, watermelon, muskmelon and cucumber can be grown in summer season in all the blocks of cuttack district.