A management system for growing crops that is based on three principles that should be applied together and reinforce each other: minimum physical soil disturbance (no tilling); permanent soil cover with live or dead plant material (mulching or growing cover crops); and crop diversification in space and time (growing complementary crops together, and crop rotation). Herbicides are sometimes promoted as being part of conservation agriculture however, if conservation agriculture is to be truly sustainable, herbicides cannot form part of the system.
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