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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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Subject: Soil and Water Engineering × Author: CHENNAKESAVULU, B. × End date: 2022 × Start date: 2022 × Type: Thesis ×
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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.