Evapotranspiration is not easy to measure. Specific devices and accurate measurements of various physical parameters or the soil-water balance in lysimeters are required to determine evapotranspiration. The methods are often expensive, demanding in terms of accuracy of measurement and can only be fully exploited by well-trained research personnel. Although the methods are inappropriate for routine […]
How to Measure Evapotranspiration ? | Plant-Water Relationships | Agronomy
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Measuring the Flow of Water in Pipes | Irrigation | Agronomy
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Several devices are used for measuring the flow of water in pipes. A few of them, which may find application on the farm, are as follows: 1. Volume Measurement 2. Flow Rate Measurement 3. Measurement of Cumulative Flow 4. Water Level Recording. Method # 1. Volume Measurement: A simple method for measuring small irrigation streams […]
Measuring the Flow of Irrigation Water in Open Channels | Agronomy
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Methods for measuring water in open channels can be grouped into two methods: 1. Velocity-Area Methods 2. Direct Discharge Methods. Method # 1. Velocity-Area Methods: In this method, velocity of flow in the channel is measured by some means and the discharge is calculated from the area of cross-section using the equation Q = A […]