Root rot first open the roots of the roots of the fruit trees, exposing the roots and then scraping off the diseased skins of the roots with a knife, airing the roots for 2-3 hours, burying the fresh vegetation around the roots of the roots, and finally covering the roots with the soil. The treated roots can be cured within 1-2 months, and new roots can be grown to normalize the growth and development of fruit trees. It should be noted that ash is an alkaline substance and cannot be used in saline-alkaline soils.
After the fruit of the downy mildew enters into the expansion period, it is applied on the ground to apply the plant ash or ditching in the tree tray. It is also possible to use 4% of the ash leaching solution for foliar spraying.
The early defoliation disease uses 8 kilograms of ash to soak the water for 100 kilograms for 48 hours to filter into a leachate. The mixture is sprayed with the fungicide to prevent and control early defoliation of apple. When spraying foliar ash to the foliage, the soaked clear liquid should be used to prevent the leaves from being contaminated.
Rust on diseased apple trees, dig 50 cm wide and 60 cm deep around the roots at a distance of about 50 cm, and then apply ash to the ditch as a basal fertilizer, pouring enough water to cover it. New soil can be removed.
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