The high temperature and high humidity in the summer makes the crops grow vigorously, and pests and diseases also occur frequently. This makes the growers very annoyed. At present, the basic means of controlling pests and diseases are all pesticides. However, if the method of pesticides is not correct, the effects of pesticides will not be achieved at all. So what are the misunderstandings when pesticides are used?
Misunderstanding, a dozen drugs are not afraid of rain
Many farmer friends don't pay much attention to the weather forecast. When they went to the crops in the field, they had a heavy rain and wasted manpower, material and money. So pay attention to the weather before you fight. If it rains within 6 hours, don't plant pesticides.
Misunderstanding 2 the greater the concentration of pesticides, the better
Because pesticides are the most common pest control method, current crop pests and diseases are highly resistant. Sometimes pesticides are used but they have no effect. They can't control the spread of the disease, so increase the amount of pesticides and try again. This not only causes pesticide residues on the crops, but also causes great pollution to the soil and crops. A more serious situation is that the fight drugs will be combined with plant growth regulators such as bulking and chlormequat. If such substances are excessive, the crops will be extinctly reduced or reduced.
Misunderstanding three often mixes three or more kinds of agents for controlling various pests and diseases
Originally thought of doing this can save labor, save time, and save trouble, the result not only increases the cost of prevention and control, but also increases the difficulty of controlling the resistance of pests.
Misunderstanding four mismatch errors
Simply blindly mix all the products together, not paying attention to the order of the mixing leads to uneven fusion, and even react to produce phytotoxicity. In fact, although some pesticides can be mixed, due to the different dosage forms and solubility of different pesticides, it is necessary to pay attention to the order of mixing. Generally, it can be sequentially added in the order of wettable powder, suspending agent, water agent, and emulsifiable oil, and continuously stirred. For the blending of foliar fertilizers and pesticides, it is necessary to add foliar fertilizer first and then add pesticides. The order of mixing can not be saved and reversed.
Avoid the misunderstandings of these four pesticides, and you can have the effect after hitting pesticides. Otherwise, it is also a no-brainer!
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