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C.V. KARUNAKARA REDDY, Y. REDDI RAMU*, G. KRISHNA REDDY, P. SUDHAKAR AND G. PRABHAKARA REDDY
Department of Agronomy, S.V. Agricultural College, Tirupati, Andhra Pradesh – 517 502
A field experiment was conducted during rabi, 2013 at dryland Farm of S.V Agricultural College, Tirupati, Andhra Pradesh, to identify the optimum sowing time and dose of phosphorus for seed production in Dhaincha. The highest seed yield of Dhaincha was recorded with crop sown during first fortnight of November, which was significantly superior to that of either second fortnight of October or November sowings, while the lowest seed yield was registered with the crop sown during December first fortnight. Application of 45 kg P2O5 ha-1 has recorded the highest seed yield over the other Phosphorus levels tried. With respect to interaction sowing of Dhaincha during first fortnight of November with application of 45 kg P2O5 ha-1 has recorded the highest seed yield of Dhaincha, which was significantly superior over the rest of the treatment combinations. The lowest seed yield was recorded with sowing of Dhaincha during first fortnight of December with out application of phosphorus. Dhaincha sown during first fortnight of November, at all the four phosphorous levels recorded the maximum gross returns, net returns and returns per rupee of expenditure over the rest of the sowing dates.
Dhaincha, Economics, Phosphorus, Time of sowing, Yield.