Best prevention tips for crop diseases
People have eaten for the sky. From ancient times to the present, farming is the source of people's life. Do you know the best prevention tips for crop diseases? Welfare is here, today Hui Nongwang Xiaobian specializes in sharing the "the bottom of the pressure box", the following is the best prevention tips for crop diseases, and quickly learn!
The best prevention tips for crop diseases:
(1) Foliar spraying - feeding mother liquid to prevent disease
Method
The granules were ground and soaked for 10 minutes, and the leaves were sprayed according to a dry weight of 1:400.
2. Principle
No mistake, it is the most common digestive drug in our pharmacy - the mother-in-law. The mother-in-law is essentially a dry yeast tablet. The antagonism between the fungi is used to transplant the yeast on the leaves before the disease occurs, so that the spore germination of the harmful bacteria is inhibited by the yeast, which can effectively reduce the spore germination of harmful bacteria. Probability, thus playing a health care role for plants.
The mother-in-law can effectively prevent a variety of fungal diseases such as anthrax and downy mildew, and the period of protection in the protected area can reach 7 to 10 days.
3. Precautions
Try to use pure yeast to eat the mother, do not use the compound food mother tablets. Foliar sprayed food should not be mixed with fungicides.
(2) Foliar spraying - grass ash leachate to prevent disease
Method
Place 2 two ash in 15 kg of water, stir well for about 10 minutes, then let stand, take the supernatant and filter and spray with a spray.
2. Principle
Most of the optimum pH values ​​for spore germination are below 6.5. For example, the optimal pH for spore germination of cucumber downy mildew is 4.0~6.2, and the germination is strongly inhibited when the pH is higher than 7.5.
The ash leaching solution is alkaline, which can inhibit the germination of the spores to some extent, and the mineral elements contained in the ash extract can provide mineral nutrition for the crops.
According to this principle, the blade sprays an alkaline solution such as baking soda or ore source humic acid potassium to have the same effect.
3. Precautions
Try to use straw ash. Single use.
(C) skillfully use aspirin - improve disease control effect
Method
The aspirin was formulated into a 1500-fold aqueous solution, and then other fungicides were added to prepare a mixed medicament spray. 2. Principle
The main component of aspirin is acetylsalicylic acid, which is an important signal substance in plants. It can induce plant-derived disease-causing substances, has a strong synergistic effect on fungicides, and also has a certain bactericidal effect on itself. effect.
3. Precautions
It is best to use a combination of fungicides, and the effect of single use is not satisfactory. It is enough to use about three crops per season, and long-term frequent use will bloom or even prematurely decay.
Hui Nongwang Xiaobian believes that crop cultivation is important for prevention of diseases, and the above methods can be used to reduce losses during the high-yield season, and growers should hurry to practice to avoid disease losses!
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