Preparation method of pharmaceutical composition for killing whiteflies
A composition and technology for whitefly, applied in the directions of botanical equipment and methods, insecticides, biocides, etc., can solve the problems of insect resistance and drug resistance differences, and insecticidal effects are prone to drug-resistant insects, etc. No environmental toxicity, not easy to drug resistance, good safety effect
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Embodiment 1
[0023] This embodiment provides a pharmaceutical composition for killing whitefly, including extracts of babubu extracts, dry lacquer charcoal extracts, crane grass buds extracts, Yu Liren extracts, chamaejasbae extracts, Gentiana chinensis extracts, and jackba extracts , notopterygium extract, xuejianchou extract and xylin, the components are as follows:
[0024]
[0025]
[0026] Its preparation method: adding water to decoct babu, dry lacquer charcoal, and crane grass sprouts twice, each time for 2 hours, combine the decoction, add ethanol to filter and concentrate, add 2 times the amount of water, fully stir, refrigerate for 48 hours, filter, The filtrate is concentrated under reduced pressure to a relative density of about 1.28, and the medicinal liquid is used for later use; Yu Liren, chamaema chamaejasme, Gentiana chinensis, Qianjinba, notopterygium, and xuejianchou are decocted twice, each time for 0.5 hours, combined decoction, filtered, and concentrated 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, and then uses insecticides on whiteflies in each stage, and tests 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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