FIELD OF APPLICATION Gröna Skog is used for nutrient irrigation in forest plants and other plants where vegetative growth is desired. WHY SHOULD I USE MONOAMMONIUM PHOSPHATE Phosphorus is an important building block as it is part of cell membranes and DNA. It is also part of the molecule ATP (adenosine triphosphate), which is needed for all energy-consuming processes in cells. As phosphorus is often difficult for plants to absorb through their roots, especially at unfavourable pH values and low temperatures, foliar fertilization is a good way to supplying phosphorus. There are many varieties of phosphorus fertilizers with ammonium, potassium, magnesium or calcium to choose from. Plant sap analysis is a good tool to determine which substance besides phosphorus is most needed by the plant.