![]() ![]() There is first of all the field's primary elevations. These measurements are well enough known that only their brief mention is required. 3.1 Field topography and configurationĪll field evaluations should include a relatively simple assessment of the field topography and layout. The selection provided herein is based on a limited selection found to be most useful during numerous field evaluations and, in some measure, the practicality in the international sense.įive classes of field measurements are presented: (1) field topography and configuration (2) water requirements (3) infiltration (4) flow measurement and (5) irrigation phases. In some cases, there are alternative methodologies and equipment for accomplishing the same ends. The objectives of the evaluation will dictate whether the field measurements are comprehensive or are simplified for special purposes. System characterization necessitates a series of basic field measurements before, during, and after the irrigation. Field measurements are necessary to characterize the irrigation system in terms of its most important parameters, to identify problems in its function, and to develop alternative means for improving the system. ![]() ![]() The evaluation of surface irrigation at the field level is an important aspect of both management and design. ![]()
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