Guide: This year's market for fruit cultivation is not very satisfactory. Take my buddy for this year's winter peaches. I invested a lot of money and finally recovered the cost. It is almost no money. For this year, The fruit market caused the downturn, which was related to the amount of planting. Many people also hurriedly joined the army of planting. In the end, the amount of planting was very large, and there was a direct flooding, which led to low fruit prices. But for another year this year, For fruit growing, the market is still good, that is hawthorn. From this year, the area where hawthorn is planted has begun to expand. The biggest worry for growers is that the area is large, and the disease is naturally more. Take this "flower rot disease" "Speaking of it, we cannot ignore this disease.
First, understand the hawthorn flower rot
Hawthorn flower rot, also called leaf rot and branch rot, is a disease that scares growers. The target of this disease is the leaves, branches, flowers, young fruits of the hawthorn. It can be said that the goal is to appear in the spring, once it occurs when the hawthorn tree begins to grow in the spring, then it is undoubtedly an extinct disease for the hawthorn tree. As long as the disease occurs, don't talk about the production of hawthorn. Hawthorn flower rot causes farmers to reduce their yields by at least 30% or more, and some even reach 40% -50%. After all, the disease is not in the middle and late stages, mainly in the early stages, and the consequences are very serious. Hawthorn flower rot cannot be ignored.
Second, why is hawthorn flower rot prone to occur early?
The pathogen of hawthorn flower rot is hawthorn brown rot, a fungal disease belonging to the subclass Ascomycetes. In the spring, the pathogen of hawthorn flower rot will produce mycelia and conidia when the temperature is appropriate. The main latent target of conidia and conidia is mainly rotten fruit and dead fruit on hawthorn, especially when the winter weather in the first year is relatively dry, and in the next spring if there is more rain, new leaves will grow on the hawthorn tree. At that time, mycelia and conidia will invade the hawthorn tree from dead fruit and rotten fruit. Mycelia and conidia will form ascus discs after parasitizing on the fruit. In winter, they will dormant in the ascus discs in winter. Many places in the hawthorn park can be used as hiding places for ascites. It might as well be in the soil, fallen leaves, and stones. Therefore, the temperature and climate in spring are the main reasons for the occurrence of germs, the temperature is rising, and the increase in rainfall is the appropriate condition for germs.
Third, which parts of the hawthorn flower rot disease will be affected? What are the symptoms?