There are situations in which urea is of no use, but does cause some harm to the crops.
Gardeners use urea throughout almost the entire season, especially in the spring, when plants need nitrogen more.
Mistakes when using urea
1. Low temperatures and unheated soil. When it is cold outside, the fertilizer is not absorbed by plants. Nitrogen is contained in the amide form, which is not available for planting. In the cold, the process of conversion into ammonium and nitrate forms slows down significantly. Therefore, gardeners do not recommend rushing to add urea.
2. Without burying in the soil. With this method of application, some of the nitrogen will evaporate. First, the fertilizer is scattered, and then covered with a layer of soil (4-5 cm). Or, initially, grooves are prepared into which urea is poured.
3. Do not mix with superphosphate in advance. After some time, the mixture will cake and it will be difficult to spread it on the ground. Therefore, gardeners recommend mixing the fertilizers immediately before use.
4. Another mistake is that gardeners pour urea into the holes and do not cover it with soil. As a result, the roots of the plants get burned. This will at least slow down the development of the plantings, and in some cases, urea can cause the death of the plants.
5. The main time for using urea is spring and early summer. In other cases, it is used when plants lack nitrogen and turn yellow prematurely.
If you use urea throughout the season, the plantings may start to "grow fat", for example, tomatoes. In this case, the plants will build up green mass, but the harvest will be very small.
