What are the symptoms of potassium deficiency in peach trees

The planting area of peach trees in our country is very large. When planting peach trees, fertilization is very important. We should ensure adequate and comprehensive nutrition. Do not lack some nutrients, especially potassium, which is very important for the growth of peach trees. If the peach tree lacks potassium, it is very disadvantageous to the growth of the peach tree. So what are the symptoms of potassium deficiency in peach trees? Let's take a look at it with the editor.

1. Symptoms of potassium deficiency

Potassium deficiency in peach trees can cause symptoms in all parts of peach trees. The new shoots on the branches will be thin and long, and if the leaves are damaged, they will spread from the leaves in the middle of the shoots to the base and top of the plant. The first to show symptoms is the old leaf, in the early stage of potassium deficiency, the leaf edge will gradually wither and scorch, but the mesophyll tissue will not be affected. The main vein of the main leaf shrinks and curls, and finally brown patches appear around the leaf edge, and the patches gradually necrose. if you look at the back, the color is generally red, but the leaves generally do not fall.

It will also have an impact on peach blossoms, especially flower buds. If potassium is deficient, the number of flower buds will be reduced, thus reducing the flowering rate. If the fruit is deficient in potassium, the fruit is thin, the color is poor, the taste is light and sour, and the commercial value is very low. And the top of the fruit is also prone to decay, prone to physiological fruit drop. For the whole peach tree, potassium deficiency will significantly reduce the growth of peach trees, resulting in a decline in stress resistance and prone to various diseases. In serious cases, it will lead to the wilting of the whole peach tree.

2. Occurrence conditions

When planting peach trees, potassium deficiency is easy to occur if the soil is fine sandy soil, acidic soil or soil with little organic matter. And if too much lime is applied, the availability of potassium will be reduced. In addition, if nitrogen fertilizer is applied to the soil where potassium deficiency is not very serious, it is more likely to show potassium deficiency. Fruit trees are prone to freezing injury if they are deficient in potassium, but they are prone to magnesium deficiency after applying potash fertilizer, and if there is too much potash fertilizer, they are also prone to boron deficiency. If there is too much fruit on the tree, the potassium content in the leaves will be reduced, and it is easy to appear the phenomenon of potassium deficiency.

3. prevention and control measures

The root distribution of peach trees is not very deep, so the respiration is relatively strong, so we should turn the soil properly to improve the soil permeability. And combined with deep ploughing, sufficient organic fertilizer should be applied in autumn, and the amount of organic fertilizer per plant should be kept at about 45kg. Then, when peach trees sprout in spring, combined with watering, each plant is treated with an appropriate amount of plant ash. Then in the important periods such as flowering, leaf expansion and fruit expansion, it is necessary to properly spray plant ash or potassium dihydrogen phosphate to supplement potassium for peach trees to meet the potassium demand of peach trees. At the same time, we also need to do a good job of pruning, appropriate will be more bald branches, too dense, bouquet-like branches and other branches to rejuvenate the tree.

The above is a brief introduction to the symptoms of potassium deficiency in peach trees. That's all for today's introduction. This article is for reference only. I hope it can be helpful to everyone.