Irrigation Short Questions & Answers

Irrigation Short Questions & Answers Points : Irrigation Short Questions & Answers Q.1 Define the term of Irrigation. Ans: Irrigation may be defined as the process of artificially supplying water to soil for raising crops. Q.2: What is necessity of Irrigation? Ans: Pakistan s basically an agricultural country, and all its resources depend on the agricultural output Q.3: Write down the name which scope of Irrigation Is divided. Ans: The scope of irrigation is not limited to the application of water to the soil. It deals with all aspects and problems extending from the watershed to the agricultural farms. It deals with the design and construction of all works, such as dams, weirs, head regulators etc. in connection with the storage or diversion of water, as well as the problems of subsoil drainage, soil reclamation J*id water-soil-crop relationships. Q.4: Write down the name which scope of Irrigation. Ans: (a) Engineering aspect (b) Agricultural aspect Q.5: Write down the name of engineering aspect phases. Ans: (1) Storage Diversion or ling of water.
(2) Conveyance of water to the agricultural fields.
(3) Application of water to agricultural fields.
(4) Drainage and relieving water logging.
(5) Development of water power. Q.6: Define the development of water power? Ans: Most of the irrigation projects are associated with the generation of the hydroelectric power either at the dam site or at canal falls. Q.7: Write down the two points which deals the Agricultural aspect. Ans: The agricultural aspect deals with the thorough study of the following points:
1. Proper depths of water necessazy in single application of water for various crops.
2. Distribution of water uniformly and periodically. Q.8: Write down the sources of water? Ans: (1) Surface sources of water river, lakes, stream dc)
(2) Sub surface sources of water (springs, wells etc.) Q.9: Explain the difference between surface and subsurface sources of water. Ans: The surface sources of water are the sources in which the water (lows over the earths surface. These include rivers, lakes, streams, natural ponds, storage or impounded reservoirs. The water from these sources is known as surface water The sub-surface or ground water sources are those which supply water from below the earth’s surface. These include springs,, infiltration galleries, wells and porous pipe galleries. Q.10: Write down the difference between spring and Infiltration galleries? Ans: The horizontal tunnels constructed at shallow depths along the banks of a river to intercept the ground water table are called infiltration galleries. The quantity of water available from infiltration gallery depends upon the yield of the source, nature of soil and size of gallery. The yield of the gallery may be about. 15000 litres per metre length of the gallery. The infiltration galleries are most suitable for increasing the surface source supply in dry season.