THE ULTIMATE GUIDE TO NPK 40 40 40

Extra specifically, the 1st amount ("N price") is the percentage of elemental nitrogen by fat from the fertilizer; that is, the mass portion of nitrogen times 100. The next number ("P value") is The share by excess weight of phosphorus pentoxide Pيلعب النيتروجين دورًا حيويًا في تشجيع نموّ أوراق الأشجا�