Washing powder can kill these four major pests, but it is a pity that many farmers will not use it!

Washing powder is a kind of contact insecticide and acaricide, which can prevent and control the four major pests (aphids, red spiders, whitefly, scale insects) that are often easy to occur in the family balcony, such as vegetable growing, flower growing, and fruit trees.
Effect
.
Commonly used neutral detergent powder 500-800 times liquid spray, can control adult aphids, nymphs, adult mites, nymphs and young mites, and inhibit the hatching of mite eggs, spray with 300-500 times liquid, can control whitefly adults , Nymphs and scale insect nymphs: Use 800-1000 times liquid to irrigate the roots to prevent and control the nematodes of tubers and tubers
.
In addition, washing powder is also effective against some moth larvae and white butterfly larvae
.
Why can washing powder kill insects? This is because the main ingredient of washing powder (that is, a commonly used daily detergent) is sodium dodecylbenzene sulfonate and its auxiliary substances, and the general content is 20%-30%
.
It is easily soluble in water, and its aqueous solution shows alkaline reaction
.
It mainly has contact killing effect on pests and can inhibit the hatching of mite eggs
.
Spraying washing powder water on the insect body can dissolve the wax on the insect body and attach it to the insect body, forming a layer of film to block the stomata, and suffocate the pest to death
.
When using washing powder, you should pay attention to choosing neutral washing powder to prevent the washing powder from being too alkaline and causing young leaves to burn
.
After spraying, if young leaves are found to be burned, spray water immediately to rinse off the remaining washing powder
.
The concentration used by different flowers is different.
The concentration test should be done first, and then sprayed
.
Washing powder not only directly kills a variety of agricultural and forestry pests, but also is economical and convenient, harmless to humans and livestock, and does not pollute the environment.
It is a new plant protection technology worthy of vigorous promotion
.
The main principle of washing powder to prevent pests 1.
The sodium alkylbenzene sulfonate in washing powder has a toxic effect, and it can poison and kill the pests after entering the insect body through the respiratory tract
.
2.
The washing powder solution is moist and spreading.
After contact with the insect body, a layer of airtight film will be formed on the surface of the insect, which will suffocate the insect to death
.
3.
The washing powder solution is sticky, and the adult worms are sticky after contact and cannot take off.
They will die naturally after a long time.

.
Usage 1.
When used alone to control aphids, whiteflies, red spiders, Pieris rapae, looper, spiny moths and other pests, use washing powder 900 times to 1000 times liquid to spray the backs of leaves and twigs, about 1 hour to 2 The mortality rate reaches 100% within hours; to control scale insects, green peach aphid and other pests, spray 500 times to 700 times liquid, spray once every 3 days, spray 3 times, the insecticidal rate can reach 94% to 99.
4%
.
2.
When mixed with urea, the medicinal solution prepared by this method is commonly called "washing urine mixture", which not only has good insecticidal effect, but also can play the role of extra-root top dressing
.
The preparation method is: 0.
5 kg of washing powder, 2 kg of urea, 200 kg of water, mixed and dissolved and ready; when used, generally spray 50 kg to 100 kg per mu
.
This method is mostly used to control aphids, cabbage caterpillars, spider mites on cotton, vegetables and flowers; because urea has the effect of destroying insect chitin, it has a better control effect than washing powder alone
.
3.
When mixed with diesel oil, the "firewood washing emulsion" made by mixing diesel oil and washing powder has strong penetrating and contact killing effects, and has special effects on whiteflies, scale insects and other pests.
WeChat search vegetable farming circle pays attention
.
The preparation method is as follows: first dissolve 0.
5 kg of washing powder into a thin paste with 1.
5 kg of clean water, and then heat 2.
5 kg of diesel oil to 60°C to 70°C over water, and then slowly pour it into the washing powder paste liquid while adding edges.
Stir, mix well and inject it into another container with a sprayer to make it fully emulsified, and then use it after diluting with water
.
4.
When mixing with engine oil, first dissolve 1 part of washing powder with 2 parts of water, then add 1/20 of the total amount of washing powder and water with engine oil, stir well, stand for 1 hour and then become mother liquor; use 150 times in winter and early spring Liquid to 200 times liquid, 200 times liquid to 300 times liquid spray in summer and autumn, the effect of preventing and controlling red spiders can reach more than 98%
.
5.
When mixing with chemical pesticides, when using chemical pesticides to control pests on vegetables with more waxy leaves (such as cabbage, etc.
), add 0.
1% washing powder to the liquid to enhance the adhesion and spreading of the liquid , Thereby improving the control effect
.
When washing powder is used, it must be sprayed on both the front and back sides of the leaves to make it touch the insect body to have the insecticidal effect, but it cannot be used multiple times
.
1.
Mechanism Urea has the effect of destroying chitin in the body wall of aphids.
The washing powder contains surfactant sodium alkylbenzene sulfonate, which can dissolve the waxy layer of the body wall of aphids and attach to it to form an impermeable and air-tight A thin film caused the aphids to suffocate and die by clogging their stomata
.
The two are used in combination, which is highly efficient, pollution-free, convenient and has the effect of top dressing, so you might as well try it
.
2.
The preparation ratio of washing powder, urea and water is 1:3:300
.
When preparing, use hot water to melt the washing powder, then add urea and water, and mix well
.
3.
Matters needing attention When preparing, stir well, and do not leave any particles.
These particles may cause the blade to burn
.
The spray must be even, and the liquid must be sprayed on the aphids, otherwise it will not work
.
Reminders: 1.
The above description is that the washing powder is not a washing liquid, most of the washing powder is alkaline, and neutral washing powder should be used (the washing powder bag contains instructions)
.
2.
Use caution, use caution when the vegetables are harvested (be sure to clean the vegetables several times when using)
.
The small dishes just unearthed should also be used with caution
.
The pictures and texts come from the Internet and must be deleted for infringement
.
----------------------- Official account: Le Nong Sharing (ID: lenongfenxiang) Le Nong Sharing focuses on authoritative data tracking of agricultural product prices, providing the latest and most professional Market analysis of agricultural products
.