Very soluble fertilizers like __ would be rapidly washed out of the soil and so should not be applied just before heavy rains.
The fertilizer 20:10:10 represents:
A ... is a substance that increases the fertility of the soil.
Salt
Fertilization
Fertilizer
Fertility
Advantages of natural fertilizers (manure) over chemical fertilizers are:
All are correct
Manure is cheap and readily available, unlike chemical fertilizers which are relatively expensive and scarce
Manure is not easily leached i.e. not easily washed out of the soil to streams and rivers. Chemical fertilizers are easily washed by rain water into streams, rivers and lakes causing water pollution
Manure does not affect the PH of the soil like some chemical fertilizers do especially when applied in excess
Leguminous plants do not need nitrogenous fertilizers because __.
