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Essay On Water Estimation

1570 Words7 Pages

INTRODUCTION
Water is becoming precious and scarce due to its increasing demand in agriculture and industrial sector. Agriculture being the mainstay of population and exploitation of available water resources to meet the agricultural need requires its scientific management. An important aspect of agricultural planning is to work out requirements of water for crops. The water requirements of crop vary widely from crop to crop and also during the entire crop growth period of individual crop. Thus estimation of crop water requirements considering the crop pattern has been an area which has attracted attention of water resources planners and engineers. The main parameter which is required to be determined for estimating the crop water requirements is crop evapotranspiration (ETo) which when multiplied with the crop factor gives the value of water required by the crop. The actual evapotranspiration can be measured in the field with the help of lysimeter or by actual moisture content measurement. But it is not always possible. Therefore some analytical methods are required for evaluating evapotranspiration values.
Estimates of the …show more content…

Irrigation scheduling is an important element in improving water use efficiency (WUE). Several new plant and soil water sensor technologies have direct implications for improving irrigation management. Irrigation scheduling research priorities are recommended to focus on evapotranspiration (ET) estimation methods, on improved understanding of spatial variation of ET and irrigation applications on identifying the water balance components in typical irrigated agriculture, on integrating various sensing technologies into irrigation scheduling models and controls, on new and improved sensor technology and on integrating water quality constraints into irrigation scheduling and control. Technology transfers of irrigation scheduling information to Producers need to consider producers’ behavior and their actual on-farm needs (T.A. Howell,

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