26 1月 2018

MAIN DIFFERENCE BETWEEN TWO TYPES OF DIAMMONIUM PHOSPHATE

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MAIN DIFFERENCE BETWEEN TWO TYPES OF DIAMMONIUM PHOSPHATE

Normally there is two tyeps of diammonium phosphate in agriculture fertilizer industry.

There main difference is caused by the process and material.

They are obviously different from the apperaence, 18 46, granular, and in brown color. 21 53, crystal, and in white color.

MAIN DIFFERENCE BETWEEN TWO TYPES OF
DIAMMONIUM PHOSPHATE
DAP
Type
RAW
MATERIAL
NUTRITION
CONTAINS
SOLUBILITY HEVEY
METAL
SOIL
FRIENDLY
FOLILAR &Drip USE RELEASE SPEED
18-46-00 wet process phosphate acid 64 min Obviouse Impurities High No No SLOW
21-53-00 purified phosphate acid 74 min 100% water soluble Low Yes Yes QUICK
1, The root difference of these two items comes from the raw material. 21-53-00 type use purified phosphate acid, obviously, purified phosphate acid is more complex to produce, so the cost could be higher. This purification process, makes the 21-53-00 contains less heavy metal and other impurities. So that the 21-53 is soil friendly, and cause no damage to the mother earth. In this reason, the 21-53-00 can by used as foliar fertilizer, which is impossible for 18-46-00.

2, 18-46-00 is often used as base fertilizer in large quantity, as a  result, the fertility of the soil going down and the heavy metal contain is going high, which is not a environmental sustainable solution.
Nowadays, more and more countries realise this problem of 18-46 and grandually reduce the use of 18-46, meanwhile encourage the farmers to use 21-53 as a replacement.

3, To the application, 18-46 is mainly used as the base fertilizer or basal dressing, it used to provide the macro nutrients needed in the WHOLE period of the crops. So, it is used in large quanitty. But due to the diversity of the soil and climate conditions, the absorption of nutrients is different. So, in many cases, even the farmer use a large amount of 18-46, the crops stills performs the lack of Phosphorus.
And also, 18-46 is slow release type. the release is gradually increase of decrease according to the temperature, wet, or other conditions. Some certain period of the growing of crops needs more nutrients, like Mango tree, the sapling period needs more phosphorus than other periods. In this period, if you dont supply Phosphorus quick and fast, the Mango tree will suffer from a bad rooting system.
In this case, 21-53 is needed to supply phosphorus by foliar or driping, quick and fast.
In clusion, 18-46 is a solution for all time.  but 21-53 can provide with a Precision strike solution.

 

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