What are the precautions for spraying foliar fertilizer? Keep these points in mind
When growing crops, no matter what kind of crop it is, fertilizer is needed to provide nutrients. And when fertilizing, it is not only about fertilizing the roots, but also about doing a good job of spraying foliar fertilizer. Foliar fertilizer is key to supplementing trace elements for crops, and when spraying foliar fertilizer, there are many points we need to pay attention to. Today, the editor brings you the precautions for spraying foliar fertilizer. Let's take a look below!
1. Pay attention to concentration
When we spray foliar fertilizer, just like fertilizing, we must pay attention to controlling the concentration of the foliar fertilizer. If the concentration of the foliar fertilizer is too high or too low, it is very unfavorable to its growth. If the concentration is too high, then after spraying onto the leaves, the heat generated is too great, which easily causes the leaves to be burned, affecting leaf growth, and in severe cases can lead to phenomena such as withered leaves and leaf drop. If the concentration is too low, then not only is the labor cost increased, but the nutritional needs of the crop also cannot be guaranteed. So when we spray foliar fertilizer, we should prepare a suitable foliar fertilizer according to the actual situation such as the fertilizer variety and crop type.
2. Spraying time
When spraying foliar fertilizer, we should pay attention to natural environmental factors such as temperature and humidity and wind. Because these factors have a direct impact on the effect of foliar fertilizer spraying. When spraying foliar fertilizer, try to do it when there is no wind, it is cool, humidity is relatively high, and evaporation is not great. Generally, it should be done before 9 o'clock and after 16 o'clock. After spraying, if it rains, then re-spray in time. Then we also need to understand the crop's nutritional needs according to its growth stage, and choose the nutrient the crop needs most for focused spraying to ensure the spraying effect.
3. Combine with fertilization
When spraying foliar fertilizer, we should also pay attention not to neglect traditional fertilization work. Moreover, the main focus should still be on fertilization, with foliar fertilizer as a supplement. Because compared with leaves, the roots of crops have stronger and more complete absorption capacity. And the demand for nutrient elements such as nitrogen, phosphorus, and potassium is also greater, so it takes at least ten sprayings of foliar fertilizer to reach the total amount of nutrients absorbed by the roots in one instance. Therefore, spraying foliar fertilizer cannot completely replace root fertilization, so we must pay attention to combining the spraying of foliar fertilizer with root fertilization work.
4. Spraying position
Finally, when spraying foliar fertilizer, we should also pay attention to the spraying position of the foliar fertilizer. Different crops have different growth capacities in the upper, middle, and lower parts of the plant, and the focus of growth also differs. And because the leaves and stems in the upper, middle, and lower parts of the plant have inconsistent metabolic vitality. Therefore, the ability to absorb nutrients varies greatly in strength. So we need to choose a suitable spraying position according to the crop being grown, improve the absorption and utilization rate of the foliar fertilizer, and ensure the nutritional needs of the crop.
The above is a brief introduction to the precautions for spraying foliar fertilizer. That's all for today's introduction. This article is for reference only, and I hope it can help everyone!