EFFECT OF VARIOUS NUTRIENT SOURCES ON YIELD, YIELD ATTRIBUTES AND ECONOMICS OF GROUNDNUT (Arachis hypogaea L.) UNDER RAINFED AND PROTECTIVE IRRIGATED CONDITIONS
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Authors
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G. NARAYANA SWAMY*, A.V. NAGAVANI, K. C. NATARAJ, Y. REDDI RAMU and S. N. MALLESWARI
Department of Agronomy, S.V. Agricultural College, Acharya N. G. Ranga Agricultural University, Tirupati- 517 502
Abstract
The experiment was conducted during two consecutive Kharif seasons of 2014 and 2015 in groundnut.The
highest level of yield attributes viz., number of filled pods plant-1, 100 pod weight, 100 kernel weight, shelling percentage,
the lowest number of ill-filled pods plant-1, pod and haulm yield were recorded with the supply of 100 percent of N
through sheep penning and found comparable with 50 per cent nitrogen through urea + 50 per cent nitrogen through
FYM and recommended dose of fertilizer under rainfed situation. Whereas, under protective irrigation, which was
inturn comparable with supply of 50 per cent nitrogen through urea + 50 per cent nitrogen through leaf compost. The
highest gross returns and net returns in groundnut were obtained with supply of 100 per cent of N through sheep
penning, which was at par with 50 per cent nitrogen through urea + 50 per cent nitrogen through FYM in both the
situations during two consecutive years of investigation. The highest benefit-cost ratio was registered with supply of
100 per cent N through sheep penning, which was, however comparable with recommended dose of fertilizer under
both situations except during second year under protective irrigation, where it was significantly superior over rest of the
nutrient management practices tried.
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