Regular consumption of fruits can supplement many trace elements needed in the human body. In the cultivation of fruit trees, some pests and diseases will inevitably occur. Most people choose to use pesticides , but there are some residues in the use of pesticides. This article will introduce how to use grass ash to control pests and diseases of fruit trees and reduce the occurrence of pesticide residues.
Prevention and control of blight and anthracnose fruit saplings are prone to blight and anthracnose, causing a large number of dead seedlings in severe cases. Use grass ash to spread the ridge, 30-50 kg per acre, can effectively prevent the occurrence of these two diseases.
The rust-preventing disease is cut into an annular groove of 50 cm wide and 60 cm deep at a distance of 50 cm from the fruit tree. The ash is applied into the ditch, the water is poured, and the new soil is pressed to have a certain control effect on the rust fruit disease.
Prevention of root rot The soil of the root of the fruit tree is opened. After the root is exposed, the skin on the root is scraped off with a knife. After 2-3 hours of drying, fresh ash is applied around the root and then the root is buried. After treatment, the root of the disease can be cured in 1-2 months.
Control the downy mildew from July to August after the fruit enters the expansion period, apply grass ash on the ground or ditch in the tree tray. It can also be sprayed with 4% of the ash ash leaching solution, that is, 100 kg of water per 3-4 kg of ash and ash. After immersing for 24 hours, the leaching solution is sprayed, and the effect is better.
Prevention and treatment of early defoliation disease is carried out by immersing 8 kg of grass ash and water 100 kg for 48 hours to prepare leaching solution. The liquid is mixed with bactericide and has certain preventive effect on early defoliation of fruit trees. When spraying the ash fertilizer on the foliage, use the clarified liquid after soaking to prevent the leaves from being contaminated.
In the peak period of the pear hibiscus from June to July, 3% of the ash ash soaking solution is sprayed on the pear tree, and the insecticide is sprayed for 3-4 hours to effectively control the pear hibiscus.
Control aphids with 10 kg of grass ash plus 50 kg of water, soak for 48 hours, take the filtrate spray, can effectively control the aphids on the fruit trees.
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