Soil Tech Notes
It is easy to say that all a farmer needs to do is add fertilizer and he would harvest enough to feed his family with some left over to sell. However, if he has no resources and has been unable to adequately feed his family he will not be worried about feeding both his and some neighbor’s family. In a Science article, Foley, et al. (2005) have indicated that many modern agricultural practices requiring large applications of chemical fertilizers and the diversion of water to marginal lands are unsustainable. Bunch (2002) has also pointed out that fertilization of tropical soils can even be counterproductive, depending on the crop and the soil.
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