Control Effect of 20% Saflufenacil Suspension Concentrate on Annual Broadleaf Weeds in Sorghum Field

doi:10.11924/j.issn.1000-6850.casb2022-0390

Abstract

Abstract:

The resistance of broadleaf weeds in sorghum field to herbicides is becoming increasingly serious, and the limited varieties of herbicides that can be used in sorghum field make it difficult to control broadleaf weeds, and the yield of sorghum has been greatly affected. Therefore, there is an urgent need to screen out herbicides with good control effect on resistant broadleaf weeds in sorghum production. This experiment discussed the control effect of different dosages of 20% saflufenacil suspension concentrate on broadleaf weeds in sorghum field, such as Polygonum bungeanum Turcz., Amaranthus retroflexus L. and Chenopodium album L.. The results showed that the medium and high dosages (60, 90 g a.i./hm²) of 20% saflufenacil herbicide suspension concentrate had good control effect on broadleaf weeds in sorghum field. The maximum control effect on the fresh weight of broadleaf weeds could reach 97.75%, and the duration of the effect could be about 30 days. In addition, the herbicide was safe for sorghum, did not affect the yield, and had the characteristics of reducing application and increasing efficiency. The experiment results can provide a theoretical basis for the rational control of broadleaf weeds in sorghum fields.

Key words: sorghum field, saflufenacil, plant control effect, fresh weight control effect, yield

SONG Weifeng. Control Effect of 20% Saflufenacil Suspension Concentrate on Annual Broadleaf Weeds in Sorghum Field[J]. Chinese Agricultural Science Bulletin, 2023, 39(14): 110-114.

Figures/Tables 5

References 25

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处理编号	药剂	施药剂量（制剂量）	有效成分用量
1	20%苯嘧磺草胺悬浮剂	150	30
2	20%苯嘧磺草胺悬浮剂	225	45
3	20%苯嘧磺草胺悬浮剂	300	60
4	20%苯嘧磺草胺悬浮剂	450	90
5	70%苯嘧磺草胺水分散粒剂（对照）	90	63
6	人工除草	-	-
7	空白对照	-	-

处理编号	药剂	施药剂量（制剂量）	有效成分用量
1	20%苯嘧磺草胺悬浮剂	150	30
2	20%苯嘧磺草胺悬浮剂	225	45
3	20%苯嘧磺草胺悬浮剂	300	60
4	20%苯嘧磺草胺悬浮剂	450	90
5	70%苯嘧磺草胺水分散粒剂（对照）	90	63
6	人工除草	-	-
7	空白对照	-	-

处理编号	产量/(kg/hm²)				平均产量/(kg/hm²)
处理编号	Ⅰ	Ⅱ	Ⅲ	Ⅳ	平均产量/(kg/hm²)
1	6087	5994	6078	6159	6080 e
2	7237	7192	7165	7268	7216 c
3	7359	7297	7348	7375	7345 b
4	7461	7352	7286	7452	7388 b
5	7185	7093	7162	7136	7144 cd
6	7458	7517	7541	7492	7502 a
7	5146	5092	5138	5049	5106 f

处理编号	产量/(kg/hm²)				平均产量/(kg/hm²)
处理编号	Ⅰ	Ⅱ	Ⅲ	Ⅳ	平均产量/(kg/hm²)
1	6087	5994	6078	6159	6080 e
2	7237	7192	7165	7268	7216 c
3	7359	7297	7348	7375	7345 b
4	7461	7352	7286	7452	7388 b
5	7185	7093	7162	7136	7144 cd
6	7458	7517	7541	7492	7502 a
7	5146	5092	5138	5049	5106 f

处理编号	本氏蓼		藜		反枝苋
处理编号	防效/%	差异显著性	防效/%	差异显著性	防效/%	差异显著性
1	71.21	C d	75.35	C c	76.29	C c
2	89.96	B c	90.62	B b	90.73	B b
3	95.42	A b	96.21	A a	95.44	A a
4	98.29	A a	97.72	A a	97.85	A a
5	91.07	B c	90.84	B b	91.18	B b