TOP GUIDELINES OF NPK 15 15 15 VIETNAM USES

● In keeping with different soil,for example,fertilizer made up of potassium sulfate is not well suited for paddy area and acid soil,fertilizer made up of ammonium ion will not be well suited for alkali soil,etc.An suitable supply of potassium has a optimistic effect on leaf, fruit and grain size. Fruit having an suitable potassium supply has hig