Three diseases in the roots of fruit trees

In recent years, due to improper fertilization or improper management, root diseases of fruit trees have generally occurred, causing great losses to farmers, and the correct treatment measures for fruit trees with root diseases have become an urgent matter.
In general, the occurrence of root diseases in fruit trees is mainly caused by three factors: one is the infection of pathogens, the other is the weakening of fruit trees, and the third is the deterioration of the soil environment in the rhizosphere, and harmful microorganisms occupy the dominant position. Therefore, the treatment of the diseased fruit trees must also take measures in response to these three aspects. It cannot rely on a single method.
First of all, we must solve the problem of root infection of fruit trees. On the diseased fruit trees, the main root of the disease should be clearly exposed and painted with a bactericide. The selected bactericide should be a drug that has a targeted effect on soil-borne pathogens, such as "hydantoin", and can also be used as a broad-spectrum bactericidal pesticide, such as copper preparations and iodine preparations. It should be reminded that the use of "azole" pesticides is not recommended when root sterilizing fruit trees. Because these pesticides have a certain inhibitory effect on crop growth, they have undesirable side effects on fruit trees that are already growing poorly.
After sterilizing the roots of fruit trees, it is necessary to adjust the growth potential of the debilitating fruit trees to promote their development. It is possible to use growth regulators that promote the growth of fruit trees as a whole, such as “Butuo”, or to use chitin preparations that have significant growth promoting effects on the roots of crops. It is also possible to mix the two. For the poorly rooted fruit trees, in order to maintain their overall growth, they must be recharged from the foliage, and potassium nitrate can be sprayed many times a year, either for nitrogen or potassium. The potassium nitrate spray concentration is 0.3%. At the same time the root should pay attention to the application of calcium fertilizer. Calcium has the obvious effect of promoting the growth of fruit tree roots.
The rhizosphere soil environment of diseased fruit trees is often very poor, and harmful microorganisms occupy a dominant position, which is an important reason for root disease of fruit trees. Therefore, after sterilizing the roots of the fruit trees and irrigating the growth regulators, high-quality microbial agents or microbial organic fertilizers (such as EM or bacterial agents containing a large number of spores) should be further applied to make beneficial bacteria account for the soil. Position, creating a dominant position, creating a good soil environment for the root growth of fruit trees.
After taking these measures in turn, most diseased trees can resume normal growth.

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