Improvement In Crop Yields
Chapter Name : Improvement In Food Resources |
Sub Topic Code : 103_09_15_01_07 |
Topic Name : Improvement In Crop Yields |
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Sub Topic Name : Irrigation |
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Introduction
Irrigation -success of crops in most areas is dependent on timely monsoons and sufficient rainfall spread through most of the growing season. Hence, poor monsoons cause crop failure. Ensuring that the crops get water at the right stages during their growing season different irrigation methods are adopted.
Pre-Requisites:
What is irrigation and why is it required.
Activity:
Tanks, in the area you live in.
Real Life Question:
What are the different kinds of irrigation?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Wells - 1) Dug well | water is collected from water bearing strata. |
| 2) Tube well | Tube wells can tap water from the deeper strata. |
| Canals | In this system canals receive water from one or more reservoirs or from rivers. The main canal is divided into branch canals having further dis-tributaries to irrigate fields. |
| River lift systems | Water is directly drawn from the rivers for supplementing irrigation in areas close to rivers. |
| Tanks | These are small storage reservoirs, which intercept and store the run-off of smaller catchment areas. |
Learning aids / Gadgets
| Gadgets | How it can be used |
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Places to visit :
Farms,crop fields.
Practical examples around us
| Examples | Explainations |
|---|---|
| Wells | They are still found in villages. |
What you learn in Theory:
what is irrigation and different types.
What you learn in Practice:
Why is irrigation necessary.