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 445444
Title Health of farmer-saved maize seed in north-east Nigeria
Author(s) Biemond, P.C.; Oguntade, O.; Stomph, T.J.; Lava Kumar, P.; Termorshuizen, A.J.; Struik, P.C.
Source European Journal of Plant Pathology 137 (2013)3. - ISSN 0929-1873 - p. 563 - 572.
DOI https://doi.org/10.1007/s10658-013-0269-5
Department(s) Crop and Weed Ecology
Centre for Crop Systems Analysis
PE&RC
Publication type Refereed Article in a scientific journal
Publication year 2013
Keyword(s) macrophomina-phaseolina - fusarium-verticillioides - charcoal rot - population - biocontrol - drought - cowpea - system
Abstract Many Nigerian farmers depend for their seed on seed-producing farmers, the so-called informal Seed System (SS), but seed quality of the SS is unknown. Farmers planting low quality seed risk poor field emergence and low plant vigour as a result of low physiological quality or infection with seed-borne pathogens. The objective of this research was to test seed quality of maize seed from the informal SS in north-east Nigeria. A total of 46,500 seeds (93 samples of 500 seeds each) were tested for germination, off-types and seed health. Seed pathology was quantified by plating disinfected seeds onto agar, and identifying the fungi present after 3 days incubation. Twelve seed-borne pathogens were identified including Bipolaris maydis (found in 45 % of the farmer-produced samples), Botryodiplodia theobromae (97 %) and Curvularia lunata (38 %). All samples were infected with Fusarium verticillioides, with a median infection incidence of 59 % (2009) and 51 % (2010). None of the 93 samples tested passed the demands for certified seed of the National Agricultural Seeds Council (NASC) in Nigeria, in particular the maximum limit of five off-types per kg seed sample. Based on these results, seed-producing farmers must improve the health of seed. The NASC should revise the standards for off-type seeds to minimize the time spent by farmers sorting planting material.
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