Production potential of sorghum (Sorghum bicolor) intercropped with pigeonpea (Cajanus cajan) under varying fertility levels in the rainfed environment of Bundelkhand region

摘要

A field experiment was conducted during rainy seasons of 2004-05 and 2005-06 at Agriculture Research Farm, Nehru P.G. College, Lalitpur (U.P.) in sandy loam soil, to find out optimum NPK fertilizer requirement of sorghum + pigeonpea intercropping system. The seed yield of intercrop sorghum was significantly superior at sorghum with 75% NPK + pigeonpea with RDF (1.76 t/ha). Plant height, length and width/panicle, seeds/ panicle of intercrop sorghum were also distinctly higher with these treatment combinations. Sorghum equivalent yield was 108.13% higher at sorghum 75% NPK + pigeonpea RDF over sole sorghum at RDF with LER value of 1.80. Protein content of sorghum seed did not significantly vary due to intercropping system. However, N,P,K uptake was 5.32, 16.36 and 14.22 % higher with sorghum + pigeonpea at sorghum 75% NPK + pigeonpea RDF over sole sorghum at RDF.