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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-b...


Biemond, P.C.Oguntade, O.Stomph, T.Kumar, P.L.Termorshuizen, A.J.Struik, Paul C.[Health of farmersaved maize seed in northeast Nigeria]Health of farmersaved maize seed in northeast Nigeria

Most smallholder farmers in developing countries depend on an informal Seed System (SS) for their seed. The informal SS is often criticized because farmer-produced seed samples are not tested for seed health, thus accepting the risk of planting infected seeds. Here we aimed at assessing the quali...


Biemond, P.C.Oguntade, O.Kumar, P.L.Stomph, T.Termorshuizen, A.J.Struik, Paul C.[Does the informal seed system threaten cowpea seed health?]Does the informal seed system threaten cowpea seed health?

High seed quality is a critical component for realising yield potential. For smallholder cowpea farmers in northern Nigeria the informal seed system is a major supplier of genetically high-quality seed, but the physiological quality of farmers’ produced seed remains unknown. The project “Promotin...


Biemond, P.C.Stomph, T.Kamara, A.Abdoulaye, TahirouHearne, S.Struik, Paul C.[Are investments in an informal seed system for cowpea a worthwhile endeavour?]Are investments in an informal seed system for cowpea a worthwhile endeavour?

A series of pot and laboratory experiments was carried out to assess the effects of N status of sorghum roots and timing of N application (as NH4NO3) on the germination of Striga hermonthica seeds. Root N concentrations varied from 10 to 26 mg N g−1. The cut root and the root exudates technique u...


Ayongwa, G.Stomph, T.Emechebe, A.Kuyper, T.[Root nitrogen concentration of sorghum above 2% produces least Striga hermonthica seed stimulation]Root nitrogen concentration of sorghum above 2% produces least Striga hermonthica seed stimulation

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