Abstract:
Objective To evaluate the effect of two flight control additives on the control of weeds by 50% difluosulfamide SC in oat field.
Methods Plant protection drone DJI T30 was applied to control weeds in oat field by spraying 50% difluosulfamide SC additive.
Results The results showed that the plant control effect of 50% difluosulcham SC75ml·hm−2 on weeds in oat field was 60.38% and 60.16% after 20 and 40 days, respectively, and the fresh weight control effect on weeds in oat field was 81.23% at 40 days. 50% difluosulachlor SC67.5ml·hm−2+ Maifei 180 ml·hm−2, 50% difluosulachlor SC60ml·hm−2+ Maifei 180 ml·hm−2250%, 50% difluosulachlor SC52.5ml·hm−2+ Maifei 180 The plant control effects of ml·hm−2 and 50% difluosulchlor SC37.5ml·hm−2+ Maifei 180 ml·hm−2 on weeds in oat field 40d after treatment were 72.31%, 71.78%, 70.44% and 57.64%, respectively. The fresh weight control effects on weeds in oat fields were 83.26%, 81.26%, 77.92% and 62.54%, respectively. 50% difluosulchlor SC67.5ml·hm−2+ Red Swift 180 ml·hm−2, 50% difluosulchlor SC60ml·hm−2+ Red Swift 180 ml·hm−2, 50% difluosulchlor SC52.5ml·hm−2+ Red Swift 180 The plant control effects of ml·hm−1 and 50% difluosulchlor SC37.5ml·hm−2+ Red Swift 180 ml·hm−2 on weeds in oat field 40d after treatment were 83.61%, 78.28%, 71.05% and 54.98%, respectively. The fresh weight control effects on weeds in oat fields were 91.43%, 91.43%, 87.43% and 63.22%, respectively.
Conclusion The two flight control AIDS Maifei and Hongyanyan have obvious synergistic effect on the control of weeds in oat field by 50% difluosulfamide SC, and the difference of synergistic effect between the two AIDS is not obvious. After adding 180mL/hm2, the amount of difluosulchlor SC10%-30% can be reduced by 50%, which is safe for oats, and the yield increase is 6.86%-10.81%.