Prevent powdery mildew
For fruit trees with powdery mildew, dig a ring-shaped trench with a depth of 10-20 cm at a distance of 15 cm from the plant, and apply 10-20 kg of plant ash in the trench, and cover it with a thin layer of soil.
Prevent rust disease
For the diseased apple trees, dig a 50 cm wide and 60 cm deep ring-shaped ditch at a distance of 50 cm from the root diameter, and then apply plant ash as a base fertilizer into the ditch, pour enough water, and press up the new soil. can.
Plant ash for preventing root rot has a good effect on preventing root rot of pear, peach, hawthorn and other fruit trees. The method is to first rip off the soil at the roots of the fruit trees, remove the soil around the rotten roots, scrape off the diseased root bark, and cover each plant with 2.5 to 5 kg of fresh plant ash after drying for 24 hours, and then cover the soil.
Control aphids
Soak 10 kilograms of plant ash with 50 kilograms of water for 48 hours, and spray the filtrate to effectively control aphids on fruit trees.
Prevention and treatment of wilt and anthracnose
During the period of diseased saplings, plant ash is sprayed along the ridge, and the dosage is 30-50 kg per mu.
Prevent early leaf fall disease of fruit trees
Use 8 kg of plant ash and 100 kg of water to soak for 48 hours and filter to prepare an extract, which is mixed with a fungicide and has a certain preventive effect on early leaf fall disease of apples.
Note: Use the clarified liquid after soaking when spraying plant ash fertilizer on the leaves to prevent the leaves from being contaminated. Plant ash is an alkaline substance and cannot be used in saline-alkaline soil.
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