Control methods of Fusarium wilt of dragon fruit

Pitaya is a common fruit in our life, and Fusarium wilt is a common inhibition disease during planting, which will lead to gradual drying and death and great loss to fruit farmers. So what is the cause of dragon fruit wilt? How to prevent and cure it? Let's get to know it.

1. Symptoms of Fusarium wilt

After the occurrence of Fusarium wilt of dragon fruit, its stem nodes will lose water, fade to yellow and wilt, and then gradually dry up until the whole plant dies. If the environment is relatively humid, pink mildew layer will appear on the diseased plant. The disease first appeared on the branches in the middle and upper part of the plant, at the top of the stem node, with grayish-white irregular disease spots on the edges, and then gradually expanded downward to form sunken disease spots, and gradually dried up, and finally formed gaps or holes.

2. The regularity of the disease

Fusarium oxysporum wilt is caused by Fusarium oxysporum, which overwinters in the diseased body or soil. After the temperature rises in the next spring, the disease begins to be obtained, and then spread by Rain Water, invading from the wound of the plant and causing the disease. Rainy weather in early spring and early summer is conducive to the occurrence and spread of Fusarium wilt, if low-lying water in the garden, closed damp, a large number of pests are conducive to the occurrence of Fusarium wilt.

3. Prevention and control methods

It is necessary to clear the garden in time after harvest in autumn and winter, clean up the diseased branches and departments in time, and take them out of the field to burn or bury them deeply, so as to reduce pathogens, implement reasonable crop rotation, and reduce the occurrence of disease improvement. In addition, we should do a good job in orchard irrigation and drainage, apply sufficient base fertilizer, timely topdressing, choose mature organic fertilizer or farm fertilizer as far as possible, increase phosphorus and potassium fertilizer, improve plant disease resistance, strengthen plant adjustment, remove the top at the right time, and prevent lodging. In agricultural operations, do not hurt the roots, so as not to create conditions for the invasion of germs. In the growing period, the diseased plant should be pulled out in time, the diseased stem and old stem should be removed, taken out of the field and deeply buried, the chemical should be sprayed and propagated in the whole garden, or irrigated in the planting rhizome, the control effect is better.

The above is the introduction of the prevention and control methods of dragon fruit Fusarium wilt, hope to help you, want to know more related knowledge, please pay attention to us.