Dichlorvos: The stonefruit and kiwifruit are very sensitive and disabled. Sorghum and Chinese rose are sensitive to dichlorvos and should not be used. Corn, beans, melon seedlings and willows are also more sensitive and can not be diluted less than 800 times. Dichlorvos have obvious phytotoxicity on ornamentals such as plum blossoms, cherries, peaches, apricots, twigs, pears of the 20th century, and Beijing white pears. Usually, other types of insecticides should be used instead. Dichlorvos also have varying degrees of phytotoxicity to Rhododendron, taro, kiwifruit, sorghum, walnuts, and melons.
Trichlorfon: The stonefruit and kiwifruit are very sensitive and are prohibited. Sorghum and beans are particularly sensitive and should not be used. Melon seedlings, corn, apples (Dawn, Marshal, and other varieties) are also prone to phytotoxicity to trichlorfon in the early stages. It has phytotoxicity effects on cherry blossoms, plum blossoms, apples and other varieties of Golden Delicious.
Phoxim: sorghum sensitive should not be sprayed, corn can only be used to control corn borer granules. Cucumber and beans were sensitive to the drug, 50% EC 500 times sprayed with phytotoxicity, and 1000 times liquid may also be slightly phytotoxic. Sugar beets are also more sensitive to phoxim. For example, when mixing and boring, the dose and boring time should be appropriately reduced. Sensitive to leafy vegetables at high temperatures, easy to burn leaves. Phosphorus and other organophosphorus pesticides have the mechanism of discoloration and other phytotoxicity. Hydrophobic organophosphorus pesticides are adsorbed by chloroplasts or their surrounding tissues, causing disorder of the chloroplast function and hindering the electronic conduction reaction, ie, the Hill reaction, inhibition. Photosynthesis, discoloration occurs, and the more severe the injury, the lower the carbohydrate content in the body, the relative increase in total nitrogen. 1 With the use of liquid medication, do not mix with alkaline pesticides. 2 The drug is easy to decompose when exposed to light. It is best to do it in the evening in the field.
Dimethoate and Omethoate: Kiwi and ginseng fruits are particularly sensitive to dimethoate and omethoate and are prohibited. Crops such as hops, asteraceae, some varieties of sorghum, tobacco, dates, peaches, pears, oranges, apricots, plums, olives, and figs are sensitive to 40% dimethoate or omethoate diluted below 1500 times. Excessive use of peanuts will make the cotyledons not close at night and should be used before use. For plum blossoms, cherry blossoms, flower peaches, eucalyptus leaves, paste stems jellyfish, apricots, pears and other Rosaceae ornamental plants, can produce significant phytotoxicity, harm to the Aegerita family of shamrock flowers and coral flowers.
Lime sulfur: peach, plum, plum, pear, grape, bean, potato, tomato, onion, ginger, melon, cucumber and so on. The young tissues of grapes, peaches, pears, plums, plums, apricots, and other fruit trees are prone to phytotoxicity and should be used with caution. It is best to spray them in the deciduous season. Do not use them in the growing season or in the fruit and fruit period. For kiwifruit, grapes, cucumbers and leguminous flowers, there are certain phytotoxicity.
Bordeaux mixture: potatoes, tomatoes, peppers, melons, peaches, plums, pears, apples, persimmons, cabbage, soybeans, wheat, lettuce, etc. Particularly sensitive to copper ions, peaches, apricots, plums and hawthorns are more sensitive during the production season. Use it with caution. When the lime in the Bordeaux mixture is less than the double amount formula, it is easy to produce phytotoxicity to apples and persimmons, and it is necessary to use the lime multiplication type; when the lime is higher than the double amount, the grapes are liable to produce phytotoxicity, and the lime semi-quantity is applied. For other tree species, different formulas and ratios should be selected according to their characteristics. For apples that are sensitive to copper and lime-tolerant, lime-multiple or multi-formula can be used. For pears that are less sensitive to lime and copper, equal proportions of lime can be used; lime-sensitive and copper-resistant The grapes can be mixed with half-caloric lime. When mixing with organic phosphorus, care should be taken to use it with mixing. Sprayed with lime sulfur for 10 days before spraying Bordeaux multi-liquid, sprayed Bordeaux mixture after 20-30 days before spraying lime sulfur mixture. 1 Avoid application on cloudy days or before the fog is dry to prevent phytotoxicity. Because of the strong permeability of copper sulphate, it is lime that is left by rain or dew. The remaining is copper ions, and the copper ion is highly corrosive, which can easily damage the leaves and young fruits. Summer spraying avoids the hot sun at noon so as not to cause damage caused by lime. Spray during the rainy season and increase lime dosage as appropriate. 2 can not be mixed with alkaline agents, Bordeaux mixture with lime sulfur, thibetane, thiram, Fumei arsenic and other mixed use, or alternate use interval is too short, are easy to produce phytotoxicity. 3 Bordeaux mixture should not be formulated in metal containers. 4 Bordeaux is toxic to silkworms and must not be used on mulberry trees. 5 with the use of. Bordeaux mixture preparation: First, dilute the copper sulfate solution into the milk of lime, and stir it side by side; second, dilute the milk of lime and the solution of copper sulfate and pour it into the stirred bucket and pour it into the bucket. Stir it. The preparation method is simple and convenient, and the prepared Bordeaux liquid has a slow precipitation and has a good protection effect after use.
Acetomethamine: It should not be used on mulberry or tea trees.
Triazophos: sugar cane.
Chlorpyrifos: Tobacco.
Phosphamidans: Peach trees are sensitive and hanged.
Phosphate: In the condition of excessive water and fertilizer, if the amount exceeds the limit, the mature period of cotton will be postponed.
Monocrotophos: Sorghum is sensitive to this drug and should not be used.
Isocarbophos: Streaked spots appear on fruits used on citrus during the high-temperature and dry seasons of 28-30 degrees Celsius.
Phoxim: Seedlings of cruciferous vegetables, pears, peaches, cherries, sorghum, and hops are sensitive to the drug and are prone to phytotoxicity and should not be used.
Parathion and methyl parathion: Melons, especially seedlings, are sensitive to them and are prone to phytotoxicity and should not be used.
Kill chlorsulfuron: sorghum, corn and cabbage, rape, radish, broccoli, cabbage, vegetables, cruciferous and other Cruciferae sensitive to the drug, pay attention.
Malathion: Some varieties of tomato seedlings, melons, cowpeas, sorghum, cherries, pears, and apples are sensitive to the drug and are used with caution.
Pyridazine: It cannot be used together with 2,4-D herbicides. If the interval between two drugs is too short, it is easy to produce phytotoxicity.
Killing Dandan (Badan): Seedlings of cruciferous vegetables such as flowering rice, cabbage, and cabbage.
Insecticides: cotton, tobacco, green beans, potatoes and certain beans.
Zhong Dingwei (Basha): melon, beans, solanaceous crops.
Isoprocarb: potato crops.
Carbaryl (West Vewe): Melons.
Sitabao: cabbage seedlings.
Carbofuran: Can only be used as a rhizosphere, but it cannot be sprayed with water.
Buprofezin: cabbage, radish.
Insecticide double: cruciferous vegetable seedlings such as cabbage and cabbage, and cotton leaf spray. Beans, citrus fruit trees sensitive to them, can only use low concentrations.
Mancozeb: tobacco, cucurbitaceae, certain pears. Mango manganese zinc preparation when pear small fruit, prone to fruit surface spots. A high concentration will cause spots on the edges of rice leaves.
Topozone: Topiramate should be avoided when controlling kiwifruit pests and diseases. Can be mixed with a variety of pesticides, including alkaline agents, but not with copper preparations
Carbendazim: Can be mixed with general bactericides, but it should be used together with it. Can not be mixed with copper preparations.
Chlorothalonil: It is prone to phytotoxicity to pears and persimmons and should not be used. It cannot be used within 20 days after the apple is dropped. High concentrations of pears, persimmons, peaches, plum easily produce phytotoxicity.
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