Scientific Aspects of Irrigation Schemes: A Royal Society Discussion |
From inside the book
Results 1-3 of 54
Page 232
... efficiency water ' and to the water that percolates below the root zone of the crop . Rice water requirements are the sum of crop consumptive use ( actual crop evapotranspiration in other words ) and percolation less effective rainfall ...
... efficiency water ' and to the water that percolates below the root zone of the crop . Rice water requirements are the sum of crop consumptive use ( actual crop evapotranspiration in other words ) and percolation less effective rainfall ...
Page 323
... efficiency for grain production under abundant irrigation ( cf. Fischer & Kertesz 1976 ) . Taken overall , the evidence suggests that there are substantial differences between the varieties of a crop in the efficiency of water use for ...
... efficiency for grain production under abundant irrigation ( cf. Fischer & Kertesz 1976 ) . Taken overall , the evidence suggests that there are substantial differences between the varieties of a crop in the efficiency of water use for ...
Page 360
... efficiency achieved at farming - unit level and standards of management in the conveyance system . Where water is not delivered in the correct amounts and at the right times to the farming unit the efficiency of distribution is ...
... efficiency achieved at farming - unit level and standards of management in the conveyance system . Where water is not delivered in the correct amounts and at the right times to the farming unit the efficiency of distribution is ...
Contents
J HENNESSY | 193 |
N J COCHRANE | 211 |
G R HOFFMAN AND R F STONER | 217 |
Copyright | |
10 other sections not shown
Common terms and phrases
achieved agric alfisol applied arid lands Asia Bangladesh Baños calcium canal clay constraints costs crop production cultivation developing countries disease distributary drainage drip irrigation drought dry matter economic effects efficiency electrolyte evaporation evapotranspiration example exchangeable sodium factors farm fertilizer figure flooded growth ha¯¹ hectare humid important improved increase Indonesia inputs interaction ions irrigated agriculture irrigated area irrigated crop irrigation development irrigation schemes irrigation systems irrigation water labour leaching Los Baños maize maximum methods montmorillonite nitrogen nutrients operation particles Penman percentage permeability pest Philippines photosynthesis plant breeding population problems Quirk rain-fed rainfall ratio reduced relation result rice rice production Rothamsted Rothamsted Experimental Station salinity salt season sector sodium solution sorghum sprinkler Stanhill surface threshold concentration transpiration tropical tube-well upland uptake varieties vertisol water management water stress water supply wheat World Bank yield potential