Abstract
A field experiment was carried out under irrigated condition on fixed site during 1986-2001 at Dryland Farm- ing Research Station, Arjia, Bhilwara, Rajasthan, to find out the effect of integrated nutrient supply system in maize (Zea mays L.)-Indian mustard [Brassica juncea (L.) Czernj. & Cosson] cropping system. The highest mus- tard-equivalent yield (24.88 qlha) was recorded with the application of 100% recommended N in the rainy sea- son through FYM and 100% recommended NP in the winter season through inorganic fertilizers. Maximum net monetary returns (Rs 15,537/ha), benefit : cost ratio (2.07) and agronomic efficiency (16.1) were obtained from the treatment consisting of 50 and 100% recormmended NP through fertilizers to maize and mustard respec- tively. Amount of available phosphorus increased over initial value when organic manures and crop residues were incorporated. Organic carbon status declined in the control, while there was build up in organic source-in- corporated plots.
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