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- W1973261792 abstract "ABSTRACT This paper examines the soil fertility management practices of smallholder fanners in north eastern Zimbabwe and investigates whether mixed farming systems like these are sustainable. To maintain crop production, farmers used inorganic fertilizers and a variety of locally-derived fertilizers: manure, termitarium soil, crop residues, woodland litter, compost and household waste. On average, locally-derived fertilizers provide about 25 kg N ha−1 yr−1 and 65 kg N ha−1 yr−1 for fields and gardens, respectively, indicating the importance of gardens as a focus for soil management. Farmers achieve target yields without the high application rates recommended by the extension service, provably because of the positive interactive effects of applying inorganic and organic fertilizer. Current yields on these nutrient-poor sands cannot be maintained in the absence of the inorganic inputs, thus sustainability is threatened by rising human populations and the recent massive increase in fertilizer prices." @default.
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- W1973261792 date "1997-12-04" @default.
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- W1973261792 title "A Survey of Soil Fertility Management in Small-Scale Farming Systems in North Eastern Zimbabwe" @default.
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- W1973261792 doi "https://doi.org/10.1300/j064v11n02_04" @default.
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