44. Irrigation Requirement and Frequency of Irrigation
Irrigation serves a pivotal role in enhancing agricultural productivity, particularly where rainfall is inconsistent. This chapter explores crucial elements such as Crop Water Requirement, Irrigation Requirement, effective rainfall, and irrigation frequency, emphasizing their interrelatedness and significance in efficient irrigation system design. Additionally, it discusses strategies for optimizing irrigation scheduling and improving water use efficiency, promoting sustainability in agricultural practices.
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What we have learnt
- Understanding Crop Water Requirement (CWR) is essential for effective irrigation management.
- Irrigation Requirement (IR) is determined by accounting for effective rainfall and natural water contributions.
- Optimizing irrigation frequency and scheduling can enhance crop yield while conserving water resources.
Key Concepts
- -- Crop Water Requirement (CWR)
- The total quantity of water needed by a crop for its full growth and development within specific climatic and soil conditions.
- -- Irrigation Requirement (IR)
- The amount of water that must be supplied to meet the crop water requirement, adjusted for effective rainfall and other sources.
- -- Effective Rainfall (ER)
- The portion of total precipitation available for crop utilization.
- -- Water Use Efficiency (WUE)
- A measure of crop yield relative to the amount of water used in the growing process.
- -- Leaching Requirement
- The additional water needed to remove excess salts from the root zone in saline soils.
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