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A number of improved varieties have been developed by the International Institute of Tropical Agriculture (IITA), combining diverse plant type with resistance or tolerance to several diseases, insect pests, and parasitic weeds and possessing other good agronomic traits. Trials were established wi...


Kamara, A.Y.Ellis-Jones, J.Ekeleme, F.Omoigui, L.O.Amaza, P.Chikoye, D.Dugje, I.Y.[A participatory evaluation of improved cowpea cultivars in the Guinea and Sudan savanna zones of north east Nigeria]A participatory evaluation of improved cowpea cultivars in the Guinea and Sudan savanna zones of north east Nigeria

Striga hermonthica is a widespread parasitic weed species that can causeconsiderable yield loss in susceptible maize cultivars in West and CentralAfrica. To use low doses of imidazolinone herbicides for controlling thisparasite, maize cultivars should possess resistance to this group ofherbicides...


Menkir, A.Chikoye, D.Lum, F.[Incorporating an herbicide resistance gene into tropical maize with inherent polygenic resistance to control Striga hermonthica (Del.) Benth]Incorporating an herbicide resistance gene into tropical maize with inherent polygenic resistance to control Striga hermonthica (Del.) Benth

Soil erosion is a serious problem in the forest-savanna transition zone or derived savanna of West Africa and Nigeria and needs to be reduced to maintain soil quality and to ensure food security. In 2007, the use of the fallout radionuclide 137Cs as a tracer for estimating the magnitude of medium...


Junge, B.Mabit, L.Dercon, G.Walling, D.E.Abaidoo, R.C.Chikoye, D.Stahr, Karl[First use of the 137Cs techniques in Nigeria for estimating mediumterm soil redistribution rates on cultivated farmland]First use of the 137Cs techniques in Nigeria for estimating mediumterm soil redistribution rates on cultivated farmland

In Nigeria, West Africa, soil degradation has been one of the most critical environmental problems for along time. Hence, there has been and still is an urgent need to develop effective soil resource managementsystems that can reverse the trend. Sustaining soil productivity will enhance food secu...


Junge, B.Deji, O.F.Abaidoo, R.C.Chikoye, D.Stahr, KarlKirchhof, G.[Overview of soil conservation technologies and their perception by farmers in Nigeria]Overview of soil conservation technologies and their perception by farmers in Nigeria

Rice production by smallholder farmers in the savannas of Nigeria is constrained by weed competition. A field study was conducted to assess the effect of weed competition on the performance of upland rice varieties in 2005 and 2006 in the northern Guinea and Sudan savannas of Nigeria. The experim...


Ekeleme, F.Kamara, A.Y.Oikeh, S.O.Chikoye, D.Omoigui, L.O.[Effect of weed competition on upland rice production in north-eastern Nigeria]Effect of weed competition on upland rice production in north-eastern Nigeria

The growing population and the increasing food demand in sub-Saharan Africa require comprehensive land use intensification. Land scarcity and soil degradation are some consequences that necessitate enhanced land use management by using remote sensing data. This study presents the analyses of aeri...


Junge, B.Abaidoo, R.C.Chikoye, D.Alabi, T.R.Stahr, Karl[Monitoring of land use intensification and linkage to soil erosion in Nigeria and Benin]Monitoring of land use intensification and linkage to soil erosion in Nigeria and Benin

The weed seed bank under seven fallow tree species was analysed in size and composition five years after tree establishment. The seed bank was lower in Enterolobium cyclocarpum fallows than in the other tree fallows at both 0-5 and 5-10 cm depths. Nuclea latifolia and Terminalia superba tree fall...


Kamara, A.Y.Chikoye, D.Jutzi, S.C.[Differences in weed seed banks in planted tree fallows in southwestern Nigeria]Differences in weed seed banks in planted tree fallows in southwestern Nigeria

Multilocational characterization of selected herbaceous and shrub legumes was carried out over a 3-yr period at lowland and midlatitude sites in the moist savanna agroecological zone in Nigeria where a south-north gradient exists for rainfall, length of growing season, and insolation. One study s...


Ekeleme, F.Akobundu, I.O.Fadayomi, R.O.Chikoye, D.Abayomi, Y.A.[Characterization of legume cover crops for weed suppression in the moist savanna of Nigeria]Characterization of legume cover crops for weed suppression in the moist savanna of Nigeria

Weed seed bank size and composition were analysed in 1995 and 1996 in maize fields mulched with pruning from Gliricidia sepium, Leucaena leucocephala, and Senna siamea in South Western Nigeria. Plots mulched with pruning from the three trees had a lower weed seed bank in the first year of croppin...


Kamara, A.Y.Akobundu, I.O.Chikoye, D.Jutzi, S.C.[Weed seed bank size and composition in an arable crop mulched with pruning from three multipurpose trees in southwestern Nigeria]Weed seed bank size and composition in an arable crop mulched with pruning from three multipurpose trees in southwestern Nigeria

Field experiments were conducted in 1992 to 1993 and in 1995 to 1996 in Ibadan, Nigeria, to assess the effect of velvetbean and herbicides on maize (corn) and cogongrass growth and to assess regrowth of the weed 1 yr after treatment. In 1992 and 1995 cover cropping with velvetbean and imazapyr an...


Udensi, U.E.Akobundu, I.O.Ayeni, A.O.Chikoye, D.[Management of cogongrass Imperata cylindrica with velvetbean Mucuna pruriens var. utilis and herbicides]Management of cogongrass Imperata cylindrica with velvetbean Mucuna pruriens var. utilis and herbicides

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