Different crop have different needs for phosphorus.
For example, beet, rape, lucerne and potato have high needs. Durum, silage maize, barley, pea, rye grass and sorghum have medium requirements. Oat, soft wheat, grain maize, soybean and sunflower have lower need for phosphorus. This means that farmers should apply different quantities of phosphate fertilizers to meet the specific requirements of their crops.
During the harvest, most of absorbed nutrients are removed from the field, which means the phosphorus in the soil has to be replenished not to impoverish soils. Otherwise, nutrient capacity of soils decrease.