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Though organic farmers use no chemical fertilisers, they successfully create a fertile soil by working into it crop residues and manure. |
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Organic farmers don't use chemical fertilisers; however, they build up soil fertility by working into it crop residues and manure. |
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Organic farmers manage to build up soil fertility very successfully by working in crop residues and manure, but no chemical fertilisers. |
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Because organic farmers avoid chemical fertilisers, they use crop residues and manure to build up high levels of fertility in the soil. |
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Even though organic farmers don't use chemical fertilisers, they build up soil fertility by working crop residues and manure into the soil. |