1. Apple rot disease
Apple rot is a major disease in the apple industry. The rot fungus is a weak parasitic bacteria, the tree is not weak and not infected, there is no wound and it is not infected, there is no frostbite and it is not infected, and the rot fungus is everywhere on the branches.
The outbreak of rot disease is closely related to the amount of fruit you hang and the size of your investment, to put it bluntly, the price of fruit has been low in recent years, or the investment is less and the tree is weak. Look at the people who have invested heavily in total nutrition, and there are still fewer orchard rot diseases.
Rotting bacteria infect in summer, latent in autumn, expand in winter, and rot skin in spring. What you see on the surface is rotten skin, but the actual spread of latent woody bacteria is not easy to see, resulting in treatment and recurrence. Therefore, it is necessary to enhance the tree potential, reasonable load, early prevention, early prevention and early treatment.
After the rot scar is scraped and cleaned, apply 300 times star sterilization, seal it with a healing agent after drying, or apply thick mud and wrap it with plastic cloth to seal it.
The prevention of rot disease adheres to two coats and two sprays, that is, the spring branch pole is cleared and the post-harvest autumn garden is sprayed with 4000 times the star of the whole branch pole for prevention and control, and the main rod is sprayed with 300 times star + 300 times silk moist prevention twice in the fall of the cortex period in June ~ July and the autumn incubation period of September ~ October.
2. Peach tree root rot
Root rot is a soil-borne disease, anaerobic bacteria, mainly caused by low soil organic matter content and impermeable compaction.
Due to the lack of soil organic fertilizer input for many years, long-term partial application of nitrogen fertilizer or a large number of elements, more water and less fertilizer, and the accumulation of soil compaction and impermeability caused by continuous accumulation, the root rot has been completely eradicated. In order to completely solve root rot, investment and efficiency are not proportional, forming a vicious circle.
Root rot enters the concentrated outbreak period in 4~5 months, or the prevention is the main effect, once the disease is treated, not only the leaves fall and the fruit falls, but the treatment cost increases, but it is not treated.
Treatment method, dig a pit to dry the roots for 2~3 days, the plant is equipped with 2~3 catties of biological enzyme mycin + half a catty of rot Kangbao, with 150 catties of water to penetrate into the root system, with an interval of 20 days, and irrigated 3 times.
Author: Dong Jianxi, lecturer of Zhongnong Le Fruit Science Research Institute
Source: Zhongnongle