A user-friendly tool to estimate the requirements for Early Generation Sweetpotato Seed (EGS) is now available for use by public sector seed producers. The method was first used in Uganda to estimate the seed requirement by root producers for quality seed of improved varieties; then estimates of the number of basic seed multipliers this will require; and finally, the amount of pre-basic cuttings and tissue culture plantlets to be produced. Results indicate a need to treble the existing pre-basic seed production capacity; decentralize pre-basic screenhouse capacity to get broader national coverage; improve screenhouse design and utilization to increase efficiency and reduce the cost of pre-basic seed production. Scaling EGS production and linkages through the chain will only be successful if there is an expansion in the root markets driving demand for quality seed.
Authors: Srini Rajendran, Margaret McEwan
Subjects: Inclusive value chain, Seed systems, Sweetpotatoes, Sweetpotato agri-food systems
Publisher: International Potato Center
Publication Date: August 31, 2019
Rights: Open access: CC-BY-4.0
HOW TO CITE
International Potato Center. 2019. SASHA Brief 12. A new method for estimating sweetpotato early generation seed requirements to supply commercial and institutional markets. Sweetpotato Action for Security and Health in Africa Project (SASHA). CIP. 2 p.