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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

The influence of weeds on maize intercropped with cassava was evaluated in three fallow management systems and four cropping frequencies from 1989 to 1996 in lbadan, Nigeria, West Africa. Fallow management systems consisted of natural bush, Leucaena leucocephala hedgerows and Puerctria phaseoloid...


Akobundu, I.O.Ekeleme, F.Chikoye, D.[Influence of fallow management systems and frequency of cropping on weed growth and crop yield]Influence of fallow management systems and frequency of cropping on weed growth and crop yield

Planted fallows are an alternative to the unsustainable bush fallow for improved soil and weed management in the tropics. However, the interactive effects of planted fallows and tillage on the weed seedbank are not well documented in the tropical environment. The effect of fallow type and tillage...


Ekeleme, F.Chikoye, D.Akobundu, I.O.[Weed seedbank response to planted fallow and tillage in southwest Nigeria]Weed seedbank response to planted fallow and tillage in southwest Nigeria

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.Forcella, F.Archer, D.W.Chikoye, D.Akobundu, I.O.[Simulation of shoot emergence pattern of cogongrass (Imperata cylindrica) in the humid tropics]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...


Akobundu, I.O.Udensi, U.E.Chikoye, D.[Mucuna spp. suppresses speargrass (Imperata cylindrica) and increases maize yield]Mucuna spp. suppresses speargrass (Imperata cylindrica) and increases maize yield

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.Akobundu, I.O.Jutzi, S.C.[Selective control of weeds in an arable crop by mulches from some multipurpose trees in southwestern Nigeria]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.Akobundu, I.O.Sanginga, N.Jutzi, S.C.[The effects of mulch from selected multipurpose trees on nitrogen nutrition, growth and yield of maize (Zea mays)]The effects of mulch from selected multipurpose trees on nitrogen nutrition, growth and yield of maize (Zea mays)

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.Akobundu, I.O.Isichei, A.O.Chikoye, D.[Cover crops reduce weed seedbanks in maizecassava systems in southwestern Nigeria]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.Chikoye, D.Akobundu, I.O.[Impact of natural, planted (Pueraria phaseoloides, Leucaena leucocephala) fallow and landuse intensity on weed seedling emergence pattern and density in cassava intercropped with maize]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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