Weed Management Cassava is long-season crop. Control of weeds during the production can be difficult. Early season competition of weeds is extremely critical and a major emphasis on control should be made during this period. Growers must plan a total program that integrates mechanical and cultural methods of weed control with the use of herbicides. At the present time, there are no preemergence residual herbicides for cassava.
Cultivation is an effective way to manage weeds early in the season.
Hilling blades can uproot many annual weeds that have emerged since the last cultivation. Contact with the plants will cause significant yield reduction. Herbicide performance depends on weather and accurate application and timing. Does not provide residual weed control. There are several virus diseases of cassava.