Which of the following is NOT a principle of soil conservation?

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Reduce surface runoff and retain excess waterUtilize non-fertile lands efficientlyAllow barren lands to remain uncultivated to promote desertificationBuild small dams and ponds to store water for livestock and other usesnull

Explanation

Soil conservation aims to reduce runoff, make productive use of non-arable lands, and collect water through structures like mini dams and ponds. However, deliberately leaving barren lands uncultivated to encourage desertification contradicts the goals of soil conservation.