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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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  • ThesisItemOpen Access
    (guntur, 2022-08-17) AJAY, Er. ARIGELA; RAMIREDDY, K. V. S.
    Maize (Zea mays L) is among the most suitable crop and more extensive versatility under different agro-climatic conditions. Maize is the world’s important cereal crop with the highest production and productivity next to rice and wheat. Globally, maize is recognized as the queen of cereals for the reason that it has a greater heredity yield potential compared to other cereals. The Latin American countries first adopted and cultivated maize and the Portuguese first introduced it in India during the 17th century. In addition to food and feed, maize needs significant in the production of different products in different industries. More than 35% of world maize is produced by the United States (USDA,2016). China, Brazil, Mexico, Argentina, and India are other major countries that are producing maize. After rice and wheat, maize is the third significant crop in India. In India maize is cultivated throughout the year and represents about 10% of overall food grain production. Karnataka stands first in the production of maize16% followed by Telangana and Bihar which together produces 20% and Andhra Pradesh produces 8% of India’s total maize production. Approximately 85% of maize is produced in India during the Kharif season (farmer.gov.in). Maize can be grown effectively in various soils that are loamy sand to clay loam and soils with excellent natural organic matter. However, maize from germination to flowering requires considerable moisture and temperature. Maize can be grown in the Kharif and Rabi seasons. Maize seed is sown by different methods i.e., seed dropping behind a plough, dibbling, zero till drill planting, ridge planting and furrow planting. The most labour intensive operations in maize cultivation are sowing, thinning, weeding and harvesting which are currently conducted manually. An alternate approach in maize seed sowing is twin-row planters. Some researchers studied the conventional and twin-row spacing methods and concluded that the spacing of twin-row leads to an increase in the mean maize yield and better growth than the conventional spacing. Maize that planted by using twin-row maize planter gives more equidistance and staggered plant spacing. Twin rows offer better PAR (Photosynthetically Active Radiation), which increases better crop and root growth due to better photosynthesis. Furthermore, a quicker canopy leads to fewer weeds and the humidity in the soil conserved. xii The experimental study was conducted with Development and evaluation of twin-row maize planter which was carried out at Dr. NTR College of Agricultural Engineering, Baptla. The physical properties of seeds were calculated initially. The mean values of seed length, width, thickness, sphericity, geometric mean diameter, surface area, bulk density, coefficient of static friction, angle of repose and thousand kernel weight were 11.00 mm, 7.75 mm, 4.58 mm, 0.65, 7.09 mm, 158.14 mm2,746.4 kg m-3, 0.60, 28.170 and 0.23 kg, respectively.Two seed metering mechanisms namely roller type and cup type metering were selected and suitable seed boxes for each metering mechanism were developed and the two metering mechanisms were evaluated in the laboratory. From obtaining results from the laboratory the effective metering mechanism was selected for twin-row maize planter. From laboratory results seed to seed spacing with cup type metering was 9.5, 14, 14.2, and 16 cm and with roller type metering system it was 11, 14, 19.8and 20 cm at 10, 15, 20, and 25 rpm belt operational speed respectively. Missing index was 11.1 to 17.1% for cup type system and 2.28 to 15.29% for roller type metering unit at belt operational speed of 10, 15, 20, and 25 rpm. Seed multiple index with roller type metering unit was 22.2 to 8.89% and with cup type metering system was 24 to 13.33% at 10, 15, 20, and 25 rpm speed of operation, respectively. Based on the laboratory results roller type metering was selected. The spacing between twin-rows was 20 cm. Results obtained from actual field conditions the average seed spacing with roller type metering mechanism was 17.8, 19.1, and 20 cm at operating speed of 1.5, 2, and 2.5 kmh-1 respectively. The acceptable seed spacing occurred at operating speed of 2.5 kmh-1. Seed missing index was 10.44 to 27% with an operational speed of 1.5 to 2.5 kmh-1. Field efficiency of developed twin-row planter at 1.5, 2, and 2.5 kmh-1 speed of operation was 76.9, 88.8, and 87%, respectively. Wheel slip of the developed twin-row maize planter was 1.2 and 5.8% with a depth of 6, 8cm respectively. Operational cost for developed planter was Rs. 1910.77 ha-1. Key words: Roller type metering mechanism, cup type metering device, twin-rows, PAR, seed missing index, seed multiple index and field efficiency.