Download Alternative irrigation: the promise of runoff agriculture by Christopher J Barrow PDF

By Christopher J Barrow

An advent to runoff agriculture - a kind of agricultural irrigation - this article describes how using floor and subsurface water, frequently ignored and wasted, permits either small farmers and advertisement agriculturists to enhance yields and the protection of harvest, even in harsh and distant environments. The textual content introduces the suggestions and techniques, in addition to the demanding situations and the possibility of the an important technique, that could give a contribution a lot to lowering land degradation and bettering conservation and sustainability.

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Extra resources for Alternative irrigation: the promise of runoff agriculture

Sample text

What is the debris load of the runoff (is it sandy; silty; does it contain material rich in plant nutrients)? • At what times of the year are the erosion and runoff most acute? • What is the length of the growing season; what time of year does most crop growth take place (winter or summer growth); are most rains in winter or summer? • Are some current or planned crops and farming practices more erosive than others? • How are crop yields affected by observed phenomena? • Are there threats: droughts; flash floods; landslides; frosts, pests; earth movements?

In any given situation there may be several possible techniques and perhaps more than one means of constructing and managing each. Those promoting SWC and runoff agriculture must allow farmers to experiment and chose what works for them, not impose things (Kiome and Stocking, 1995). Better ways are needed to select the right SWC approach for a given situation. 2). SWC efforts over the last 30 years or so have had some good and some disappointing, even seriously damaging, results; for a recent review, see Reij et al, 1996, who present case studies from sub-Saharan Africa.

In any given situation there may be several possible techniques and perhaps more than one means of constructing and managing each. Those promoting SWC and runoff agriculture must allow farmers to experiment and chose what works for them, not impose things (Kiome and Stocking, 1995). Better ways are needed to select the right SWC approach for a given situation. 2). SWC efforts over the last 30 years or so have had some good and some disappointing, even seriously damaging, results; for a recent review, see Reij et al, 1996, who present case studies from sub-Saharan Africa.

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