Figure 5

Response of carbon (C) input into the soil in terms of above ground biomass yield (grain + straw), under different nutrient management. O = no fertilizer, F = 100% inorganic fertilizers, LE = opportunity legume crop (Vigna radiata), GM = green manuring, FYM = farmyard manure, WS = wheat stubble, RS = rice stubble. Horizontal error bars denote ± 1 SD for C input into the soil and vertical error bars denote ± 1 SD for yield.