Water Requirement of Crops MCQ with answer and solution

Concept

Irrigation method for steep land

Formula

NONE

Step-by-step solution

1. Free flooding involves letting water flow over land without specific field channels or levees. 2. It is preferred when steep or irregular land is available where constructing regular borders or contour ditches is difficult. 3. Therefore, free flooding is the most suitable method for steep land irrigation. Answer: A

Explanation

Free flooding is suitable for steep land or irregular terrain where land leveling is too expensive or impractical. In this method, water is admitted directly to the field from contour laterals and flows freely down the natural slope. Therefore, free flooding is the preferred method when steep land is available.

Why the other options are wrong

B) Border flooding requires land with a smooth and gentle slope. C) Check flooding requires level land divided into small plots. D) Basin flooding requires flat land surrounded by levees, typically used for orchards.

Shortcut

Steep slopes use Free Flooding as water flows uncontrolled down the incline.

Common mistake

Selecting check or border flooding assuming they prevent soil erosion on steep terrain instead of free flooding.