Direct and residual effect of organic and chemical sources of nutrients on fodder sorghum-fodder oat cropping sequence

摘要

Field experiments were carried out at Mountain Livestock Research Institute (MLRI), Manasbal, Sher-e-Kaslimir University of Agricultural Sciences and Technology Kashmir, India to study the direct and residual effect of different rates of organic and chemical sources of nutrients on fodder sorghum-fodder oat cropping sequence during Kharif200$, 2009 and rabi 2008-09,2009-10. Application of FYM @ 25tonnes recorded higher green fodder yield of sorghum than rest of treatments. The physical optimum dose of direct+residual effect of FYM on fodder sorghum-fodder oat sequence was 25.491 ha"1 and economic optimum dose 12.63 t ha1. Applying 120, 80 and 30 (N, P2Os K^O kg ha1) was found superior in green fodder yield than rest of treatments. However, physicaloptimum dose due to direct +residual effect of N, P205 and K,0 on fodder sorghum-fodder oat was 134.19 ,67.07 and 33.54 kg ha"1 and mean total economic optimum dose was found to be 128.0, 64.19 and 32.62 NPK kg ha1 respectively.