Root rot is a common disease of fruit trees, especially cherry trees. Most root rot diseases start from fibrous roots. At first, reddish-brown spots appeared around the fibrous roots, then slowly spread, and finally spread to the growing fibrous roots, and the disease slowly spread to the whole root until the whole root was necrotic.

Root rot of cherry trees is a fungal disease. After the occurrence of root rot, the symptoms on the ground will be obvious.

First of all, in the early stage of the disease, the leaves will turn yellow and wither, and slowly the leaves will fall off until the whole plant dies. In summer, if it suddenly clears up after continuous rain, it will lead to the sudden death of the diseased plant.

Causes of root rot:

When immature organic fertilizer is applied, too little organic fertilizer and too much nitrogen fertilizer will lead to weak tree vigor, and root rot is easy to occur when the tree vigor is weak.

When planting, the soil permeability is poor, too deep and the soil permeability is poor, which leads to the low root activity of cherry. In this case, it is easy to cause the invasion of germs and the occurrence of root rot.

Waterlogged cherry trees are neither cold-tolerant nor waterlogging-tolerant, and the roots accumulate water for a long time, which leads to hypoxia, which leads to the obstruction of root respiration, and most of the absorption roots turn black and die. In severe cases, the leaves appear dark brown and die.

Root rot caused by root pests.

Long-term freezing injury in late autumn or early spring will lead to late germination and flowering of cherries, and root rot is easy to occur when the roots are frozen.

Control methods of root rot of big cherry;

Strengthen orchard management, trim and shape in time, and pay attention to pest control;

Strengthen orchard drainage to prevent root rot caused by stagnant water.

Pay attention to the rational application of organic fertilizer when fertilizing;

Improve soil structure and enhance soil permeability;

Chemical control: irrigate the roots with biological bacterial fertilizer once a year. If the disease has occurred, irrigate the roots with biological bacterial fertilizer once, and irrigate the roots with rooting powder once after 10.