Under conservation agriculture, low biomass production impairs the permanent soil cover and thus limits its usual weed-suppressing benefits. Smallholders farmers must, therefore, find other methods of weed control. Scientists Lee and Thierfelder reviewed the applicability of strategies available to smallholder farmers in rainfed dryland areas of southern Africa. They found that a combination of strategies and further research into new technologies, such as weed steaming, could help farmers to better address weed management challenges.
