Irrigation Engineering And Hydraulic Structures

Step 1: Understanding irrigation methods.
- Border strip irrigation is not effective for crops with high water demand since it does not provide uniform water distribution over large areas. - Check basin and sprinkler methods are designed for efficient water distribution, especially for crops with higher water needs. - Furrow irrigation is generally suitable for crops that require high water volumes, but its efficiency depends on the terrain.
Step 2: Analysis of options.
- (1) Border strip method: Correct. This method is less efficient in providing adequate water for crops with high water deman(D) - (2) Check basin method: Incorrect. This method is effective for high water demand crops. - (3) Sprinkler method: Incorrect. This method provides controlled water distribution, making it suitable for high water demand crops. - (4) Furrow method: Incorrect. This method is effective for crops with high water demand but requires proper management.
Step 3: Conclusion.
The correct answer is (1) Border strip metho(D)
Final Answer:

Step 1: Understanding the theories.
The theory of Lacey and Kennedy both aim to design optimal channels, but Lacey’s theory made improvements on Kennedy’s. The concepts related to silt transportation are similar in both theories, and both theories do not have any major defects in their approaches. Additionally, the theories are both used in the design of lined canals.
Step 2: Conclusion.
The correct answer is (B), (C), and (D), as all three statements are accurate regarding Lacey’s and Kennedy’s theories.
Final Answer: