Monoammonium Phosphate


Product characteristics

Monoammonium Phosphate

  • Fully water-soluble, crystalline product
  • Low in chloride, sodium and other detrimental elements.
  • When high levels of phosphorus are required in combination with nitrogen: e.g. for root development at an early stage in the growing season
  • Increases availability of phosphorus naturally available in the soil due to an increased pH in the root zone by the ammonium-ion (NH4+)
  • Used for foliar feeding, fertigation and as an ingredient in NPK’s.
  • Compatible with most water-soluble fertilizers

 
 
 


Dosing instructions

G / 1.000 l stock solution P2O5 Total Nitrogen Ammonium Nitrogen (N-NH4)
In g / 1.000 l or ppm In g / 1.000 l or ppm In g / 1.000 l or ppm
100 61 12 12
130 80 16 16
160 98 19 19
190 116 23 23
210 128 26 26

The table above represents the amount of nutrients in the stock solution. The final concentration in the irrigation water depends on the amount of nutrients in the stock solution, the injection ratio as well as the amount of nutrients in the water used.

Dosing instructions | Fertigation

Crop Application date Total dosage in kg / ha Total dosage in ml / tree
Fruit trees (adult trees) As of start of fertigation until 4 to 6 weeks before harvesting 100 — 200 kg Subject to a.o. soil and climatic condition
Vineyards (adult table grapes) As of start of fertigation / early stage of bud opening until end of flowering period 50 – 200 kg Subject to a.o. soil and climatic condition
Vegetables As of planting until 3 to 4 weeks before harvesting. Depending of crop: leafy crops or fruit bearing crops. 100 – 250 kg Subject to soil and climatic condition
Potatoes As of start of fertigation until mid of tuber bulking stage 100 – 200 kg Subject to soil and climatic condition
Tomatoes As of start of fertigation until 1 month before harvesting 150 – 300 kg Subject to soil and climatic condition

Dosing instructions | Foliar

Crop Application date Dosage in kg / application* Concentration of spray solution (w/v)
Apple, pear 1 – 3 applications:
- End of flowering stage / early fruit enlargement
4 – 12 kg, depending on amount of water used
Peach 1 — 3 applications:
- From fruit growth until 25% of final
size of fruit
5 — 10 kg, depending on amount of water used 1.0% (w/v)
Vegetables In case of additional phosphate needs as of first vegetative stage until 4 — 6 weeks before harvesting 3 — 6 kg, depending on amount of water used 0.5 — 1.0% (w/v)

Packaging

Available in packages of 1.000 kg and 25 kg.


Function of Phosphorus

Phosphorus plays a major role in photosynthesis and respiration. As an ATP (adenosine triphosphate), phosphorus stores and transports energy within the cells of the plant and contributes to a better metabolism. Phosphorus is also present in RNA and DNA structures, major components of genetic information. In mature plants, seeds have the highest concentration of phosphorus. Shoots and root rips have a high metabolism and a rapid cell division and require phosphorus in large quantities. Phosphorus supports root development, flower initiation and seed and fruit development. In some plants, it can reduce disease. Phosphorus can also improve the quality of certain crops.


Deficiency of Phosphorus

Phosphorus deficiency symptoms are often hard to detect because they are not usually very distinct. Relative smallness and reduced growth compared to healthy plants are the best indicators. As a rule, plants suffering from phosphorus deficiency develop more slowly and are often mistaken for much younger plants because of their size. Other visible indicators of phosphorus deficiency can be a purple stem, petiole and leaves. These indicators are limited to corn, tomato, lettuce and all varieties of brassica. Brown veined leaves and a grey luster can be found on plants with severe Phosphorus deficiency.
Phosphorus-deficiency-on-tomato-leaf oilseed_rape_leaf2