What are the latest precautions for foliar topdressing of fruit trees
Topdressing of fruit trees is an indispensable management task in the process of growing fruit trees. When topdressing fruit trees, we should reasonably use the method of foliar topdressing to apply fertilizer. This supplements the nutrients fruit trees need and enhances their growth capacity. However, when carrying out foliar topdressing, there are many points that require our attention. So today, the editor has brought you the precautions for foliar topdressing of fruit trees. Let's take a look below!
1. Concentration control
When carrying out foliar topdressing, we should pay attention to reasonably controlling the application concentration according to various conditions such as the fruit tree variety, growth stage, fertilizer applied and weather. For example, when growing citrus trees, during the new shoot stage and young fruit stage, the concentration should not be too high, to avoid burning the leaves and fruit. When applying foliar fertilizer, pay attention to mixing as many agents as possible and appropriately adjust the concentration. Urea in particular: if the urea concentration is too high, it can very easily cause biuret poisoning in fruit trees, leading to undesirable phenomena such as yellowing leaves. Finally, reasonably select the agent according to the nutrients that need to be supplemented.
2. Spraying position
When spraying foliar fertilizer, we should also pay attention to the spraying position: spray not only on the front side, but also appropriately on the underside of the leaves. Spraying must be comprehensive and even. If the fertilizer residue cannot dissolve in time, the fertilizer should be filtered before spraying. Also pay attention to the use of fertilizers such as zinc and manganese; these metal substances cause very great harm to fruit tree leaves. So when spraying, adjust appropriately. Finally, when spraying micronutrient fertilizers, ensure their quality and fertilizer efficiency, improve the leaves' absorption capacity, and guarantee the effect.
3. Pay attention to temperature and humidity
⟦NL>When carrying out foliar topdressing on fruit trees, we should carefully observe the surrounding environment, especially temperature and humidity. The suitable temperature for applying foliar fertilizer should be controlled at around 20 degrees. Especially when entering high-temperature seasons such as summer, be sure to pay attention to the application time; do not carry out application during the midday high-temperature period. It should be done in the morning and evening, or in weather such as cloudy days, to promote leaf absorption of fertilizer and avoid pesticide damage to fruit trees. If spraying at noon, it can very easily cause leaf scorch, and in a high-temperature environment, the evaporation rate will also become faster, and the efficacy will therefore decline.4. Mixed spraying
When applying foliar fertilizer, it can be mixed and sprayed with agents such as regulators. This achieves the purpose of preventing and controlling pests and diseases and reduces labor costs. However, note that if the foliar fertilizer is Bordeaux mixture, it must not be mixed with elements such as phosphorus and iron, to prevent the formation of insoluble salts and cause the agent to lose its effect. Among them, many agents have many contraindications, so before use everyone must carefully read the instructions and must not use them blindly. Avoid unnecessary losses.
The above is a brief introduction to the precautions for foliar topdressing of fruit trees. Although foliar topdressing is important, everyone must not apply it blindly and should pay close attention. That is all for today's introduction. This article is for reference only. Thank you for reading and supporting.