Cogongrass is a noxious perennial grass that has invaded many countries in the tropical and subtropical regions of the world. Its management has been a significant challenge because of large rhizome and bud reserves in the soil. The emergence pattern of this weed under field conditions has receiv...
Ekeleme, F.
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Forcella, F.
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Archer, D.W.
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Chikoye, D.
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Akobundu, I.O.
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[Simulation of shoot emergence pattern of cogongrass (Imperata cylindrica) in the humid tropics]
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Simulation of shoot emergence pattern of cogongrass (Imperata cylindrica) in the humid tropics
Speargrass, Imperata cylindrica (L.) Raeuschel, is a serious weed, threatening crop productivity in smallholder farms in West Africa. Since the use of more effective practices such as deep tillage and chemical control is beyond the means of resource-poor farmers who carry out most agricultural ac...
The use of agroforestry systems in which pruning from trees is used to mulch the companion crops is an important area of research in the tropics. However, previous studies mostly evaluated the contribution of mulch to soil improvement and rarely examined the effect of mulch on weeds. Field experi...
Kamara, A.Y.
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Akobundu, I.O.
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Jutzi, S.C.
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[Selective control of weeds in an arable crop by mulches from some multipurpose trees in southwestern Nigeria]
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Selective control of weeds in an arable crop by mulches from some multipurpose trees in southwestern Nigeria
Leaf extracts and mulch from 14 multipurpose trees were used to test their effects on maize germination, growth and yield. Maize germination was significantly reduced by leaf extracts of all species with increasing extract concentration. The most drastic reductions were caused by Gliricidia sepiu...
Kamara, A.Y.
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Akobundu, I.O.
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Sanginga, N.
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Jutzi, S.C.
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[The effects of mulch from selected multipurpose trees on nitrogen nutrition, growth and yield of maize (Zea mays)]
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The effects of mulch from selected multipurpose trees on nitrogen nutrition, growth and yield of maize (Zea mays)
Akobundu, I.O.
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[Weed science research at the International Institute of Tropical Agriculture and research weeds in Africa]
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Weed science research at the International Institute of Tropical Agriculture and research weeds in Africa
Weeds are a major constraint to crop production in smallholder farms in tropical Africa. The weed seedbank and annual recruitment are the main sources of weed infestation in crops. This study was carried out in Ibadan, Nigeria, to evaluate the effect on the seedbank of two types of planted fallow...
Ekeleme, F.
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Akobundu, I.O.
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Isichei, A.O.
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Chikoye, D.
,
[Cover crops reduce weed seedbanks in maizecassava systems in southwestern Nigeria]
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Cover crops reduce weed seedbanks in maizecassava systems in southwestern Nigeria
Knowledge of magnitude and timing of weed seedling flushes is crucial in managing weeds adequately. Such knowledge is especially important for small-scale farmers in West Africa who spend a greater percentage of family labour in controlling weeds. This study assessed the composition, pattern and ...
Ekeleme, F.
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Chikoye, D.
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Akobundu, I.O.
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[Impact of natural, planted (Pueraria phaseoloides, Leucaena leucocephala) fallow and landuse intensity on weed seedling emergence pattern and density in cassava intercropped with maize]
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Impact of natural, planted (Pueraria phaseoloides, Leucaena leucocephala) fallow and landuse intensity on weed seedling emergence pattern and density in cassava intercropped with maize
Twelve herbaceous and shrub legume species were grown in pot and field experiments in five sites representing three agroecological zones in moist savanna in Nigeria. The objectives were to: (1) assess natural nodulation of the legumes and characterize their indigenous rhizobia, (2) determine thei...
Sanginga, N.
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Wirkom, L.E.
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Okogun, A.
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Akobundu, I.O.
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Carsky, R.J.
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Tian, G.
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[Nodulation and estimation of symbiotic nitrogen fixation by herbaceous and shrub legumes in Guinea Savanna in Nigeria]
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Nodulation and estimation of symbiotic nitrogen fixation by herbaceous and shrub legumes in Guinea Savanna in Nigeria
The severity and increase of the Imperata cylindrica constraint as a weed, the decline of the traditional fallow systems as a means of soil fertility management and the lack of inorganic fertilizer appear to have created opportunities for adoption of mucuna (Mucuna pruriens) technology by smallho...
Sanginga, N.
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Ibewiro, B.
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Houngnandan, P.
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Vanlauwe, Bernard
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Okogun, J.A.
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Akobundu, I.O.
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Versteeg, M.
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[Evaluation of symbiotic properties and nitrogen contribution of mucuna to maize grown in the derived savanna of West Africa]
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Evaluation of symbiotic properties and nitrogen contribution of mucuna to maize grown in the derived savanna of West Africa
Field studies carried out in a forest transition site on a tropical Alfisol in southwestern Nigeria, show that shading by gliricidia (Gliricidia sepium (Jacq.) Steud) and leucaena (Leucaena leucocephala (Lam.) de Wit) hedgerow species reduced density of speargrass (Imperata cylindrica (L.) Raeusc...
Anoka, U.A.
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Akobundu, I.O.
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Okonkwo S.N.C.
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[Effects of Gliricidia sepium (Jacq) Steud and Leucaena leucocephala (Lam.) de Wit on growth and develoment of Imperata cylindrica (L.) Reuschel]
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Effects of Gliricidia sepium (Jacq) Steud and Leucaena leucocephala (Lam.) de Wit on growth and develoment of Imperata cylindrica (L.) Reuschel