The Latest Prevention and Control Methods and Technical Key Points for Pests and Diseases of Winter Jujube

Winter jujube takes nearly a year from sowing to the final harvest, with sowing beginning in spring and maturity only occurring in winter. It has extremely strong adaptability and can adapt to various soils and temperatures. Although it has extremely strong adaptability, many diseases still occur during its year-long growth process. So what diseases occur in winter jujube? How should these diseases be handled? Details are as follows.

1. Black spot disease

Black spot disease is the most common disease in various planting areas, occurring every year, and the condition is becoming increasingly severe. Black spot disease mainly invades the leaves of winter jujube, and then begins to invade young fruit when young fruit appears. Infected fruit and leaves all develop a kind of black patch, and the flesh is slightly sunken and decayed. The source of the disease is mainly a kind of pathogen. The peak period of black spot disease is in summer, and summer happens to be a period of high temperature and abundant rain, an environment extremely favorable for the spread of the pathogen. Agents such as Kejunkang can be used for prevention and control.

2. Fruit shrinkage disease

The incidence of fruit shrinkage disease has been increasing in recent years, mainly causing harm to the fruit. After the fruit becomes infected, pale yellow disease spots appear on the fruit surface along with halos, and then they gradually sink, with the fruit skin wrinkled and lusterless. A temperature of around 25 degrees is the peak period for this disease. In the later stage of fruit shrinkage disease, insect pests are also produced. For example, pests such as stink bugs will suck and feed at the diseased areas, further harming the fruit. If winter jujube contracts this disease, insecticides and agents such as diniconazole should be mixed and applied. Fertilizing during the flowering period is the best stage for preventing and controlling this disease. The effect is also the most obvious.

3. Rotten fruit disease

The source of rotten fruit disease is mainly caused by the invasion of pathogens and fungi, and the peak period of onset is during the summer heat. High temperature and abundant rain will increase the number of rotten fruits. The main symptom of rotten fruit is varying degrees of decay on the fruit, accompanied by a foul odor, ultimately leading to fruit drop. This seriously affects yield. For rotten fruit disease, prevention should be the main approach. Before the peak period, agents such as thiophanate-methyl should be used for prevention and control. When summer arrives, pay attention to cooling and drainage in the orchard, and try to keep the fruit trees in the same environment.

4. Anthracnose

Anthracnose is a disease that many fruits are relatively prone to. When infection first occurs, yellow or brown spots appear on the fruit, and the spots gradually expand and finally merge to form a large patch. This causes the flesh and core to turn black. This disease mainly occurs on diseased fruits that have fruit shrinkage disease. Rainy weather makes it extremely easy to spread, and the disease begins in summer. The main approach is still prevention, with pesticides such as polyoxin sprayed in the months when the disease occurs for prevention.

The above four diseases are the diseases most likely to occur during the growth process of winter jujube. Of course, there are more than just these. For example, there are also bitter pit disease, canker disease, and so on. The editor has only listed several of the most likely diseases to occur. Other diseases with a relatively lower probability of occurrence should also be prevented and controlled in a timely manner. As long as it is a disease, it will harm the growth of the jujube tree and harm one's own economic interests. To learn more related information, please continue to follow Qinnong Network!