Afield experiment was conducted during rainy season of 2013 at Agricultural Research Farm, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi to evaluate the effect of phosphorus levels and bio-organic sources on growth and yield of wetland rice cv. HUR-105. Factorial experiment was laid out in Randomized Complete Block Design involving four levels of phosphorus viz. , control, 50 per cent RDP, 75 per cent RDP and 100 per cent RDP and three bio-organic sources i.e. PSB, PSB + BGA and PSB + BGA + FYM (5 t ha ?1 ) replicated thrice. Increase in the levels of phosphorus application upto 100 per cent RDP (60 kg P 2 O 5 ha ?1 ) improved growth attributes, yield attributes, grain and straw yields. Combined use of PSB + BGA + FYM (5 t ha 1 ) proved superior to PSB alone and PSB + BGA. Economic analysis indicated that integration of moderate phosphorus level (75% RDP i.e. 45 kg ha ?1 ) along with the use of PSB + BGA + FYM (5 t ha ?1 ) gave highest net return and B:C ratio.
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