Some common crops sensitive to pesticide formulations

1. Dichlorvos: drupes and kiwifruit are very sensitive and forbidden. Sorghum and rose are sensitive to dichlorvos EC and should not be used. Corn, beans, melon seedlings and willows are also sensitive, diluted not less than 800 times. Dichlorvos has obvious drug damage to ornamental plants such as plum blossom, cherry, peach, apricot, elm leaf plum, 20th century pear, Jingbai pear and so on. Dichlorvos also has varying degrees of drug damage to rhododendron, steamed bread willow, kiwifruit, Robinia pseudoacacia, walnut and melons.

2. Trichlorfon: drupe and kiwifruit are very sensitive and forbidden. Sorghum and beans are particularly sensitive and should not be used. Melon seedlings, corn, apples (dawning, Marshal and other varieties) are also prone to drug damage to trichlorfon in the early stage. It is harmful to the varieties of Jinshuai in cherry blossoms, plum blossoms and apples.

3. Phoxim: sorghum is sensitive and should not be sprayed. Corn can only use granules to control corn borer. Cucumbers and kidney beans are sensitive to the drug, 50% EC 500x spray is harmful, and 1000 times liquid may be slightly harmful. Sugar beet is also sensitive to phoxim, such as when stuffing seeds, the dosage and time should be reduced appropriately. Sensitive to leafy vegetables at high temperature, it is easy to burn leaves. The mechanism of discoloration and other drug damage caused by organophosphorus pesticides such as phoxim is that hydrophobic organophosphorus pesticides are absorbed by chloroplasts or their surrounding tissues, resulting in chloroplast dysfunction, thus hindering the electron conduction reaction, that is, Hill reaction, inhibition of photosynthesis, discoloration, the more serious the drug damage, the decrease of carbohydrate content and the relative increase of total nitrogen. ① solution should be used whenever possible, and should not be mixed with alkaline pesticides. ② the drug is easy to decompose in the light, so it is best to do it in the evening when spraying in the field.

4. Dimethoate and omethoate: kiwifruit and ginseng are particularly sensitive to dimethoate and omethoate and are prohibited. Some varieties of hops, Compositae, sorghum, tobacco, dates, peaches, pears, oranges, apricots, plums, olives and figs are sensitive to 40% dimethoate or omethoate EC diluted less than 1500 times. If peanuts are used too many times, cotyledons will not close at night, so we should pay attention to the concentration before use. It can cause obvious drug damage to ornamental plants of Rosaceae, such as plum blossom, cherry blossom, peach, elm leaf plum, pear, apricot, pear and so on.

5. Stone sulfur mixture: peaches, plums, plums, pears, grapes, beans, potatoes, tomatoes, onions, ginger, melons, cucumbers and so on. It is easy to cause drug damage to the young tissues of grape, peach, pear, plum, apricot and other fruit trees, so it should be used cautiously, preferably in the deciduous season, not in the growing season or in the flowering and fruit season. It has certain drug damage to kiwifruit, grape, cucumber and legume flowers.

6. Bordeaux liquid: potato, tomato, pepper, melon, peach, plum, pear, apple, persimmon, cabbage, soybean, wheat, lettuce, etc., especially sensitive to copper ions, peach, apricot, plum and Hawthorn are sensitive in the production season and should be used with caution. When the lime in Bordeaux liquid is lower than the multiple type, it is easy to cause drug damage to apples and persimmons, so it is necessary to use the lime multiple type; when the lime is higher than the multiple, the grape is prone to drug damage, so half-dose lime is used. For other tree species, different formulations and proportions should be selected according to their characteristics. If the apple is sensitive to copper but resistant to lime, the proportion of lime can be doubled or multi-dose; for pear trees that are not sensitive to lime and copper, equal proportion of lime can be used; for grapes sensitive to lime but tolerant to copper, half-quantity ratio of lime can be used. When mixed with organophosphorus, it should be used with caution. Spray stone sulfur mixture for 10 days before spraying Bordeaux liquid, after spraying Bordeaux liquid, you need to spray stone sulfur mixture for 20 minutes after spraying Bordeaux liquid. ① should not be applied in wet days or before the fog is dry to prevent drug damage. Due to the strong permeability of copper sulfate, what is drenched by Rain Water or dew is lime, and what is left is copper ion, which is very corrosive, which is easy to damage leaves and young fruits. Spray in summer to avoid the hot sun at noon to avoid the drug damage caused by lime caused by high temperature. Spray in the rainy season, increase the amount of lime as appropriate when dispensing. ② can not be mixed with alkaline agents, Bordeaux solution mixed with stone sulfur mixture, thiram, arsenic, etc., or the interval between alternative use is too short, it is easy to cause drug damage. ③ Bordeaux liquid should not be prepared in a metal container. ④ Bordeaux liquid is toxic to silkworms and should not be used on mulberry trees. ⑤ comes with you. Bordeaux liquid preparation: first, pour dilute copper sulfate liquid into concentrated lime milk and stir it while pouring; second, pour diluted lime milk and copper sulfate liquid into stirred whole bucket at the same time, and pour while stirring. This preparation method is simple and convenient, the precipitation of Bordeaux solution is slow, and the protection effect is good after use.

7. Acephate: not suitable for use in mulberry and tea trees.

8. Triazophos: sugarcane.

9. Chlorpyrifos: tobacco.

10. Isocarbophos: striped spots appear on citrus fruits in the high temperature and drought season of more than 28-30 degrees.

11. Parathion: seedlings, pears, peaches, cherries, sorghum and hops of cruciferous vegetables are sensitive to the drug and are prone to drug damage, so it is not suitable for use.

12. Fenitrothion: cruciferous families such as sorghum, corn and cabbage, rape, radish, cauliflower, cabbage, cabbage and cabbage are sensitive to the drug.

13. Malathion: some varieties of tomato seedlings, melons, cowpeas, sorghum, cherries, pears and apples are sensitive to the drug, so pay attention to the concentration when using it.

14. Pyridazine parathion: it can not be used at the same time with 2Jing 4murD herbicide, if the interval between the two drugs is too short, it is easy to cause drug damage.

15. Shamindan: seedlings of cruciferous vegetables such as rice flowering stage, cabbage, cabbage and so on.

16. Insecticidal double: cabbage, cabbage and other cruciferous vegetables seedlings, cotton foliar spray. Legumes and citrus fruit trees are sensitive to it and can only be used in low concentrations.

17. Insecticidal orders: cotton, tobacco, seasonal beans, potatoes and some beans.

Zhong Dingwei: melons, beans, Solanaceae crops.

19. Isoprocarb: potato crops.

Carbaryl: melons.

21. Carbofuran: it can only be used for rhizosphere burial, not dissolved water spraying.

Buprofezin: cabbage, radish.

23. Imidacloprid: legumes, melons.

24. Petroleum emulsion: it is easy to cause drug damage to some peach varieties, and it is best to use it in the deciduous season. Dichlorfon (99.1% mineral oil EC) can be mixed with most insecticides and fungicides, which can reduce liquid evaporation, improve pesticide adhesion and protect insecticide varieties that are easily affected by ultraviolet rays. It can be mixed with avermectin, Bt, imidacloprid, dimethrin, Wanling, Kesha, copper succinate and other medicament. However, this product should not be mixed with sulfur-containing agents, Bordeaux solution, dimethoate, propargite, carbaryl, mites, carbendazim, chlorothalonil and carbendazim pesticides. At the same time, it should also be noted that after spraying the above insecticides on the fruit trees within 14 days, the enemy dead insects can no longer be sprayed, otherwise drug damage will occur. The method of use is to first add a certain amount of water to the container, and then add a specified amount of dichlorfon to the water, and then add enough water. If mixed with other pesticides, you should first mix other pesticides and water and then pour it into the insecticide, not upside down. In order to prevent the phenomenon of potion separation, it should be stirred constantly. The use of oil emulsion in summer, some tree species will occur drug damage, should be tested first.

25. Turpentine mixture: the use of turpentine mixture has obvious drug damage to persimmon in summer and adverse effects on citrus in spring and summer.

26. Pine alkali mixture: deciduous fruit trees are very sensitive to them and should not be used in the summer growing season.

27. Mancozeb: tobacco, Cucurbitaceae, some pears. When mancozeb is applied to pear small fruit, it is easy to appear fruit spot. High concentration will cause withered spots on the edge of rice leaves.

28. Thiophanate: when controlling diseases and insect pests of kiwifruit, topiramate should be avoided. Can be mixed with a variety of pesticides, including alkaline agents, but not with copper preparations

29. Carbendazim: it can be mixed with general fungicides, but it should be used with it. Should not be mixed with copper preparations.

30. Chlorothalonil: it is easy to cause drug damage to pears and persimmons, so it is not suitable for use. Apples cannot be used for 20 days after falling flowers. High concentration is easy to cause drug damage to pear trees, persimmons, peaches and plums.

Sulfur: cucumber, soybean, potato, plum, pear.

32. Flusilazole: some pear varieties are very sensitive in young fruit stage (before May) and should not be used.

33. Cuprous oxide: fruit tree stage and young fruit stage.

34. Acetylene mites: pear trees are prohibited. The dilution of melon, bean and cotton seedlings under 25 cm is not less than 3000 times. Propargite is harmful to the young leaves of citrus spring shoots and produces brown spots. If the concentration of propargite on the fruit is too high, the excessive dosage will produce yellow stripes or irregular rings on the fruit surface, which will affect the appearance of the fruit. It is easy to produce the fruit under high temperature.