The latest cause of yellowing and death of peach trees

Peach yellowing is the most common disease in the process of peach planting, which not only affects the growth of peach trees, but also has a lot of effects on the yield of peach trees. So what are the reasons for the yellowing of peach trees? Let's take a look at the detailed introduction.

1. Disease

Root disease is an important nutrition leading to the yellowing of peach trees. Peach trees suffer from root cancer disease, white silk disease, root rot disease and so on, which will hinder the absorption of nutrients and water, resulting in tree weakness and serious plant death. In addition, canker disease in branches will hinder nutrient transport and lead to partial yellowing. With the occurrence of root and neck rot caused by freezing injury in winter, there will also be symptoms of plant weakness and yellowing.

2. Lack of fertilizer

Plant iron deficiency and nitrogen deficiency will cause yellowing of plants, in which the phenomenon of yellowing caused by nitrogen deficiency is relatively rare, and there are many reasons for iron deficiency. The planting density is large, the land area occupied by each tree is small, the roots are interspersed with each other, and the iron ions in the soil can not meet the absorption of the roots. In addition, due to the influence of soil pH, iron ions in neutral and alkaline soils are fixed by hydroxide ions to form insoluble iron hydroxide, which will not be absorbed by roots, resulting in iron deficiency in plants.

3. Unreasonable pruning

Overpruning will lead to yellowing after fruit harvesting. When the fruit is supplied with organic and inorganic nutrients before harvest, the root growth will be inhibited. After fruit harvest, the root system is in urgent need of leaves to improve organic nutrients, at this time, if the pruning is too heavy, more branches and leaves will be lost, resulting in less nutrients synthesized by photosynthesis, so the root system does not have sufficient vegetative growth and can not absorb more nutrients to return to the aboveground parts, resulting in yellowing.

4. Drug damage and fertilizer damage

Many fruit growers use pesticides improperly in the control of diseases and insect pests, which will lead to plant damage and yellowing, most of which are related to herbicides, such as glyphosate, paraquat and so on. In addition, the application of too much chemical fertilizer and less organic fertilizer during fertilization will lead to soil consolidation, serious loss of soil fertilizer and water, low content of organic matter, affecting the decomposition and release of soil nutrients, and also lead to plant yellowing. In addition, the variety of fertilization is wrong, the use of fertilizer from field crops on fruit trees will also cause yellowing and drying, such as the use of potassium chloride for peach trees, it will lead to root chloride poisoning.

The above is the introduction of the cause of yellowing and death of peach trees. I hope I can help you. If you want to know more about it, please follow us.