THE GREATEST GUIDE TO NPK 15 15 15 VIETNAM Là Gì

Considered one of the preferred soil fertilizer ratios in use is often a 15-fifteen-15. The numbers refer to the ratio of nitrogen, phosphorus, and potassium in parts for each million. Most of the time, Consequently you will discover fifteen units of nitrogen for every one unit Every of phosphorus and potassium contained within it.Sturdy stems pres