Integration of Agronomic Practices with Herbicides for Sustainable Weed Management in Aerobic Rice

Table 5

Yield attributes, yield and relative yield loss of rice variety AERON 1 as influenced by weed control treatments (averaged over seasons).

Treatment	Panicles/; m^2  (no.)	Filled grains/; panicle (no.)	Thousand-seed weight (g)	Grain yield (t/ha)	Relative yield loss (%)
T1	236.00^e	57.83^e,f	26.23^e	4.05^e	13.46
T2	235.17^e	59.00^d,e	26.28^e	4.13d^e	11.75
T3	244.00^d,e	59.67^c,e	26.90^d	4.23^c,e	9.62
T4	270.83^a	63.90^a,b	27.33^b,c	4.49^a,c	4.06
T5	273.50^a	63.83^a,b	27.40^a,b	4.55^a,b	2.78
T6	220.83^f	54.17^f,g	26.05^e	3.67^f	21.58
T7	254.67^c,d	63.17^a,c	27.27^b,c	4.40^a,d	5.98
T8	258.00^b,c	62.17^a,d	27.33^b,c	4.43^a,c	5.34
T9	220.50^f	51.33^g	26.27^e	3.77^f	20.44
T10	268.50^a,b	64.12^a,b	27.32^b,c	4.47^a,c	4.49
T11	273.00^a	64.33^a,b	27.50^a,b	4.53^a,b	3.21
T12	215.83^f	53.83^f,g	26.27^e	3.60^f	23.08
T13	244.17^d,e	61.33^b,e	26.90^d	4.36^b,d	6.84
T14	271.17^a	64.50^a,b	27.32^b,c	4.45^a,c	4.91
T15	275.33^a	66.00^a	27.62^a	4.68^a	00.00
T16	180.43^g	45.83^h	25.53^f	1.77^g	62.18
LSD	10.98	4.04	0.26	0.28	—

T1: pretilachlor/safener fb bentazon/MCPA; T2: pretilachlor/safener fb manual weeding; T3: pretilachlor/safener fb propanil/thiobencarb; T4: pretilachlor/safener fb propanil/thiobencarb fb bentazon/MCPA; T5: pretilachlor/safener fb propanil/thiobencarb fb manual weeding; T6: propanil/thiobencarb; T7: propanil/thiobencarb fb bentazon/MCPA; T8: propanil/thiobencarb fb manual weeding; T9: cyhalofop-butyl + bensulfuron; T10: cyhalofop-butyl + bensulfuron fb bentazon/MCPA; T11: cyhalofop-butyl + bensulfuron fb manual weeding; T12: bispyribac-sodium; T13: bispyribac-sodium fb bentazon/MCPA; T14: bispyribac-sodium fb manual weeding; T15: season long weed-free by manual weeding; T16: season long weedy. LSD: least significant difference.
Within a column, means sharing same alphabets are not significantly different at P = 0.05 probability level according to the least significant difference (LSD) test.