1. The scientific use of fertilizers To increase agricultural productivity can be divided into two major groups
of chemical fertilizer that contains elements of the plant such as nitrogen (N), phosphorus (P) and potassium posts. (K)
when used for a long time will make the soil. With high acidity unsuitable for agriculture
may be other factors. To get involved is Planting the wrong way, resulting in soil degradation occurs. The other
natural resources as well as the earth.
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