Buystar Extra NP 15-30 + 4 MgO is a microcrystalline fertigator characterized by total and immediate solubility, by a high phosphorus content, magnesium and sulfur and by the presence of RyZea, a natural biological activator that enriches the formulation of components capable of enhancing plant metabolism, soil-based processes and the nutritional value of the circulating solution. The elevated quantity of Phosphorus is important in stimulating root growth, flowering, fruit swelling, increasing the robustness of plant tissues, making plants less susceptible to harmful agents. Synergy with magnesium improves photosynthetic activity while sulfur unblocks soil nutrients and increases root absorption.