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Soil nutrient harvesting in indigenous teras water harvesting in eastern Sudan

โœ Scribed by D. Niemeijer

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
320 KB
Volume
9
Category
Article
ISSN
1085-3278

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โœฆ Synopsis

The indigenous water harvesting system oers greater production security, but its major beneยฎt is that it raises the nutrient-limited yield from some 150ยฑ250 kg ha ร€1 to some 650 kg ha ร€1 through its nutrient harvesting eects. Soil fertility was found to be two to four times higher inside the ยฎeld. Calculated nutrient-limited yields are considerably higher than real yields, which points at other yield-limiting factors such as labour and water availability. The example of the system shows that nutrient harvesting may in some cases be a viable alternative to application of mineral fertilizers. This implies that indigenous technologies can be sustainable and should be thoroughly examined before they are complemented by external inputs.

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