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The ability to fix N is not the only key to delivery of the benefits of BNF to farmers: experience of IITA in the savannas of Africa

dc.contributor.authorCarsky, R.
dc.contributor.authorSanginga, N.
dc.contributor.authorSchulz, S.
dc.contributor.authorDouthwaite, Boru
dc.contributor.authorManyong, Victor M.
dc.contributor.authorDiels, J.
dc.contributor.authorVanlauwe, B.
dc.contributor.authorKeatinge, J.D.H.
dc.date.accessioned2019-12-04T11:36:34Z
dc.date.available2019-12-04T11:36:34Z
dc.date.issued2004
dc.identifier.citationCarsky, R.J., Sanginga, N., Schulz, S., Douthwaite, B., Manyong, V.M., Diels, J., ... & Keatinge, J. D. (2004). The ability to fix N is not the only key to delivery of the benefits of BNF to farmers: experience of IITA in the savannas of Africa. In: R. Serraj, Symbiotic nitrogen fixation prospects for enhanced application intropical agriculture. New Delhi, India: Oxford and IBH Publishing Co. Pvt. Ltd., (p.145-161).
dc.identifier.isbn81-204-1614-7
dc.identifier.urihttps://hdl.handle.net/20.500.12478/6289
dc.description.abstractThe IITA in its research for sustainable soil fertility management has passed through several stages during which legume-based systems were always at the forefront. Alley cropping has N yields of more than 200 kg ha-1 with 50% N2 fixation. In the case of Mucuna cover cropping, the ecological benefit was unequivocal, with more than 100 kg ha' of N2 fixed and consistently positive effects on crop yields. But adoption by farmers has been too low to bring the benefit of BNF to farm households. Based on these experiences, we have proposed increased emphasis on systems based on cowpea and soybean rotation because of their high adoptability although the benefits to the soil are small compared with Mucuna fallows and alley farming. Besides high protein grain production, cowpea and soybean rotation reduced densities of Striga hermonthica by 50% in farmer-managed trials and increased net benefits to farmers. Cover cropping and agroforestry systems can also be used for soil fertility management, but only if their adoptability increases by providing products needed by farmers.
dc.language.isoen
dc.subjectSoil Fertility
dc.subjectMucuna
dc.subjectStriga Hermonthica
dc.subjectAgroforestry
dc.subjectCowpeas
dc.subjectSoybeans
dc.subjectFarmers
dc.subjectBiological Nitrogen Fixation
dc.titleThe ability to fix N is not the only key to delivery of the benefits of BNF to farmers: experience of IITA in the savannas of Africa
dc.typeBook Chapter
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationInternational Center for Tropical Agriculture
cg.contributor.affiliationInternational Crops Research Institute for the Semi-Arid Tropics
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.authorship.typesCGIAR multi-centre
cg.iitasubjectSoil Fertility
cg.iitasubjectPlant Diseases
cg.iitasubjectPlant Health
cg.iitasubjectDisease Control
cg.iitasubjectCowpea
cg.iitasubjectSoybean
cg.accessibilitystatusLimited Access
cg.reviewstatusPeer Review
local.dspaceid107571


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