What is the term for the bund formation in contour farming? (MCAER 2018)

✅Explanation:
-Contour bunds are constructed along the contour lines of a slope to prevent soil erosion and conserve water in contour farming.

📌Other Options Explanations:
-Option A: Ridge bunds are raised earthen structures used for various purposes like water conservation and land demarcation.
-Option B: Graded bunds are designed with a slight slope to facilitate controlled water flow.
-Option D: Diversion bunds are used to divert excess water from a field.

🔑Key point: – CONTOUR BUNDING:
-This method of soil and water conservation is employed in hilly areas.
-Earthen embankments are built across the slope of the land, following the contour as close as possible.
-This helps in reducing the flow of water down the slope.

• Some common methods of preventing soil erosion are:
-Shelterbelts – in this, trees and shrubs are planted in the areas liable to strong wind action, to shield the fields against winds.
-Terracing – this is also practiced in the sloppy areas.
-Perimeter runoff control – it helps in preventing soil erosion by impeding surface flows.
-Mixed cropping and crop rotation also help in soil conservation by preventing the nutrients from getting eroded.