Soil fertility is maintained and enhanced by a system which optimizes soil biological activity and the physical and mineral nature of the soil as the means to provide a balanced nutrient supply for plant and animal life as well as to conserve soil resources.
(Soil fertility; is maintained; ) (Soil fertility; enhanced; by a system) (a system; optimizes; soil biological activity and the physical and mineral nature of the soil as the means)
Soil fertility Soil fertility a system
is maintained enhanced optimizes
by a system
soil biological activity and the physical and mineral nature of the soil as the means