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Calcium ammonium nitrate contains nitrate nitrogen, has a very good quick-effect, can be completely water-soluble, after application can also be quickly absorbed by crops, but the nitrogen content is less than urea.
The biggest characteristic of Urea is high nitrogen content, up to 46%, and urea molecules are small, in nitrogen fertilizer is the most suitable to do foliar fertilizer. However, the nitrogen in urea is an amide state nitrogen, after the application of soil, it takes a certain amount of time to transform and to be absorbed by crops, this time will vary according to the temperature, generally in about 7 days, that is to say the nitrogen content in urea is relatively high, but the fertilizer effect is relatively slow and long.
Calcium ammonium nitrate and Urea, if both are used as nitrogen supplement, the fertilizer effect of calcium ammonium nitrate is fast and short, urea fertilizer is slow and long, calcium ammonium nitrate nitrogen content is not as urea, but absorption is much faster than urea.
Therefore, there is no better between the two. If you need to quickly supplement nitrogen, do not require the duration of fertilizer effect, then you can choose calcium ammonium nitrate, if you do not require the speed of fertilizer effect, only require more nitrogen, then choose urea is also very good.
Calcium ammonium nitrate and Urea, are good fertilizers, but to be used in the right time, the right way, will have the best effect, otherwise good fertilizer will not play a good role.
