In pure nitrogen fertilizer, urea is a neutral organic nitrogen, and it is also a nitrogen fertilizer that is very suitable for foliar fertilizer . We use more in agriculture and can quickly participate in the nitrogen metabolism of economic crops. What problems should we pay attention to when urea is used as foliar fertilizer? Can

urea be used as foliar fertilizer?

The main results are as follows: 1. urea chemical stability, soluble in water, small molecular form, can enter the leaf cells, and urea is mainly nitrogen, can be calculated according to crop needs. Therefore, many farmers believe that among all types of nitrogen fertilizers, urea is an ideal foliar fertilizer, and it is used more and more frequently.

2. Rapid absorption. In the early stage of crop growth, especially some green leafy plants, such as the demand for nitrogen elements, and soil fertilizers are not only easy to damage the root system, but also slow in absorption and conversion rate. Ordinary granular fertilizers cannot be directly absorbed after entering the soil. After a week of transformation, they can absorb elements when entering the root system, which can also be understood as decomposition. It is particularly suitable to spray urea on the pages of crops that require nitrogen deficiency.

What problems should be paid attention to when urea is used as foliar fertilizer?

1. Urea is a pure nitrogen fertilizer, which can only provide nitrogen for crops, not omnipotent, and cannot replace other fertilizers. This is the first thing we should pay attention to. It can be applied only when crops need to supplement nitrogen.

2. When urea is used as a foliar fertilizer, you must pay attention to the concentration. The concentration is too high, easy to cause fertilizer damage. I grow apples, and I usually use 0.3 percent concentration on apple trees. Other crops choose the appropriate concentration according to the actual situation.

3. Urea can be applied as foliar fertilizer. Like other foliar fertilizers, attention should be paid to the spraying time. Generally, the spraying effect is better in the morning and evening. Fertilizer damage is easily caused during spraying during high temperature working hours at noon.

and above are the contents of how to use urea as foliar fertilizer and what problems should be paid attention to. I hope it will be helpful to you!