Fig 2.

Changes in net photosynthetic rate (3, 10, 17, 24, and 31 days after anthesis (DAA)) during grain-filling period during in the early (A) and late growing season (B) under combined organic and inorganic N fertilizer application. Vertical bars represent the standard error of the mean. Different letters above the column indicate significance at the (P < 0.05). Note. Pn—net photosynthetic rate, CF—chemical fertilizer, CM—cattle manure, PM—poultry manure. The treatment coding details already showed in the above figure. The mean comparison was made using Tukey tests for treatments mean in both seasons and the lettering was done on basis of Tuky HSD test at 5% using simple effect. ns = non-significant; *, ** = significant at 5% and ** at 1%, respectively.