Relationship between (a-e) sowing time and 1000-grain weight (g), and (f-j) sowing time and number of grains spike-1 during 2011-12 to 2013-14. Coefficients of determination (R2), significance of coefficients (P < 0.05) and dependence of (a-e) 1000-grain weight (y) and (f-g) number of grains spike-1 (y) on sowing time (x) are given (n = 4).