highly significantP < 0.01
Results Effects of different combinations of N, P, and K fertilizers on yield and yield components Differences in the results for each year were not significant; however, the yield in treatments 5 and 14 was significantly ( P < 0.05 ) lower than that in the other treatments, and the yield in treatments 4, 11, 13 and 6–9 was highly significant ( P < 0.01 ) lower than that in the other treatments.