What types of pesticides are commonly used on vegetables?
Growing vegetables requires fertile soil, and they are also prone to pests and diseases. If measures are not taken in time, this will affect yield and quality. So,what pesticides are commonly used on vegetables?
1. What pesticides are commonly used on vegetables?
1. Herbicides: bentazone, quizalofop-p-ethyl, etc.;
2. For controlling fungal diseases: metalaxyl, thiophanate-methyl, carbendazim, chlorothalonil, mancozeb, triadimefon, triadimefon, etc.;
3. For controlling viral diseases: moroxydine, ningnanmycin, moroxydine·hydroxyadenine, etc.;
4. For controlling bacterial diseases: kasugamycin, agricultural streptomycin;
5. Insecticides: chlorpyrifos, thiamethoxam, imidacloprid, abamectin, etc.; growth regulators: gibberellin, ethephon, abscisic acid, etc.
2. How to grow pollution-free vegetables?
1. Environmental selection
The first task in cultivating pollution-free vegetables is to choose a good growing environment that meets the production requirements of pollution-free vegetables. The most important thing for the growing environment of pollution-free vegetables is to be far away from pollution sources such as urban areas and factories. Ensure good drainage and irrigation capacity, and that the water quality meets the planting requirements. The planting soil should be relatively deep and loose, with sufficient fertility and good structure. Control the soil area well according to the planting scale, and ensure that crop rotation can be carried out according to the varieties planted. Then do a good job of soil preparation, improve the natural environment, and create a good growing environment for the vegetables.
2. Planting management
Then we should choose a suitable planting variety according to the soil type and planting area, then select excellent seeds and disinfect the seeds. Control the sowing time and sow at the right time to improve the growth ability of the seedlings. Then do a good job of transplanting management according to the growth habits of the vegetables. Strengthen field management, carrying out a series of tasks such as cultivating and weeding, trellising and pruning. Control humidity well according to weather changes and provide ventilation. Specifically, it still depends on the vegetables' requirements for the environment, and adjustments should be made flexibly.
3. Reasonable irrigation
The intensity and frequency of irrigation should be adjusted reasonably according to the soil type and soil moisture. For example, sandy soil has relatively poor water retention, so it needs frequent watering; on the contrary, clay soil needs good drainage. Then irrigation should also be carried out according to the weather and the growth of the seedlings. Water more on hot days, and on the contrary, water less or not at all. If the leaves are bright and shiny, water less; if they are wilted, water more. However, no matter what kind of vegetable it is, it is not suitable to water at noon, to prevent the high-temperature and high-humidity environment from causing pests and diseases.
4. Fertilization methods
No matter what kind of vegetables are planted, sufficient base fertilizer should be applied. Base fertilizer is the key to ensuring the healthy growth of vegetables. The base fertilizer is mainly fully decomposed farmyard manure, but the type of fertilizer should also be chosen well according to the planted variety. For example, cilantro, lettuce, and others are not suitable for farmyard manure. Then when topdressing, although nitrogen fertilizer should be appropriately supplemented, attention must be paid to the amount, and it must not be excessive. Avoid excessive nitrogen fertilizer causing vegetables to grow leggy, reducing field ventilation, consuming too many nutrients, and also leading to reduced yield.
Vegetables are something we often eat, so it is best to use pollution-free cultivation methods. If pesticide application is needed, try to choose low-toxicity pesticides, and select the appropriate agent according to the variety and symptoms.