Bio-efficacy of carfentrazone-ethyl 40% DF against weeds in wheat and its carryover effect on succeeding sorghum
2018
Punia, S.S. | Siṃha, Suśīlakumāra | Poonia, Todar Mal
Effects of different broad-leaf herbicides against complex weed flora in wheat and carryover effect on succeeding sorghum were evaluated at Agronomy Research Farm, CCS Haryana Agricultural University, Hisar during 2017–18. Application of different herbicides significantly reduced the dry weight of weeds compared to weedy check at different growth stages of crop. At 30 days after treatment (DAT), weed control efficiency (WCE) was higher with carfentrazone 20 g/ha (91.8%) compared to carfentrazone 10 g/ha (78.9%). Carfentrazone at different doses provide better control of weed as compared to 2,4-D amine at 60 DAT and at harvest. Number of tillers/m² (401) and grain yield (6.11 t/ha) were recorded significantly higher with carfentrazone at 20 g/ha than carfentrazone at 10 g/ha (372 and 5.62 t/ha), 2,4-D amine at 500 g/ha (366 and 5.26 t/ha) and metsulfuron at 4 g/ha (389 and 5.79 t/ha), respectively. Also, there were no residual effect different herbicides on succeeding sorghum.
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