Symptoms and control of dry rot of jujube

Dates have rich nutritional value, in our lives is a relatively good tonic, has the effect of nourishing blood and beauty. Jujube planting in our country also has a relatively mature technology, but planting jujube improper management will suffer from many diseases, Xiaobian today to talk about dry rot is one kind. Dry rot can seriously harm fruit tree growth and lead to a substantial decrease in yield. Xiao Bian brought the symptoms and prevention methods of jujube dry rot today. Let's take a look together!

1. Symptoms

Dry rot mainly damages branches of fruit trees. Round dark spots appear on the main branches of adult trees, and the edge of the spots is dark. The diseased part is convex, easily torn off by hand, and relatively moist, and will gradually dry out in the later stage, and the diseased part is depressed. This is only one symptom, and another is that it occurs in young and adult trees, usually after freezing damage. Purple spots will appear on the branches, and then begin to crack, water shortage symptoms, uneven surface, spots will gradually expand, disease young trees will die quickly.

2. Prevention and control methods

Strengthen management: strengthen orchard management is the most important, after harvest to orchard base fertilizer, base fertilizer to reduce the proportion of fertilizer, enhance the content of farm manure. In particular, it is necessary to control the amount of nitrogen fertilizer to prevent excessive nitrogen fertilizer from causing excessive growth of jujube trees, which is not conducive to nutrient return of trees. Improve the resistance of trees, strengthen disease resistance, timely clean up fallen leaves, fallen fruits and sick bodies in orchards, prevent the breeding and transmission of pathogens, and reduce the incidence rate.

reduction of pathogenic

In winter, we should do a good job in clearing the orchard in time, and clear all the fallen leaves out of the orchard for treatment. Many friends will turn all the fallen leaves into the soil as fertilizer. In fact, although it increases the organic matter in the soil, it also provides conditions for the growth of bacteria, so we still have to clear it out of the orchard. In autumn and winter, the tree body is sprayed with medicines such as stone sulfur mixture to improve the low temperature adaptability of jujube trees. It prevents the phenomenon of freezing injury during winter, indirectly causes dry rot, and can also effectively kill insect eggs.

training and pruning

Jujube tree is a kind of big tree fruit tree, so it is very important for us to carry out shaping and pruning in the planting process. Reasonable pruning can not only enhance the growth of tree body, but also improve the permeability of orchard and strengthen the utilization rate of light, because if the tree body grows too weak, it will make the invasion of germs take advantage of. It is beneficial to flower bud differentiation of fruit trees and reduces disease incidence. Proper thinning of flowers and fruits can effectively improve yield and ensure quality.

The above is a brief introduction to the symptoms of dry rot and prevention methods. Dry rot is very harmful to trees and can even rank first among pests. It is something we must pay attention to in the planting process. We must hope to plant jujube trees with high yield and high quality in order to maximize our economic interests. Therefore, we hope that we can manage orchards well, not only dry rot, but also reduce the incidence of various diseases and insect pests.