Carryover Effect of Biochar and Cow Dung Manure on the Productivity of Green Gram (Vigna radiata L.) in Typic haplustalf

Background: In cereals based legume cropping system more importance and intensification are given to first crop (cereals) as compared succeeding crops. Hence, crops yield got reduced due grown in low fertile soils. Productivity of green gram have declined or stagnated recent years though we grew high varieties, marginal lands with nutrient moisture. Biochar is organic substance that highly persists soils very little biological decomposition helps store nutrients moisture for crop. The present investigation was felt necessary get utilize the residual soil from preceding biochar applied upland rice field sustainable Methods: conducted during kharif season 2018. study randomized black design sixteen treatments consisting four levels coconut shell (CSB) at 2, 4, 6 8 t ha-1 two cow dung manure (CDM) 5 10 alone combinations three replications (applied previous crop). recommended dose NPK fertilizer (20:50:50 kg ha-1) common except absolute control. Result: results indicated that, effect previously had a significant on productivity acid sandy loam its liming improving properties availability. Especially, combination (CSB (CDM fertilizers.