The difference between ammonium bicarbonate and urea

In the process of crop planting, ammonium bicarbonate and urea are commonly used chemical fertilizers, which can effectively help the growth of crops. But many growers do not know the difference between their use, the following editor will explain the difference between them.

What ammonium bicarbonate and urea have in common

Ammonium bicarbonate and urea belong to nitrogen fertilizer, and have strong water solubility and volatility, so they need to be covered with soil and can not be spread directly on the ground. And in the decomposition process will also emit ammonia, if used as a fertilizer is very easy to cause seed burning, if directly used in the leaves, then the leaves will also be burned.

II. The difference between ammonium bicarbonate and urea

1. the speed of fertilizer effect is different.

Ammonium bicarbonate is a kind of quick-acting fertilizer, while urea is a medium-speed fertilizer. The fertilizer effect of ammonium bicarbonate is faster than that of urea, and the conversion rate is shorter after use. The transformation rate of urea in soil is relatively slow, and it generally takes about 7 days after use to be absorbed, so if you want to achieve faster fertilizer effect in topdressing, it is best to use ammonium bicarbonate.

2. Whether it can be absorbed and utilized directly

After ammonium bicarbonate is used in soil, it will exist in the soil in the form of ammonium nitrogen and can be directly absorbed by roots, but urea needs to be transformed into ammonium carbonate after a period of time after it is used in soil. before it can be absorbed and utilized by crop roots. Therefore, in the use of nitrogen fertilizer, you need to use it 5-7 days in advance.

3. There is a great difference in fertilizer effect among different temperatures.

The decomposition rate of ammonium bicarbonate is affected by temperature. The higher the temperature is, the faster the decomposition rate is, the greater the fertilizer efficiency loss is. When the temperature is lower than 20 degrees, its volatilization is very small. When urea is about 10 degrees in the soil layer, it takes 7-10 days to transform. The lower the temperature, the longer the conversion time. So it is better to use ammonium bicarbonate than urea to use nitrogen fertilizer in winter and early spring.

4. The wastage rate is different.

After the application of ammonium bicarbonate, ammonium nitrogen can be very stably absorbed by soil particles, and it is not easy to lose fertilizer effect with water. After application, urea will dissolve in the soil solution in the state of molecules, which is not only not easy to be broken by the soil, but also will be lost with water.

The above is the introduction of the difference between ammonium bicarbonate and urea. I hope it can help you. If you want to know more about it, please follow us.