TSP fertilizers are preferred as starter fertilizer for low pH soils in which where tea and hazelnut are cultivated and for areas where high-quality tobacco is grown. It can be used for all plants that are grown in the soils with low or moderate phosphorus availability. When phosphorus is applied less than required or applied phosphorus has low efficiency due to soil conditions, fine root development and plant growth are reduced and as a result of this, yield as well. Especially in winter time, color changes occur in old leaves (firstly appearing). These changed colors are observed as scarlet red and purple. When phosphorus playing important role in energy metabolism of plants is deficient, while yield decreases, quality is corrupted.