What is a key benefit of contour farming?

• A. Increased crop yields without any effort
• B. Reduction in soil erosion and water runoff
• C. Utilization of heavy machinery for planting
• D. Focus on growing a single crop type

Answer: (B)

Contour farming is an agricultural practice that involves plowing and planting across the slope of the land, following its natural contours. This method is particularly effective in reducing soil erosion and minimizing water runoff. By aligning rows of crops with the contours of the land, contour farming helps to slow down water movement during rainfall, allowing more time for water to infiltrate the soil rather than washing away topsoil. The practice creates natural barriers or ridges that can catch water and prevent it from flowing rapidly down the slope, which is essential in maintaining soil fertility and structure.

In contrast, options that suggest increased crop yields without effort or the utilization of heavy machinery do not accurately reflect the fundamental principles of contour farming, as these emphasize benefits that could overlook the needed management and care in agricultural practices. Additionally, the focus on growing a single crop type goes against the principles of sustainable farming and biodiversity that contour farming supports. Therefore, the reduction in soil erosion and water runoff is the most significant benefit of contour farming, highlighting its environmental sustainability and effectiveness in conservation.