|Chemical Name||Mono ammonium phosphate|
Nitrogen and phosphorus present in every molecules|
|Quality & Handling||Partical size 1.2-1.5 mm Crystalized size.
Bulk density 1.8 grams per mole.|
Blends with most other NPK products.|
- MAP is a high analysis source of phosphorus.
- A cost effective crystallize product.
- Good handling characteristics.
- The nitrogen in MAP is in the Ammonical form, which resists leaching and is a slower release form of nitrogen.
- The product has an acid reaction in the soil which can be an advantage in neutral and high pH soils. Therefore MAP is used in preference to DAP on alkaline soils.
Ammonia gas is reacted with phosphoric acid, to form a pure white crystalized dried and screened.
Storage and handling
- Will store freely in shed storage for extended periods with little concern about moisture 0.5%.
- Covering with a tarp will greatly reduce any moist air uptake.
- The use of augers may damage the fertiliser and increase any handling problems.
- Do not leave exposed to moist air.
- Either fill or empty (completely), the drill or air-seeder fertiliser box overnight.
- Raise the equipment tynes from the soil to stop moisture moving up the tubes.
- For sowing there is little risk of affecting germination, even at high rates. As a general rule, a maximum of 20kg/ha of nitrogen at seeding of cereals should be used.
- When applying MAP, the fertiliser should be banded 5cm away from the seed, either below or to the side. MAP is low in sulphur (1%). It is not recommended for high sulphur requiring crops such as canola, unless blended with sulphate of ammonia or other sulphur source.
- Do not store in silos.