Seminar, Temas341-352R. Thapar, 1988 |
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Página 62
... irrigation without drainage are both harmful . Over - irrigation builds up salinity and destroys soil fertility . FAO statistics a few years back reported that 50 per cent of the world's irrigated land has become infertile . Professor ...
... irrigation without drainage are both harmful . Over - irrigation builds up salinity and destroys soil fertility . FAO statistics a few years back reported that 50 per cent of the world's irrigated land has become infertile . Professor ...
Página 49
... irrigation cause are in ascendency . Economists were the first to observe that large investments in major irrigation works during the first plan period ( 1951-56 ) did not result in any noteworthy addition to irrigation capacity . Since ...
... irrigation cause are in ascendency . Economists were the first to observe that large investments in major irrigation works during the first plan period ( 1951-56 ) did not result in any noteworthy addition to irrigation capacity . Since ...
Página 50
... irrigation potential would be to acclaim the planners for maintaining a balance between the two categories of irrigation . This is for two solid reasons . First , the two sources of irrigation , namely , groundwater and surface water ...
... irrigation potential would be to acclaim the planners for maintaining a balance between the two categories of irrigation . This is for two solid reasons . First , the two sources of irrigation , namely , groundwater and surface water ...
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