CBSE Class 9 Answered
Define irrigation . Why is irrigation of crops essential ? Mention the harmful effects of excessive irrigation .
Asked by jeffladebo | 12 May, 2015, 04:46: PM
Expert Answer
- The process of supplying water to crop plants in fields through canals, wells, reservoirs, tube wells etc. is known as irrigation.
- Wells, tube wells, ponds, lakes, dams, rivers and canals are some of the sources of irrigation.
Need for irrigation:
- To make the soil soft due to which ploughing of fields can become easier
- To provide moisture for germination of seeds
- To maintain the moisture of soil for healthy crop growth
- For the absorption of nutrient elements by the plants from the soil
- To protect crop plants from hot air currents as well as frost
Harmful effects of excessive irrigation:
- Excess of water in soil leads to water logging
- Sometimes, it inhibits the process of germination
- Roots do not grow properly in a standing water field
- Excess irrigation destroys standing crops
- Increases the amount of salt on the surface soil as water evaporates
Answered by Sheetal Kolte | 12 May, 2015, 05:20: PM
Application Videos
Concept Videos
CBSE 9 - Biology
Asked by rashmij34 | 20 Mar, 2024, 04:46: PM
ANSWERED BY EXPERT
CBSE 9 - Biology
Asked by bjrathod121 | 18 Jan, 2024, 08:57: PM
ANSWERED BY EXPERT
CBSE 9 - Biology
Asked by sanjitabehera859 | 03 Dec, 2023, 09:49: PM
ANSWERED BY EXPERT
CBSE 9 - Biology
Asked by febievangeline612 | 30 Dec, 2022, 09:45: AM
ANSWERED BY EXPERT
CBSE 9 - Biology
Asked by slaxmibai1982 | 13 Mar, 2022, 12:26: PM
ANSWERED BY EXPERT
CBSE 9 - Biology
Asked by chhotusingh8279880374 | 02 Apr, 2021, 09:05: PM
ANSWERED BY EXPERT
CBSE 9 - Biology
Asked by swatipuspapatel | 19 Nov, 2020, 04:30: PM
ANSWERED BY EXPERT
CBSE 9 - Biology
Asked by gulvejayshree | 19 Nov, 2020, 12:04: PM
ANSWERED BY EXPERT
CBSE 9 - Biology
Asked by LikithLikith745 | 16 Jul, 2020, 11:03: AM
ANSWERED BY EXPERT