RAAIS: Rapid Appraisal of Agricultural Innovation Systems (Part II). Integrated analysis of parasitic weed problems in rice in Tanzania

•Parasitic weeds form a threat for food and income security in sub-Saharan Africa.•There is little attention for parasitic weeds in training and education curricula.•Crop protection policy and research priorities do not focus on weed prevention.•Specific entry points for innovation include increased awareness of parasitic weeds.•Generic entry points for innovation include continuous stakeholder collaboration.