Control effect of commonly used pesticides on Chilo suppressalis Walker and leaf roller borer in early rice

doi:10.16178/j.issn.0528-9017.20231048

Abstract

Abstract:

In order to clarify the control effect of commonly used pesticides on Chilo suppressalis Walker and the effect on leaf roller borer in early rice, field pesticide trials were carried out from May to August 2023. The results showed that 667 m² with 100 mL of 25% quinthion EC, 12 g of 25% ethylspinosasad water-dispersible granules and 30 mL of new agent CS003-S had good control effect on Chilo suppressalis Walker, and the control effect was more than 85%, and the yield recovery loss rate was more than 35%. In 667 m², 24 mL of 34% ethyl methoxy insect suspension, and 10 mL of 200 g·L^-1 tetrazolium anthramide suspension had poor control effect on Chilo suppressalis Walker, and they were not recommended to use alone. The application of these pesticides on early rice would aggravate the occurrence of leaf roller borer in the later stage to varying degrees, and the number of leaf curls after 667 m² using 100 mL of 25% quinthion EC or 30 mL of the new agent CS003-S were significantly higher than that of control, which may be caused by the influence of pesticides on the number of natural enemies in the field. Therefore, from the perspective of economic and ecological benefits, it is more appropriate to apply 25% ethylspinosasad water-dispersible granules on early rice.

Key words: early rice, Chilo suppressalis Walker, leaf roller borer, yield

CLC Number:

S433.4

CAO Mengjiao, YAO Zhangliang, WANG Yeqing, YE Liping, YING Chao, CHEN Yiping. Control effect of commonly used pesticides on Chilo suppressalis Walker and leaf roller borer in early rice[J]. Journal of Zhejiang Agricultural Sciences, 2025, 66(2): 421-424.

Figures/Tables 3

References 10

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供试药剂	667 m²单次用量	枯鞘率/%	防治效果/%
25%喹硫磷乳油	100 mL	2.45±0.68 c	93.24±1.49 a
34%乙多·甲氧虫悬浮剂	24 mL	10.07±2.45 bc	74.29±2.10 b
25%乙基多杀菌素水分散粒剂	12 g	3.64±0.97 c	89.64±2.28 a
200 g·L^-1四唑虫酰胺悬浮剂	10 mL	17.60±2.91 b	51.50±5.46 c
CS003-S	30 mL	3.89±1.22 c	90.57±1.15 a
空白对照	0	37.65±9.37 a	0

供试药剂	667 m²单次用量	枯鞘率/%	防治效果/%
25%喹硫磷乳油	100 mL	2.45±0.68 c	93.24±1.49 a
34%乙多·甲氧虫悬浮剂	24 mL	10.07±2.45 bc	74.29±2.10 b
25%乙基多杀菌素水分散粒剂	12 g	3.64±0.97 c	89.64±2.28 a
200 g·L^-1四唑虫酰胺悬浮剂	10 mL	17.60±2.91 b	51.50±5.46 c
CS003-S	30 mL	3.89±1.22 c	90.57±1.15 a
空白对照	0	37.65±9.37 a	0

供试药剂	单次用量	667 m²实际产量/kg	667 m²挽回产量/kg	产量挽回损失率/%
25%喹硫磷乳油	100 mL	492.78±18.76 ab	160.17	48.16
34%乙多·甲氧虫悬浮剂	24 mL	412.41±13.46 bcd	79.80	23.99
25%乙基多杀菌素水分散粒剂	12 g	511.66±14.83 a	179.05	53.83
200 g·L^-1四唑虫酰胺悬浮剂	10 mL	402.60±23.07 cd	69.99	21.04
CS003-S	30 mL	454.96±48.36 abc	122.35	36.78
空白对照	0	332.61±9.11 d	0	0

供试药剂	单次用量	667 m²实际产量/kg	667 m²挽回产量/kg	产量挽回损失率/%
25%喹硫磷乳油	100 mL	492.78±18.76 ab	160.17	48.16
34%乙多·甲氧虫悬浮剂	24 mL	412.41±13.46 bcd	79.80	23.99
25%乙基多杀菌素水分散粒剂	12 g	511.66±14.83 a	179.05	53.83
200 g·L^-1四唑虫酰胺悬浮剂	10 mL	402.60±23.07 cd	69.99	21.04
CS003-S	30 mL	454.96±48.36 abc	122.35	36.78
空白对照	0	332.61±9.11 d	0	0

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