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How to determine pesticide phytotoxicity? These judgment methods are worth knowing
How to determine pesticide phytotoxicity? Please provide an introduction to the methods. For phytotoxicity caused to crops, the existence of factors such as disease, nutrient deficiency, and crop physiological disorders increases the difficulty of identification. When phytotoxicity occurs and crop growth is abnormal, the following points should be noted in diagnosis: First, the abnormal...
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Which pesticides are prone to causing phytotoxicity when sprayed on fruit trees
Which pesticides can cause phytotoxicity in fruit trees? Please give an introduction. Pesticides that can cause phytotoxicity in fruit trees include: Omethoate: Apricot, pear, peach, fig and other fruit trees are sensitive to this pesticide solution at dilution concentrations below 1500 times, and phytotoxicity is very likely to occur when sprayed. In addition, during high-temperature seasons (above 30°C), use it as little as possible...
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How to prevent pesticide damage to crops? A detailed guide to practical prevention methods
How to prevent crops from suffering pesticide damage? Please give an introduction to prevention methods. Correctly selecting pesticides: when choosing pesticides, understand their characteristics and apply them strictly according to the control scope stated on the label. When purchasing, guard against counterfeit and inferior products, and ask for a purchase invoice or credit card.
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Which crops are prone to phytotoxicity from common pesticides?
Which crops will common pesticides cause phytotoxicity to? Please give an introduction. Common pesticides cause the following phytotoxicity to crops: Lime sulfur mixture: It is phytotoxic to plants such as peach, plum, apricot, and pear. If used on these plants, it is best to spray during the leaf-drop season, and it must never be used during the growing season or the flowering and fruiting period. Fenitrothion: In...
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How to avoid pesticide phytotoxicity? A detailed guide to practical prevention methods
How to avoid pesticide phytotoxicity? Please provide guidance methods. To avoid pesticide phytotoxicity, you can refer to the following methods: 1. Fully understand the basic nature of phytotoxicity, strictly control the dosage and concentration used, choose the correct time and method of application, and do not arbitrarily increase the amount or frequency. 2. Understand the quality of the pesticide....
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Precautions for Using Glyphosate for Weed Control in Corn Fields
What should be noted when using glyphosate for weed control in corn fields? Please give an introduction. Glyphosate is a systemic herbicide. When used for weed control in corn fields, if used improperly, it can cause damage to corn. There are mainly the following reasons: First, a lack of understanding of the properties of glyphosate. Glyphosate is a systemic her...
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How is the herbicide pyroxsulam used in wheat fields?
How is the herbicide pyroxsulam used in wheat fields? Please give an introduction. Pyroxsulam 7.5% water-dispersible granules, a priority for weed control in wheat fields, is a sulfonamide herbicide launched in the winter of 2009 by Dow AgroSciences of the United States for controlling grass weeds in wheat fields while also controlling broadleaf weeds. In recent years, through a large number of trials and...
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What Are Plant Growth Regulators? A Clear Guide
What are plant growth regulators? A detailed introduction. Plant growth regulators are a class of substances used to regulate plant growth and development. Plant growth regulators are also called exogenous plant hormones, generally produced through artificial synthesis or microbial fermentation, and their physiological effects and biological effects are the same as or similar to natural plant hormones...
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What are the symptoms of organophosphate pesticide poisoning?
What are the symptoms of organophosphate pesticide poisoning? Please explain. Organophosphorus compounds are a type of insecticide widely used in agriculture and healthcare, and most have varying degrees of toxicity. They can enter the bodies of fur-bearing economic animals through the digestive tract, respiratory tract, skin, and mucous membranes, causing poisoning. Organophosphate pesticides that can cause poisoning include 1605, 1059, trichlorfon, dichlorvos, dimethoate, and more than 10 other types. Feeding grain, wild grass, or vegetables after organophosphate pesticides have been spread on them, or feed contaminated by them; spreading organophosphate pesticides near fur-bearing economic animal farms, with liquid splashing and being inhaled by the animals; using utensils previously used to prepare organophosphate pesticides to mix feed, or drinking water contaminated by them, can all cause organophosphate poisoning in fur-bearing economic animals. In addition, feeding the meat carcasses and by-products of livestock, poultry, and other animals that died from organophosphate pesticide poisoning, or using organophosphate pesticides to treat internal and external parasitic diseases in animals with improper dosage or excessively high concentration, can also cause poisoning. According to the amount of poison, the course of poisoning, and the manifestations, it can be divided into acute poisoning and chronic poisoning. In acute poisoning, the sick animal has difficulty breathing, salivates, foams at the mouth, sheds tears, snorts, and the conjunctiva and oral mucosa become cyanotic: the pupils constrict; diarrhea occurs with thin feces containing blood, with frequent defecation and urination; the skin feels cool; the animal is highly sensitive to external stimuli, in a state of excitement, with hearing loss and inhibited visual responses; the hind limbs are paralyzed, unable to stand, and walking is difficult. Muscle groups throughout the body show spasmodic contractions of varying degrees, skeletal muscles tremble, the whole body becomes weak, and death usually results from paralysis of the respiratory center or heart failure. In chronic poisoning, the sick animal shows reduced eating or even refusal to eat, gradually becomes emaciated, has movement disorders and uncoordinated movements: long-term diarrhea with shed intestinal mucosa or blood in the feces, increased respiratory secretions, leading to difficulty breathing, and finally a drop in body temperature and death. Necropsy shows cyanosis of the visible mucous membranes, a large amount of mucous secretions in the oral cavity, pulmonary congestion and edema, and bronchi filled with foamy mucus. Parenchymal organs are congested and hemorrhagic, meninges are congested, and gastrointestinal mucosa is shed with hemorrhagic spots or hemorrhagic patches. Based on a history of contact with organophosphate pesticides and typical symptoms such as excessive salivation, constricted pupils, muscle tremors, and difficulty breathing, a preliminary diagnosis can be made. It is best to collect pathological materials for toxicological identification to establish a final diagnosis. To prevent this disease, organophosphate pesticides must be properly stored and used. When deworming animals, the dosage and concentration must be correctly mastered, care must be strengthened, and licking or biting each other must be strictly prevented. When using trichlorfon to treat internal parasites in animals, it must never be given together with alkaline drugs. When crops sprayed with organophosphate pesticides are used as feed, they should be thoroughly washed clean and first subjected to a safety test before they can be fed to animals. It is forbidden to feed fur-bearing economic animals with the meat carcasses and by-products of livestock, poultry, and other animals (rabbits, dead foxes, rats, fish, etc.) that died from organophosphate poisoning. For acute poisoning, rescue should be carried out quickly. For poisoning caused by oral ingestion of organophosphate pesticides, immediately use 2-3% sodium bicarbonate solution, 1-2% soda water, or 0.1% potassium permanganate solution (potassium permanganate cannot be used for 1605 poisoning) for repeated gastric lavage to remove unabsorbed poison, but if poisoning is caused by oral trichlorfon, alkaline solution must not be used for gastric lavage; instead, use 1:5000 potassium permanganate solution or physiological saline for gastric lavage. For symptomatic treatment, to relieve spasms, barbiturate can be injected subcutaneously (10% sodium isoamylbarbiturate solution), 10 mg per kg body weight for mink, and 30-50 mg per kg body weight for silver-black foxes. It is best to use it once every few days, for several consecutive times. Pralidoxime at 30 mg per kg body weight, diluted with 5% glucose solution and physiological saline, should be injected slowly intravenously, and acts rapidly. However, it must never be combined with alkaline drugs.
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Which pests can chloramidophos control? A detailed explanation of its scope of application
Which pests can chloramidophos control? Please introduce 30% chloramidophos emulsifiable concentrate, a new insecticide variety with independent intellectual property rights, capable of efficiently controlling a variety of pests, mainly the larvae of the rice leaf roller. Such as the striped stem borer, the yellow stem borer, the pink stem borer, the brown planthopper, leafhoppers, the cotton bollworm, the cabbage caterpillar, the beet armyworm, etc., low...
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