Effect of Incorporation of Green Leaves of Local Tree Species on Castor and their Residual Effects on Pearl Millet under Rainfed Conditions

摘要

The effects of recycling of green leaves as organic sources on loamy sand soil (Typic ustipsamments) were evaluated at Sardarkrushinagar during kharif season from 2001 to 2010 in a Randomized Block Design (RBD) with ten treatments comprising inorganic(60 kg N ha~(-1)) and green leaves of ardu, neem, glyricidia and FYM as organic sources. Each organic source was applied to provide 30 kg N ha~(-1) (50% RDN) and 15 kg N ha~(-1)(25% RDN) as per treatment. The succeeding pearl millet crop was sown with the recommended dose of chemical fertilizers. The castor yield was highest with the application of 50% recommended dose of nitrogen through urea and 50% nitrogen through FYM along with azotobacter, which was to the tune of 26% higher than 100% recommendeddose of fertilizer through urea and at par with different combined treatments of chemical fertilizers and green leaves of trees. The residual effect of the 50% RDN + 50% N through green leaves of glyricidia recorded higher seed yield of pearl millet crop and was equally effective with the incorporation of green leaves of other local trees. The responses on castor equivalent yield were non-significant. The soil organic carbon and available plant nutrients were increased due to incorporation of green leaves of trees and FYM which improved the soil health.