Evaluation of field control efficacy of different pesticides against Tetranych urticae Koch in pear tree

doi:10.16178/j.issn.0528-9017.20230820

Abstract

Abstract:

In order to screen the agents suitable for the control of Tetranych urticae Koch in pear orchards, field efficacy tests were carried out. The results showed that the control efficacy of each agent was 63.93%-74.59% on 3 days after treatment, 71.55%-83.04% on 7 days after treatment, and 75.97%-86.80% on 14 days after treatment. Among them, the control efficacy of 20% cyflumetofen suspension+ 43%bifenazat suspension was the highest after 14 days, reaching 86.80%, followed by 43% bifenazide suspension and 22% avermectin-spirofenolate suspension, with 85.84% and 83.05% after 14 days, respectively. The above three pesticides can be popularized and applied on local pear trees, and a single dose of 20% butafenoxoxil is not recommended.

Key words: Tetranych urticae Koch, acaricides, control efficacy, pear

CLC Number:

S436.612

CAO Mengjiao, XU Weidong, YAO Zhangliang, LU Qiang, JIA Huaizhi, ZHU Chenhui. Evaluation of field control efficacy of different pesticides against Tetranych urticae Koch in pear tree[J]. Journal of Zhejiang Agricultural Sciences, 2024, 65(11): 2672-2675.

Figures/Tables 1

References 11

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处理	药液稀释倍数	3 d		7 d		14 d
处理	药液稀释倍数	虫量/头	防治效果/%	虫量/头	防治效果/%	虫量/头	防治效果/%
240 g·L^-1螺螨酯	3 000	344.67	71.75±0.88 a AB	299.67	71.55±1.16 c A	275.00	82.30±3.10 ab AB
30%乙唑螨腈·螺螨酯	3 000	310.00	74.59±2.91 a A	208.33	80.22±4.11 abc A	285.00	81.65±3.22 ab AB
22%阿维菌素·螺螨酯	3 000	350.67	71.26±2.93 a AB	230.33	78.13±0.93 abc A	263.33	83.05±1.89 ab AB
20%丁氟螨酯	2 000	436.67	64.21±0.72 b B	196.67	81.33±2.76 ab A	373.33	75.97±2.53 b B
45%联肼·乙螨唑	10 000	313.33	74.32±1.97 a A	280.00	73.42±4.38 bc A	280.00	81.97±2.81 ab AB
20%丁氟螨酯+43%联苯肼酯	2 000+1 250	440.00	63.93±0.82 b B	187.67	82.18±3.15 ab A	205.00	86.80±0.37 a A
43%联苯肼酯	1 250	363.33	70.22±1.07 ab AB	178.67	83.04±0.87 a A	220.00	85.84±1.79 a AB
30%腈吡螨酯	3 000	381.67	68.72±1.19 ab AB	255.00	75.79±2.74 abc A	268.33	82.73±1.68 ab AB
清水对照	0	1 220.00	0	1 053.33	0	1 553.33	0

处理	药液稀释倍数	3 d		7 d		14 d
处理	药液稀释倍数	虫量/头	防治效果/%	虫量/头	防治效果/%	虫量/头	防治效果/%
240 g·L^-1螺螨酯	3 000	344.67	71.75±0.88 a AB	299.67	71.55±1.16 c A	275.00	82.30±3.10 ab AB
30%乙唑螨腈·螺螨酯	3 000	310.00	74.59±2.91 a A	208.33	80.22±4.11 abc A	285.00	81.65±3.22 ab AB
22%阿维菌素·螺螨酯	3 000	350.67	71.26±2.93 a AB	230.33	78.13±0.93 abc A	263.33	83.05±1.89 ab AB
20%丁氟螨酯	2 000	436.67	64.21±0.72 b B	196.67	81.33±2.76 ab A	373.33	75.97±2.53 b B
45%联肼·乙螨唑	10 000	313.33	74.32±1.97 a A	280.00	73.42±4.38 bc A	280.00	81.97±2.81 ab AB
20%丁氟螨酯+43%联苯肼酯	2 000+1 250	440.00	63.93±0.82 b B	187.67	82.18±3.15 ab A	205.00	86.80±0.37 a A
43%联苯肼酯	1 250	363.33	70.22±1.07 ab AB	178.67	83.04±0.87 a A	220.00	85.84±1.79 a AB
30%腈吡螨酯	3 000	381.67	68.72±1.19 ab AB	255.00	75.79±2.74 abc A	268.33	82.73±1.68 ab AB
清水对照	0	1 220.00	0	1 053.33	0	1 553.33	0