What medicine is used for yellow spot of fruit trees?

When yellow spot infects fruit trees, it will cause large pieces of leaves to fall, and the fruit will be speckled and unable to store. What medicine does fruit tree yellow spot use?

What kind of medicine is used for yellow spot of fruit trees

Fruit tree yellow spot can be used alone or mixed with carbendazim, mancozeb, Bordeaux solution, oxime tebuconazole, oxime and so on.

II. Application of pesticides to yellow spot of fruit trees

1. Fruit-bearing tree Xiehua 2. 3. Unfruited tree spring shoot leaves were sprayed for the first time, and then sprayed 1-2 times every 20 days. The medicament uses 80% carbendazim wettable powder 800-1000 times liquid, or 80% mancozeb wettable powder 500x liquid, or 0.5% equivalent Bordeaux solution.

2. After pulling out the diseased leaves, the oxime tebuconazole and oximane were mixed and applied.

III. The harm of macular disease

Dozens or hundreds of spot diseases can occur on the leaves of the damaged plant 1, which hinders the photosynthesis of the leaves, weakens the tree potential, causes a large number of fallen leaves, and affects the yield to a certain extent. The branches did not shrink long after being damaged, which affected the expansion of the crown, and a large number of oil stains were produced after the fruit was killed, which affected the commerciality of the fruit.

Yellow spot disease can be divided into four types: fat spot macula type, brown round star type, mixed type (that is, fat spot yellow spot on one leaf, brown round star disease spot) and fruit symptoms.

The disease is caused by the infection of citrus coccidiomycetes in the genus Aspergillus.

The pathogen overwintered with mycelium in diseased leaves and fallen leaves. In the following year, the fruit of Chunzi released sporozoites to spread by wind, Rain Water and so on. The suitable growth temperature of the pathogen is about 25 ℃, and it is warm and superfluous from May to June, which is most conducive to the formation, release and transmission of sporozoites. Extensive cultivation and management, weak trees and incomplete clearing of the garden will aggravate the disease.

While using drugs to control the disease, we must strengthen the cultivation management, strengthen the tree potential and improve the disease resistance of fruit trees through the application of fertilizers.