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

Table 8

Crop biomass (t ha⁻¹) in response to the interaction effect of weed infestation levels and genotypes at panicle initiation and flowering stages.

Weed infestation level	Crop biomass
	PR-115	H-97158	CR2707	US-310	IR88633	IR83927	RH-257	PR-120
	t ha^−1
Panicle initiation stage
Weed-free^a	4.3	4.8	3.20	3.80	4.90	4.40	4.50	4.60
Partial weedy	3.30	3.25	3.15	3.40	4.22	4.14	4.40	4.80
LSD (0.05)	0.3
Flowering stage
Weed-free	6.98	7.48	6.98	7.21	8.02	7.12	7.32	7.18
Partial weedy	3.82	4.25	4.10	4.12	4.90	5.12	5.30	5.92
LSD (0.05)	0.5

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.