PeruAn extension agent explains how to make slow-forming terraces, which require deep topsoil and consist of a series of walls built across the slope and heightening as they begin to fill in. - - Soil Con...

PeruThis erosion box is a teaching aid, which demonstrates, in miniature, the erosive effect of water on different soil contours. - - Soil Conservation in the Andes. Terraced agriculture was practiced on...

PeruCrops in the Peruvian coastal flatlands that have been ruined by flooding, the eroded and deforested mountain sides having been unable to hold the rush of waters. - - Soil Conservation in the Andes. T...

PeruThese contour terraces, being built by women, yield 70 percent more potatoes per hectare than do the old sloping fields. - - Soil Conservation in the Andes. Terraced agriculture was practiced on the s...