Organic Waste Recycling

Land treatment of wastewater 393

Remarks High water losses possible from deep percolation or surface r

unoff. Care must be

used in limiting size of flow in corrugations to reduce soil erosion. Little land grading required. Similar to small rectangular basins, except crops planted on ridges This method is used to slow the flow of water in furrows to increase water percolation into soil

Soils Best on soils of medium to fine texture Can be used with more soil types Used on soils with low intake rates

Water quantity Flows up to 1 ft

3 /s

Flows up to 5 ft

3 /s

Flows required are usually less than for straight furrows

Topography Uniform slopes of up to 10 % Relatively flat land Land graded to uniform slopes of less than 1 %

Suitabilities and conditions of use Crops Closed-spaced crops such as grain, pasture, alfalfa Vegetables, cotton, maize, and other row crops Vineyards, bush, berries, orchards

Table 8.5 Surface irrigation methods andIrrigation methods Corrugations Basin furrows Zigzag furrows

conditions of use (continued)

1 ft

3 /s = 0.028 m

3 /s; 1 ft = 0.305 m From Booher (1974); reproduced by the permission of the Food and Agriculture Organizatio

n

of the United Nations.