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 ...
... 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 ...
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 ...
... 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 ...
Página 53
... Irrigation for agricultural moderniza- tion . Jodhpur , Scientific , 1987 . Joshi , A.S. Economic of irrigation . Ludhiana , Gagan , 1987 . Mohandas , Palat . Integrated area development planning under the drought prone areas pro ...
... Irrigation for agricultural moderniza- tion . Jodhpur , Scientific , 1987 . Joshi , A.S. Economic of irrigation . Ludhiana , Gagan , 1987 . Mohandas , Palat . Integrated area development planning under the drought prone areas pro ...
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