OPEN QUIZ 10 - 51 questions

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ROOF - Building Materials short notes and previous year questions

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Introduction:  Irrigation may be defined as the process of artificially supplying water to the soil for raising crops. Importance of irrigation 1. Area of less rainfall 2. Non-Uniform rainfall 3. Commercial crops with additional water 4. Controlled Water Supply Types or Systems of Irrigation: Lift Irrigation: It is that system of irrigation in which irrigation water is available at a level lower than that of the land to be irrigated and hence water is lifted by pumps or other mechanism (Hydraulic ram and siphon action) and then conveyed to agriculture fields by gravity flow.  Inundation Irrigation: It is that system of irrigation in which large quantity of water flowing in a river is allowed to flood or inundate the fields to be cultivated.  Perennial Irrigation: It is that system of irrigation in which irrigation water is supplied as per the crop requirements at regular intervals throughout the crop period. Direct Irrigation: It is a type of flow irrigation in which wa...
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