Figure 1

Single effect of N, P, and K fertilizers on yield and yield components. The vertical axes represent the yield, number of pods per plant, number of seeds per pod and 100-seed weight; the lateral axis interval represents fertilizer levels; and the series represents the N, P, and K fertilizers. (a) Single effects of N, P, and K fertilizers on yield. (b) Single effect of N, P, and K fertilizers on the number of pods per plant (c) Single effects of N, P, and K fertilizers on the number of seeds per pod. (d) Single effect of N, P, and K fertilizers on 100-seed weight.