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Table 4

Influence of irrigation regimes on number of grains per spike, 1,000-grain weight, grain yield, biological yield and harvest index

TreatmentsGrains per spike
1,000 Grain weight (g)
Grain yield (kg ha−1)
Biological yield (kg ha−1)
Harvest index (%)
2015–162016–17Mean2015–162016–17Mean2015–162016–17Mean2015–162016–17Mean2015–162016–17Mean
I1 43.3 42.7 43.0A 41.8 41.5 41.6B 3,511 3,493 3502B 12,284 12,272 12,278B 28.58 28.46 28.52B 
I2 42.6 41.7 42.1A 44.5 44.2 44.3A 3,881 3,885 3883A 12,900 12,916 12,908A 30.09 30.08 30.08A 
I3 40.2 41.7 40.9B 37.5 37.2 37.4C 3,177 3,164 3171C 12,103 12,099 12,101C 26.25 26.15 26.20C 
I4 37.7 36.3 37.0C 35.6 35.3 35.5D 2,806 2,792 2799D 11,349 11,329 11,339D 24.72 24.65 24.68D 
Mean 41.0 40.6  39.9A 39.5B  3344A 3334B  12,159 12,154  27.41A 27.34B  
LSD Y = ns, IM = 0.9471, Y × I = ns Y = 0.226; I = 0.319, Y × I = ns Y = 7.301; I = 10.32, Y × I = ns I = 8.2864, Y × I = ns Y = 0.066; I = 0.093, Y × I = ns 
TreatmentsGrains per spike
1,000 Grain weight (g)
Grain yield (kg ha−1)
Biological yield (kg ha−1)
Harvest index (%)
2015–162016–17Mean2015–162016–17Mean2015–162016–17Mean2015–162016–17Mean2015–162016–17Mean
I1 43.3 42.7 43.0A 41.8 41.5 41.6B 3,511 3,493 3502B 12,284 12,272 12,278B 28.58 28.46 28.52B 
I2 42.6 41.7 42.1A 44.5 44.2 44.3A 3,881 3,885 3883A 12,900 12,916 12,908A 30.09 30.08 30.08A 
I3 40.2 41.7 40.9B 37.5 37.2 37.4C 3,177 3,164 3171C 12,103 12,099 12,101C 26.25 26.15 26.20C 
I4 37.7 36.3 37.0C 35.6 35.3 35.5D 2,806 2,792 2799D 11,349 11,329 11,339D 24.72 24.65 24.68D 
Mean 41.0 40.6  39.9A 39.5B  3344A 3334B  12,159 12,154  27.41A 27.34B  
LSD Y = ns, IM = 0.9471, Y × I = ns Y = 0.226; I = 0.319, Y × I = ns Y = 7.301; I = 10.32, Y × I = ns I = 8.2864, Y × I = ns Y = 0.066; I = 0.093, Y × I = ns 

Means sharing the same letter did not differ significantly at P = 0.05.

I1 = Full irrigation/Irrigation at all stages (control), I2 = irrigation at 45 mm potential soil moisture deficit, I3 = irrigation at 60 mm potential soil moisture deficit, I4 = irrigation at 75 mm potential soil moisture deficit, Y = sowing year, I = irrigation treatments, Y × I = interaction, ns = non-significant.

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