DAP1846FAS
DAP is used as Phosphate fertilizer. It has an analysis of 18-46-0. Nutrients include P2O5
(46%) and
ammoniacal nitrogen (18%). DAP provides the correct proportion of phosphate and
nitrogen needed for
farming wheat, barley and vegetables. It is also applied in the early stage of fruit orchard
fertilization.

When applied as plant food, it temporarily increases the soil PH, but over a long term the
treated ground
becomes more acidic than before upon nitrification of the ammonium. It is incompatible
with alkine
chemicals because its ammonium ion is more likely to convert to ammonia in a high-pH
environment. DAP
has a high ammonium content and can cause germination injury if used in direct contact
with seed. DAP is
manufactured by reacting phosphoric acid and ammonia. It contains two ammonia
molecules. In alkaline
soil conditions, one of the ammonia molecules in DAP will revert to ammonia. DAP is alkaline
with a high pH,
exceeding 7.5. DAP is excellent for low pH or alkaline soils.