Which pesticides can be applied to vegetables?

Vegetables are a vital part of our daily diet, and their roots, stems, leaves, flowers, and fruits are all commonly consumed. Some vegetables are even eaten raw, which makes it even more important to ensure they are free from harmful pesticide residues. As the threat of pests and diseases continues to grow, the use of pesticides on vegetables has increased. However, not all pesticides are safe for use on edible crops. Using unapproved or banned pesticides can lead to contamination, posing serious health risks such as chronic toxicity or acute poisoning. Therefore, only approved pesticides should be used, and there must be a proper waiting period before harvest to ensure safety. (1) Pesticides that are strictly prohibited for use on vegetables include highly toxic substances like parathion, methamidophos, monocrotophos, carbofuran, 3911, 1059, 1605, methyl 1605, Suhua 202, chlorpyrifos, isopropyl phosphorus, trisphorus, zinc phosphide, aluminum phosphide, cyanide, fluoroacetamide, arsenic, chloropicrin, pentachlorophenol, dibromochloropropane, and 401. These chemicals are extremely dangerous to humans and animals, and they can enter the body through ingestion, skin contact, or inhalation, leading to severe acute poisoning. Additionally, some pesticides with high toxicity and long-term persistence are also banned. For example, mercury-based products, Saili San, and Xi Lisheng have a half-life in soil that can last up to 30 years. Their prolonged presence can cause cumulative damage to the nervous systems of both humans and livestock. Even low-toxicity but long-residual pesticides, such as HCH, DDT, chlordane, dieldrin, and toxaphene, are still banned because they are chemically stable, resistant to breakdown, and can accumulate in fat tissues over time, leading to chronic poisoning. (2) On the other hand, there are several approved pesticides suitable for use on vegetables. These include biopesticides, which are environmentally friendly and non-toxic to humans and animals. Examples include insecticide-toxin bacteria, 7216 bacteria, and Bacillus thuringiensis, as well as fungicides like DT. Low-toxicity, high-efficiency pesticides such as dichlorvos, trichlorfon, dichlormid, dimehypo, phoxim, marathon, fenvalerate, transfluthrin, dicofol, carbaryl, dimethoate, omethoate, acephate, campestris, fenthion, isoprophos, diazinon, phenazine, permethrin, and others are also permitted. For fungal control, there are low-residue bactericides like Trichoderma, carbendazim, chlorothalonil, thiophanate-methyl, benomyl, mancozeb, copper sulfate, and many others. Herbicides such as trifluralin, pendimethalin, paraquat, and others are also allowed for use on vegetables under strict guidelines. It's essential to follow label instructions carefully and observe the required pre-harvest intervals to ensure the safety of the produce. Always choose registered and approved pesticides to protect both consumers and the environment.

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"Color Doppler Ultrasound Scanner" is a high-definition black-and-white B-ultrasound plus color Doppler. Its main advantages are: it can quickly and intuitively display the two-dimensional plane distribution of blood flow; it can display the running direction of blood flow; it is beneficial to distinguish between arteries and veins; it is beneficial to identify vascular disease and non-vascular disease; it is beneficial to understand the nature of blood flow ; It is convenient to understand the phase and speed of blood flow; it can reliably detect shunt and regurgitation; it can quantitatively analyze the origin, width, length and area of blood flow. These ultrasound manifestations and parameters play a very important auxiliary role in the diagnosis of clinical diseases.

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