Response of Rice Genotypes to Weed Competition in Dry Direct-Seeded Rice in India

Table 6

Final plant height (cm plant⁻¹), 1000-grain weight (g), and spikelet sterility (%) in response to weed infestation levels and genotypes.

Treatment	Plant height	1000-grain weight	Spikelet sterility
	cm	g	%
Weed infestation level
Weed-free^a	115.3	26.0	19.5
Partial weedy	116.5	25.6	20.1
LSD (0.05)	NS	NS	1.6
Genotype
PR-115	93.5	24.7	26.2
H-97158	109.4	25.5	18.2
CR2707	124.6	25.4	15.7
US-310	109.2	24.3	25.8
IR88633	150.2	28.9	16.6
IR83927	126.9	27.0	17.1
RH-257	112.6	25.8	19.4
PR-120	100.1	25.5	14.6
LSD (0.05)	7.1	0.5	3.9

Nonsignificant, NS.
^aWeed free plots: plots were kept weed free throughout the season. Partial weedy plots: plots were hand-weeded once at 28 DAS and weeds were allowed to grow before and after the hand-weeding throughout the season.