Soil Ridges-Clods and Wind Erosion

A portable wind tunnel was used to evaluate soil losses in 10 minutes from a flat surface, and from ridges 63 to 254 mm high when 0 to 60% of the soil surface was covered with nonerodible clods. Soil losses were reduced 90% with soil ridges 63 to 254 mm high, 89% with nonerodible soil clods covering 60% of the soil surface, and 98% with a combination of the larger ridges and 40% clods. Results of bare soil ridges were very similar to wind tunnel results of three other studies.