Matters needing attention in extra-root topdressing of fruit trees

Topdressing of fruit trees is an indispensable management work in the process of planting fruit trees. When topdressing fruit trees, we should reasonably use the method of extra-root topdressing. Supplement the nutrition needed by fruit trees and enhance the growth ability of fruit trees. However, in the process of extra-root topdressing, there are many things we need to pay attention to. So today, the editor brings you some points for attention in topdressing fruit trees outside the root. Let's take a look at it.

1. Concentration control

When we carry out extra-root topdressing, we should pay attention to reasonably control the application concentration according to the variety of fruit trees, growth stage, fertilizer application, weather and other conditions. For example, when planting citrus trees, in the new shoot stage and young fruit stage, the concentration should not be too high to avoid burning leaves and fruits. When applying foliar fertilizer, we should pay attention to mixing as many kinds of chemicals as possible and adjust the concentration appropriately. Especially urea, if the concentration of urea is too high, it can easily lead to biuret poisoning in fruit trees and yellowing of leaves. Finally, the medicament should be selected reasonably according to the nutrients to be replenished.

2. Spraying position

When we spray foliar fertilizer, we should also pay attention to its spraying position, not only in the front, but also on the back of the leaves. Spray should be comprehensive and uniform, if the fertilizer residue can not be dissolved in time, then the fertilizer should be filtered before spraying. Also pay attention to the use of some zinc, manganese and other fertilizers, these metal substances are very harmful to the leaves of fruit trees. Therefore, it should be properly adjusted when spraying, and finally, when spraying micro-fertilizer, it is necessary to ensure its quality and fertilizer efficiency, improve the absorption of leaves, and ensure the effect.

3. Pay attention to temperature and humidity

When topdressing fruit trees outside the root, we should pay attention to observe the surrounding environment, especially the temperature and humidity. The temperature suitable for foliar fertilizer application should be controlled at about 20 degrees. Especially when entering the high temperature season such as summer, we must pay attention to the time of topdressing, not at noon high temperature time. It should be carried out in the morning and evening, or in cloudy weather, to promote the absorption of fertilizer by leaves and avoid drug damage to fruit trees. If the spray is sprayed at noon, it is very easy to cause leaf burns, and in a high temperature environment, the evaporation rate will be faster, and the efficacy will be reduced.

4. Mixed spraying

Foliar fertilizer can be mixed with regulators and other agents during topdressing. To achieve the purpose of prevention and control of diseases and insect pests and reduce labor costs. However, it should be noted that if the foliar fertilizer is Bordeaux liquid, it should not be mixed with elements such as phosphorus and iron to prevent the formation of insoluble salts, resulting in the loss of the effect of the agent. There are many drugs that have many taboos, so you must read the instructions carefully before using them, and do not use them blindly. Avoid some unnecessary losses.

The above is a brief introduction to the matters needing attention in topdressing fruit trees outside the root. Extra-root topdressing is important, but we should not apply it blindly and pay more attention to it. That's all for today's introduction. This article is for reference only. Thank you for your reading and support.