Working Document Series Open Access Seed-borne viruses detected on farm-retained seeds from smallholder farmers in Zimbabwe, Burkina Faso, Bangladesh and Vietnam W. Manyangarirwa · C.N. Mortensen · J. Sibiya The smallholder farming sector in much of the developing world relies on the use of farm-retained seed. The availability of good quality disease free seed is important in enhancing food security but seed-borne viruses can be a major proble… RUF-35119 2010 CC BY 4.0 16 Sep 2015
