Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 448368
Title Does the informal seed system threaten maize seed health?
Author(s) Biemond, P.C.; Oguntade, O.; Stomph, T.J.; Termorshuizen, A.J.; Struik, P.C.
Source In: 10th International Congress of Plant Pathology: Bio-security, food safety and plant pathology, August 25-30, 2013, Beijing, China. - - p. 246 - 247.
Event 10th International Congress of Plant Pathology: Bio-security, food safety and plant pathology, 25-30 August 2013, Beijing, China, 2013-08-25/2013-08-30
Department(s) Crop and Weed Ecology
Centre for Crop Systems Analysis
PE&RC
Publication type Abstract in scientific journal or proceedings
Publication year 2013
Abstract seed-producing farmers, the informal Seed System, despite the presence of seed companies selling hybrid maize seed. Overhead costs force seed companies to charge a relatively high seed price, while farmers have limited budget for seed, request small quantities, and live in remote areas far from seed company outlets. The informal SS can meet this seed demand, but seed quality remains unknown. The objective of this research was to test seed quality (germination, off-types and seed health) of 87 farmer-produced seed samples from Northern Nigeria, and to compare it with six seed company and six foundation seed samples. Seed health was quantified by plating disinfected seeds onto agar, and identifying all bacteria and fungi present after three days. The most prevalent seed-borne pathogen was Fusarium verticillioides, identified in all samples and infecting over 50% of the 49.500 seeds tested. Twelve seed-borne pathogens were identified. Bipolaris maydis (found in 45% of the farmer-produced samples), Botryodiplodia theobromae (97%), Curvularia lunata (38%), and Macrophomina phaseolina (74%) were the four most devastating pathogens detected. Seed company samples had lower infection incidences than farmer produced seed for three out of four of these pathogens, and had significantly less off-types (P
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