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1. The advantages of ChoiceChem MAP
lFully water-soluble
lConsists of 100% plant nutrients
lHighly-concentrated source of phosphorus for plants (61% P2O5 / 27% P)
lFree of chloride, sodium and other detrimental elements for plants
lModerately low pH (safer and less corrosive compared to urea phosphate)
lSuitable for the fertigation, foliar application and production of fertilizer blends and nutrient solutions
Double benefit: Not only that MAP is an efficient source of phosphorus, it also facilitates plant uptake of the phosphorus naturally present in the soil. This is due to the ammonium (NH4+) in MAP, which lowers the pH in the root zone and thus enhances phosphorus availability.
2. Chemical Analysis
Component | Range | Typical |
Main content | 99%min | 99.2% |
P2O5 | 61%min | 61% |
NasNH4 | 11.8%min | 12% |
Moisture | 0.2%max | 0.2% |
Insolubles | 0.1%max | 0.1% |
PH Value | 4.4-4.8 | 4.6 |
As | 0.0003%max | 0.0003% |
Pb | 0.001%max | 0.001% |
F | 0.002%max | 0.002% |
3. Application
Fertilizer | l It is a widely used source of P and N, it has the highest P content of any common solid fertilizer. |
Non Agricultural Uses
| l It is used in dry chemical fire extinguishers commonly found in offices, schools and homes. The extinguisher spray disperses finely powdered MAP, which costs the fuel and rapidly smothers the flame. |
4. Transportation Information
DOT Classification: | Not a DOT controlled material. |
U.N. | Not applicable. |
Packing Group: | Not applicable. |
5. Storage & Handing
l Keep Mono Ammonium Phosphate in a tightly closed container, stored in a cool, dry, ventilated area.
l Avoid Mono Ammonium Phosphate against physical damage.
l Isolate Monoammonium Phosphate from incompatible substances.
l Containers of Mono Ammonium Phosphate may be hazardous when empty since they retain product residues (dust, solids); observe all warnings and precautions listed for the product.
6. Packing
In 9kg pp bags
7. Application Recommendations
ChoiceChem MAP is recommended for use at the beginning of the growing season, because phosphorus availability is crucial for the establishment of root system at this stage, also it can serve as a high quality source of phosphorus also during other stages of the growth cycle.
Because of unique product characteristics,ChoiceChem MAP can be applied through any irrigation system and on any growing medium. Unlike phosphoric acid,ChoiceChem MAP is moderately acidic. Therefore, it is not corrosive to fertilizer pumps or to irrigation equipment.
(1). Compatibility
MAP is compatible with most water-soluble fertilizers, except for fertilizers containing calcium (Ca++) or magnesium (Mg++). To apply MAP in combination with calcium or magnesium fertilizers, use two fertilizer tanks. If only a single fertilizer tank is available, apply those fertilizers at different times.
(2). Quantitative Nutrigation
Each kilogram of MAP in the tank provides 610 grams of phosphorus (P2O5) and 120 grams of ammonium-nitrogen (N-NH4). Example: from initial establishment to flowering, open-field grown tomatoes require phosphorus at a rate of 1.5 kg P2O5 per hectare per day. To provide this, apply MAP at a rate of 2.5 kg per hectare per day. This will provide also 0.3 kg nitrogen per hectare per day. To complete nitrogen and potassium requirements, apply ammonium nitrate and K (potassium nitrate).
(3). Proportional Nutrigation
The phosphorus concentration in the irrigation water depends on the quantity of MAP in the tank mix, and on the injection ratio. Use the following table to calculate the quantity of MAP and the injection ratio needed to reach a given concentration in the irrigation water.
MAP | Nutrient concentration (ppm, g/1000 litre) | ||
(g/1000 liter water) | N | P2O5 | P |
100 | 12 | 61 | 27 |
110 | 15 | 79 | 34 |
135 | 17 | 90 | 40 |
180 | 22 | 112 | 50 |
225 | 44 | 225 | 100 |
(4). Foliar Feeding
Foliar spray with MAP is effective in supplying phosphorus whenever quick response to deficient plants is required. It should be considered a supplemental method to soil applied phosphorous. The concentration of MAP solutions can be increased according to leaf age.
On young leaves, spray concentration of 0.5% MAP is recommended in most crops. On mature leaves and more tolerant crops higher concentration (1.0% or more) may be applied.
MAP is compatible with most commonly used pesticides and fertilizers. However, it should not be mixed with calcium or magnesium fertilizers. It is advisable to confirm compatibility of your intended spray-mix by preparing a sample of the spray materials at their recommended concentrations in order to rule out the possibility of a detrimental cross reaction. This mixture should be sprayed onto small area p
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