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Home/ Questions/Q 3313
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Samaira
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Samaira
Asked: November 20, 20202020-11-20T05:35:46+00:00 2020-11-20T05:35:46+00:00In: Class 8 Science

What is irrigation? Describe two methods of irrigation which conserve water.

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NCERT Solutions for Class 8 Science Chapter 1
Important NCERT Questions
8th Chapter 1 Crop Production and Management
NCERT Books for Session 2022-2023
CBSE Board and State bord
Questions No- 6

2020-2021cbsechapter 1class 8 scienceclass8crop production and managementncertscience
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    1. Akshay Ahuja
      2020-11-20T05:40:50+00:00Added an answer on November 20, 2020 at 5:40 am

      The supply of water to crops at different intervals is called irrigation. The two methods of irrigation which conserve water are as follows:
      (i) Sprinkler System:
      Under this method, the perpendicular pipes, having rotating nozzles on top, are joined to the main pipeline at regular intervals. When water is allowed to flow through the main pipe under pressure with the help of a pump, it escapes from the rotating nozzles. It gets sprinkled on the crop as if it is raining.
      (ii) Drip system:
      In this system, the water falls drop by drop just at the position of the roots. It is the best technique for watering fruit plants, gardens and trees. Water is not wasted at all. It is a boon in regions where availability of water is poor.

      https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-1/

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    2. Bhupendra
      2023-11-30T07:05:34+00:00Added an answer on November 30, 2023 at 7:05 am

      Irrigation is the controlled application of water to soil to support plant growth during insufficient rainfall or dry periods. Here are two water-conserving methods:

      Drip Irrigation:
      Drip irrigation is a highly efficient method that delivers water directly to plant roots through a network of tubes or hoses with emitters. By releasing water slowly and precisely at the root zone, this method significantly reduces water wastage due to evaporation or runoff. Its targeted approach ensures maximum water use efficiency, conserving substantial amounts compared to traditional methods.

      Subsurface Irrigation:
      Subsurface irrigation delivers water below the soil surface directly to the plant root zone, minimizing loss through evaporation and runoff. Using buried pipes or tubes that release water at a controlled rate beneath the soil, this method efficiently provides moisture to the roots, promoting better plant growth while conserving water.

      Both drip and subsurface irrigation methods are highly effective in conserving water by minimizing waste and precisely delivering water to plant roots, thereby contributing to sustainable agricultural practices.

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