How to prevent and cure jujube root disease? Control measures for jujube root disease

People who plant jujube trees know that jujube root disease is very serious, directly affecting the production quality and yield of jujube trees. Then, how do you know how to prevent jujube root disease? Jujube tree root disease prevention measures! I hope that I can help you better grow jujube trees.

First, the symptoms of jujube root disease

After the jujube tree was damaged, the leaves turned yellow, became smaller, the development was hindered, and the branches and leaves were sparse. This caused the whole plant to die. The rhizomes and root cortex of the diseased plants rot, and there are often white ring-shaped fan-shaped membranes between the cortex and the xylem. The xylem is white sponge-like and has a mushroomy aroma. At the same time, dark brown or black rhizomes were observed in the cortex, surface and nearby soil of the diseased root, and in the summer and autumn, clusters of small yellow mushroom fruit bodies were grown on the decaying roots and nearby ground.

Second, the pathogen of jujube root disease

The pathogen of jujube root disease belongs to the genus Basidiomycetes, the fruit body is cord-like, the cap is round, the center is slightly bulged, the light honey is yellow, the surface has light brown hairy small scales, the stipe is solid, yellow-brown. The upper part has a film-like fungus ring. The pleats are initially white and then reddish brown. The spores are oval and colorless, and the small mushrooms can be continuously grown on the roots of the fungus, the base of the diseased tree stem, the roots and the soil in the soil.

Third, the incidence of jujube root disease

The pathogen of jujube root disease often overwinters in the roots of the diseased tree or nearby soil with mycelium and mycelium. When the environmental conditions are appropriate, a small yellow mushroom can be formed, in which a large amount of spores are generated, which propagates with the airflow and invades from the wound or the stump. When the spores invade the tree and enter the root, the mycelium is formed in the root tissue, and the mycelium continuously extends into the root neck in the formation layer of the root, and then spreads to the main root and Other lateral roots. The mycelium and mycelium on the root of death can spread to the roots of nearby jujube trees. The robust jujube trees can resist the infection of honey fungus, and the jujube gardens with low topography, sticky soil, easy water accumulation or excessive irrigation are beneficial to the occurrence of root disease.

Fourth, the prevention and control measures of jujube root disease

1. Choosing jujube trees in low-lying land with low groundwater level is conducive to root growth.

2. Strengthen the management of water and fertilizer in jujube gardens, increase the application of organic fertilizers, and strictly control the amount of irrigation, so as not to accumulate water and water, enhance soil permeability, and promote the growth of jujube roots, which is conducive to the prevention of root disease.

3. Collect jujube pathogens (sweet yellow mushrooms) in time to reduce the source of disease infection.

4. Dig the isolation ditch around the diseased plant to prevent the spread of jujube roots on the jujube trees around the ditch. The root of the disease should be cleaned up and burned in time.

5. Prevent jujube freeze damage and mechanical damage, disinfect the wound, apply Bordeaux liquid protection, and prevent the invasion of mycelium (spore).

6. Disinfect the soil around the diseased plant and use roots of carbon disulfide to treat the soil, which can not only disinfect the soil, but also promote the large-scale reproduction of Trichoderma viride in the soil, so that the pathogens are weakened.