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

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By Christopher J Barrow

An creation to runoff agriculture - a sort of agricultural irrigation - this article describes how using floor and subsurface water, frequently ignored and wasted, allows either small farmers and advertisement agriculturists to enhance yields and the safety of harvest, even in harsh and distant environments. The textual content introduces the options and methods, in addition to the demanding situations and the possibility of the an important technique, that may give a contribution lots to decreasing land degradation and enhancing conservation and sustainability.

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Extra resources for Alternative irrigation: the promise of runoff agriculture

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95Latin America 95North America 96Israel (Negev Desert) 96Lebanon 96Yemen 96Spain 96Madeira 97Canary Islands 97Cape Verde Islands 97Aegean Islands 98Other Mediterranean islands 99India and Sri Lanka 99The Philippines 99Pakistan 99Iran 100Eastern Sudan 100Tanzania 100Niger 100Morocco 101Tunisia 103 6 Expanding, Upgrading and Rehabilitating Runoff Agriculture 104Runoff Harvesting 108Flood and Wetland Agriculture 108Tank Storage 109Non-Sedentary Agriculture 109Promoting Runoff Agriculture and Soil and Water Conservation 110What helps innovation or upgrading to succeed?

My thanks are also due to The British Academy for providing field visit funding. I am also most grateful to the Library, University of Wales Swansea. 1). 0 billion, and it is unlikely to stabilize before reaching 11 billion and may reach 15 billion by AD 2050. Irrigated land increased roughly five-fold to around 235 million hectares between 1900 and 1992, so that by the early 1990s about 16 per cent of total cropland was ‘irrigated’ and gave approximately 36 per cent of total harvest. More than half of increased food production since 1970 has come from irrigated land (rough estimate) (Postel, 1992, p49; Srivastava et al, 1993, p13).

Who farms it? Is it in the interests of the owners to combat erosion and runoff? • Who enjoys ownership of trees and hedges? Who is allowed to plant and exploit them? What are trees and hedges used for (eg fodder, woodfuel)? • If land improvements (such as SWC) are carried out, who will benefit? Who will own them? Will land rents increase? • Do local people have a tradition of SWC; can they cooperate and organize? • Is conflict likely between locals and nearby groups if there is improvement? Is there any chance of regional unrest?

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