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Compiled by Isabel Carter. Soil used for growing crops must have plant nutrients and organic matter added in order to maintain the fertility and quality of the soil. Soil which is well cared for will continually produce good yields. If plant nutrients and organic matter are not added, soil will become exhausted after a few years, and yields will drop. Chemical fertilisers will add plant nutrients, but are expensive. The methods on this page are inexpensive and will add both plant nutrients and ...
1991
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