Precautions when using several common pesticides

1. Omethoate: hops, compositae, some varieties of sorghum and tobacco, jujube, peach, plum, apricot, plum, olive, fig, citrus and other crops, sensitive to the water doubling ratio of 1500 times or less It should be tested first before use to determine its concentration. Omethoate is prohibited from being used on fruit trees.

2, trichlorfon: particularly sensitive to corn, apples, sorghum, beans, easy to produce phytotoxicity, peach trees are banned.

3, dichlorvos: sensitive to sorghum, beans, rose, corn, melon seedlings and rubber, should be used with caution. It is highly susceptible to phytotoxicity to stone fruit trees and should be banned. (For example, peach trees spray dichlorvos, trichlorfon, dimethoate, etc. before the hard core period, which is easy to cause fruit drop).

4, è™± è™± Ling: Do not directly contact the cabbage, radish, or brown spots and green leaves will appear.

5, chlorpyrifos: medicinal damage to melon seedlings, should be used after 1 metre long melon; sensitive to tobacco.

6, speed culling: avoid flowering use, so as not to cause phytotoxicity. If the concentration is increased arbitrarily, it will cause brown leaf spots. In June-July, the temperature is more than 30 °C and 800-1000 times, the young fruit is easy to produce phytotoxicity.

7, phoxim: sensitive to cucumber, beans, taro, sugar beet, rice, corn, etc., easy to produce phytotoxicity.

8, dicofol and dicofol: sensitive to some apples, pears, low temperatures, more humid weather. Dicofol is prohibited from being used on tea or fruit.

9, three-ring tin: citrus is prone to phytotoxicity.

10, triazolyl: spraying 1300 times triazolium tin in August-September will increase the incidence of orange fruit sunburn.

11, oil emulsion: germination and flowering spray oil 150 times +40% sulphate 1200-1500 times, causing phytotoxicity, 10-15 days after spraying the oil emulsion to spray stone sulphur mixture, Bordeaux mixture; sprayed Do not use organophosphorus pesticides within 1 week of pineine mixture, and do not spray stone sulfur mixture within 20 days.

12, pyrethroid: the drug used in the orange orchard more than 2 times will induce sputum outbreaks.

13. Isoprocarb (Ye Yi San): It has phytotoxicity to potato.

14. Insecticide double: It is easy to cause phytotoxicity to cruciferous vegetable seedlings such as Chinese cabbage and cabbage, and citrus and other crops. Spraying citrus 300 times in the summer will cause yellowing of the leaves and fruits.

15. Insecticide: It has phytotoxicity to cotton and beans.

16, inhibition Taibao: sensitive to cabbage seedlings.

17. Kezhen San: It is not recommended to be mixed with silkworm insecticides , because the silkworm toxin insecticide is accelerated to be highly toxic to the silkworm poison.

18. Adding rice: It has slight phytotoxicity to soybeans and alfalfa. It should be taken care of when using nearby soybeans and alfalfa.

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