Whitefly-killing pharmaceutical composition
A composition and technology of whitefly, applied in the field of pharmaceutical composition for killing whitefly, can solve the problems of insecticide-resistant pests, pest resistance and drug resistance differences, etc. No environmental toxicity, small effect
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Embodiment 1
[0023] This embodiment provides a pharmaceutical composition for killing whitefly, including the extracts of leeches, the extracts of veratrum, the extracts of Cranegrass buds, the extracts of Xuejianxie, the extracts of Qiannianjian, the extracts of Banyan barbarum, and the Flower Extract, Gorgon Seed Extract, Cotton Root Extract and Monocrotophos in the following quantities:
[0024]
[0025]
[0026] Its preparation method: Add water to decoct sage, veratrum, and crane grass buds twice, each time for 2 hours, combine the decoction, add ethanol to filter and concentrate, add 3 times the amount of water, fully stir, refrigerate for 48 hours, filter, and the filtrate Concentrate under reduced pressure to a relative density of about 1.15, and prepare the liquid medicine for later use; decoct Xue Jianchou, Qiannianjian, banyan beard, inula, Gorgon seed, and yellow root with water for two times, 1 hour each time, combine the decoction, and filter , concentrate the filtrate,...
Embodiment 2
[0029] This example verifies the killing rate of the pharmaceutical composition against whitefly compared with common insecticides in the market.
[0030] Select the common insecticides on the market: P. lilacinus water agent, nematicide, special root thread agent, and thiamethoxam insecticide.
[0031] Group according to different insecticides, each group prepares 1000 whiteflies in three stages of eggs, larvae, and adults respectively, and then uses insecticides on whiteflies in each stage respectively, and tests the effect of each group of insecticides kill rate, as shown in the table below:
[0032] Table 1 The killing effect of insecticides on whitefly
[0033]
[0034] It can be seen from the above table that each group of insecticides has the highest killing rate on whitefly in the larval state, and this product has the best insecticidal effect, and the killing effect is remarkable, even the eggs that are most difficult to kill have good killing effect .
Embodiment 3
[0036] This example verifies the killing rate of the pharmaceutical composition on various pests.
[0037] Select 10,000 scarabs, beetles, leafhoppers, borers, pear psyllids, scale insects, spinach moths, mole crickets, vetch, and whitefly, and group them respectively, and use the medicine prepared in Example 1 to make a medicine solution of the same concentration , spray the pests of each group respectively, and after 1 hour, check the killing rate of various pests, the results are shown in the following table:
[0038] Table 2 The killing effect of the drug on various pests
[0039] group
[0040] It can be seen from the above table that the medicine prepared in Example 1 only has a good killing effect on whitefly, and has a very limited killing effect on other pests. This proves that this product is highly targeted and can only be used For the extermination of whitefly.
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