Synergistic insecticidal composition containing thiamethoxam and tolfenpyrad and application thereof
An insecticidal composition and technology of tonamirad, which is applied in the field of pesticides containing heterocyclic compounds, can solve the problems of easy generation of drug resistance, inability to protect crops, and high cost of drug use, so as to reduce the amount of pesticides used in the field, reduce pesticide residues, and reduce production costs. and cost reduction effect
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Embodiment 1
[0021] Weigh 30 g of thiamethoxam and tolfenpyrad, 4 g of calcium dodecylbenzenesulfonate, 3 g of phenethylphenol polyoxyethylene ether, and vegetable oil to 100 g. Put the above raw materials into a mixing tank according to the conventional method for preparing emulsifiable concentrates, and mix them to prepare thiamethoxam-pyramid emulsifiable concentrates with a main active ingredient of 30% by weight. The specific ratios of thiamethoxam and tolfenpyrad are shown in Table 1.
[0022] The toxicity of thiamethoxam, tolfenpyrad and their compound samples was determined by feed poisoning method against resistant cotton bollworms, each treatment was repeated 3 times, each concentration was treated with 30 heads, and LC 50 Calculate the co-toxicity coefficient according to Sun Yunpei's method:
[0023] Table 1 Toxicity determination and co-toxicity coefficient of thiamethoxam, tolfenpyrad and their compound samples against resistant cotton bollworm
[0024]
[0025] The data...
Embodiment 2
[0027] Weigh 30 g of thiamethoxam and tolfenpyrad, 4 g of calcium dodecylbenzenesulfonate, 3 g of phenethylphenol polyoxyethylene ether, and vegetable oil to 100 g. Put the above raw materials into a mixing tank according to the conventional method for preparing emulsifiable concentrates, and mix them to prepare thiamethoxam-pyramid emulsifiable concentrates with a main active ingredient of 30% by weight. The specific ratios of thiamethoxam and tolfenpyrad are shown in Table 2.
[0028] The toxicity of thiamethoxam, tolfenpyrad and their compound samples to wheat aphids was determined by rice stem dipping method, each treatment was repeated 3 times, and LC 50 Calculate the co-toxicity coefficient according to Sun Yunpei's method:
[0029] Table 2 Toxicity determination and co-toxicity coefficient of thiamethoxam, tolfenpyrad and their compound samples to wheat aphids
[0030]
[0031] The data in the table shows that the mixture of thiamethoxam and tofenpyrad has a synerg...
Embodiment 3
[0033] Weigh 5g of thiamethoxam, 20g of pyrenpyrrole, 4g of calcium dodecylbenzenesulfonate, 3g of phenethylphenol polyoxyethylene ether, and solvent oil to 100g, and put the above raw materials into the mixing kettle according to the conventional method of preparing emulsifiable concentrate Mixed to make thiamethoxam-pyramid emulsifiable concentrate whose main active ingredient is 25% by weight.
[0034] Adopt the sample that embodiment 3 is equipped to carry out the field experiment of field control wheat aphid, contrast medicament is 25% thiamethoxam WP and 25% tolfenpyrad EC, and concrete consumption is shown in Table 3, and water consumption per mu is 30kg, checks 3 after medicine Day, 7 days, 14 days, 28 days results, the test results are shown in Table 3:
[0035] Table 3 example 3 sample is to the field test result of wheat aphid
[0036]
[0037]
[0038] It can be seen from Table 3 that Example 3 has an excellent quick-acting effect on wheat aphids, and has a ...
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