Table 2: Grain sorghum response to single and twin rows and plant populations under dryland conditions.

Rows Plant populationsHeads/plant

Number of seed/headGrain weight/head (g)Weight of
1,000 seed (g)
Yield (kg/ha)
(1000s/ha) 2000 20012000 2001200020012000200120002001

Single row 124–1600.980.711610 77640.323.825.0 18.9 44002140
161–1980.880.631436 59233.114.023.1 19.8 51101910
199–2350.90127234.026.9 5400

Twin rows 124–1600.770.681937 53148.110.424.8 19.6 57001810
161–198 0.810.421650 54240.410.124.5 18.7 56401430
199–2350.84144934.423.8 5780

LSD (0.05)0.120.13 316 15011.2 2.3 NS NS 1010 570