A class of 32 second-year Rangeland Management students of the Faculty of Natural Resources and Spatial Sciences, had an insightful experience at Farm Krumhuk, south of Windhoek. The group examined the rangeland restoration efforts of previous students. When asked what he liked most about the excursion, one of the students, Linus Silvanus, said: “I enjoyed learning how to slow down the movement of water by building suspension filters with branches from encroached bushes.”
Although the bush filter will decompose over the coming years, it is expected that with good grazing management, dense grass will establish under the filters, to eventually take over the sieving function. It will then become self-reinforcing, as more rainwater soaks in and the soil underneath puffs up from the activity of soil organisms.