Field control efficacy of different herbicide dosages and their effects on maize safety

doi:10.16178/j.issn.0528-9017.20221193

Abstract

Abstract:

In order to screen the efficient and safe herbicide dosage and synergistic effect of additives in maize field, and improve maize production efficiency, the effect of field soil spraying on weed control in maize fields and its impact on safety and yield of maize was investigated, in Jiamusi City, acetochlor (81.5% emulsifiable concentrate), atrazine (38% suspension) and two herbicide additives were selected, and each herbicide combination was set with two concentrations of low and high, and each additive was set with three concentrations of low, medium and high. The results showed that pre-emergence weeding had a control effect on all field weeds, and the weed control rate in the field was also reduced with the reduction of herbicide dosage, and the weed control rate could be increased by adding additives. In general, 1 472 g·hm^-2 acetochlor +11 482 g·hm^-2 atrazine +225 mL·hm^-2 additives 2 had the best control effect.

Key words: maize, herbicide, prevention effect, safety

CLC Number:

S513

Zhonglin NIU, Xiaochun JIN, Lili WU, Rulai LI, Baifu JIANG, Qingsheng WANG, Nannan WANG. Field control efficacy of different herbicide dosages and their effects on maize safety[J]. Journal of Zhejiang Agricultural Sciences, 2024, 65(2): 382-384.

Figures/Tables 3

References 9

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处理	乙草胺/ (mL·hm^-2)	莠去津/ (mL·hm^-2)	助剂1号/ (mL·hm^-2)	助剂2号/ (mL·hm^-2)
1	1 472	11 842	0	0
2	1 472	11 842	150	0
3	1 472	11 842	225	0
4	1 472	11 842	450	0
5	1 472	11 842	0	150
6	1 472	11 842	0	225
7	1 472	11 842	0	450
8	1 840	15 789	0	0
9	0	0	0	0

处理	乙草胺/ (mL·hm^-2)	莠去津/ (mL·hm^-2)	助剂1号/ (mL·hm^-2)	助剂2号/ (mL·hm^-2)
1	1 472	11 842	0	0
2	1 472	11 842	150	0
3	1 472	11 842	225	0
4	1 472	11 842	450	0
5	1 472	11 842	0	150
6	1 472	11 842	0	225
7	1 472	11 842	0	450
8	1 840	15 789	0	0
9	0	0	0	0

处理	株高/cm		小区产量/ kg
处理	15 d	30 d	小区产量/ kg
1	28.3	38.6	24.75 A
2	31.1	42.4	23.00 AB
3	28.8	39.0	22.91 AB
4	29.0	40.4	22.32 AB
5	29.3	42.2	24.91 A
6	27.6	38.8	25.20 A
7	29.1	40.3	23.58 AB
8	30.1	40.2	24.33 A
9	28.8	40.2	19.34 C

处理	株高/cm		小区产量/ kg
处理	15 d	30 d	小区产量/ kg
1	28.3	38.6	24.75 A
2	31.1	42.4	23.00 AB
3	28.8	39.0	22.91 AB
4	29.0	40.4	22.32 AB
5	29.3	42.2	24.91 A
6	27.6	38.8	25.20 A
7	29.1	40.3	23.58 AB
8	30.1	40.2	24.33 A
9	28.8	40.2	19.34 C

处理	野黍	稗草	苘麻	龙葵	藜	问荆	豨签	鸭拓草	野西瓜苗	柳叶刺蓼	铁苋菜	葎草	圆叶牵牛	综合防除效果
1	50.0	93.2	33.3	77.2	100.0	50	89.7	100	96.7	80	50.0	100	100	78.5
2	60.3	79.2	66.7	75.6	88.7	50	93.1	100	100.0	80	50.0	100	100	80.3
3	37.9	82.8	66.7	83.3	95.7	75	96.6	100	100.0	100	73.3	100	100	85.5
4	15.5	92.2	66.7	87.2	95.7	75	96.2	100	100.0	100	85.0	100	100	85.7
5	50.0	83.5	66.7	88.9	100.0	50	62.5	100	100.0	100	58.3	100	100	81.5
6	75.5	88.3	100.0	83.3	100.0	75	96.6	100	100.0	80	63.3	100	100	89.4
7	69.7	85.7	66.7	91.7	95.7	75	95.5	100	96.7	80	73.3	100	100	86.9
8	67.9	86.4	100.0	94.4	95.7	75	95.5	100	100.0	100	100.0	100	100	93.5