Mussidia nigrivenella Ragonot is a pest of maize cobs in West Africa. It significantly reduces maize yields and grain quality, with quantitative losses of 2–25% at harvest, and up to 10–15% indirect losses due to an increase in storage pest infestation levels. Infestation by M. nigrivenella also ...
Sétamou, M.
,
Schulthess, F.
,
Goergen, Georg E.
,
Poehling, H.M.
,
Borgemeister, C.
,
[Natural enemies of the maize cob borer Mussidia nigrivenella (Lepidoptera: Pyralidae) in Benin, West Africa]
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Natural enemies of the maize cob borer Mussidia nigrivenella (Lepidoptera: Pyralidae) in Benin, West Africa
In cover cropping systems in the tropics with herbaceous legumes, plant residues are expected to supply nitrogen (N) to non-legume crops during decomposition. Field experiments were carried out to (i) determine the effects of residue quality on decomposition and N release patterns of selected pla...
Sanginga, P.
,
Vanlauwe, Bernard
,
Merckx, R.
,
Ibewiro, B.
,
[Nitrogen contributions from decomposing cover crop residues to maize in a tropical derived savanna]
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Nitrogen contributions from decomposing cover crop residues to maize in a tropical derived savanna
Reliable estimates of symbiotically fixed N2 in herbaceous legumes are important in order to determine their role in maintaining or improving N levels in tropical low-external-input farming systems. We have studied the effects of different management systems on the suitability of two non-N2-fixin...
Ibewiro, B.
,
Sanginga, P.
,
Vanlauwe, Bernard
,
Merckx, R.
,
[Evaluation of symbiotic dinitrogen inputs of herbaceous legumes into tropical cover crop systems]
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Evaluation of symbiotic dinitrogen inputs of herbaceous legumes into tropical cover crop systems
The fate of 15N-labeled plant residues from different cover-cropping systems and labeled inorganic N fertilizer in the organic, soil mineral, microbial biomass and soil organic matter (SOM) particle-size fractions was investigated in a sandy Lixisol. Plant residues were from mucuna (legume), labl...
Ibewiro, B.
,
Vanlauwe, Bernard
,
Sanginga, P.
,
Merckx, R.
,
[Transformations and recovery of residue and fertilizer nitrogen15 in a sandy Lixisol of West Africa]
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Transformations and recovery of residue and fertilizer nitrogen15 in a sandy Lixisol of West Africa
Oviposition and development of Sitophilus zeamais Motschulsky were studied on shelled maize kernels and unshelled cobs of the variety “Blanc Deux Precoce” from the Republic of Benin. On unshelled cobs adult weevils must feed and oviposit mostly on the kernel's crown, the only part of the kernel f...
Kossou, D.K.
,
Bosque Pérez, N.A.
,
Mareck, J.H.
,
[Effects of shelling maize cobs on the oviposition and development Sitophilus zeamais Motschulsky]
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Effects of shelling maize cobs on the oviposition and development Sitophilus zeamais Motschulsky
Land clearing of a tropical rainforest implies cutting and felling of existing vegetation by manual or mechanized techniques, with or without windrowing, followed by burning in situ or in windrows. The objective of this study was to evaluate effects of land clearing at three levels of initial soi...
Ghuman, B.S.
,
Lal, R.
,
[Effects of soil wetness at the time of land clearing on physical properties and crop response on an Ultisol in southern Nigeria]
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Effects of soil wetness at the time of land clearing on physical properties and crop response on an Ultisol in southern Nigeria
Insect species and damage levels were evaluated and related to aflatoxin content in maize sampled from farmers' stores in four agroecological zones over a two-year period in Benin, West-Africa. In 1993, no aflatoxin was detected in maize that was free of isect damage. In the same year; in maize w...
Hell, K.
,
Cardwell, K.
,
Sétamou, M.
,
Schulthess, F.
,
[Influence of insect infestation on aflatoxin contamination of stored maize in four agroecological regions in Benin]
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Influence of insect infestation on aflatoxin contamination of stored maize in four agroecological regions in Benin
Intensification of rainfed agriculture in the Ethiopian highlands has resulted in soil degradation and hardpan formation, which has reduced rooting depth, decreased deep percolation, and increased direct runoff and sediment transport. The main objective of this study was to assess the potential i...
Hussein, Misbah A.
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Muche, Habtamu
,
Schmitter, Petra
,
Nakawuka, Prossie
,
Tilahun, Seifu A.
,
Langan, Simon
,
Barron, Jennie
,
Steenhuis, Tammo S.
,
[Deep tillage improves degraded soils in the (sub) humid Ethiopian highlands]
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Deep tillage improves degraded soils in the (sub) humid Ethiopian highlands
The Guinea savannas of Nigeria have a high potential for the production of maize because of favourable environmental conditions. Despite this high potential, the yields obtained in farmers' fields are still very low. This is due to soil degradation and nutrient depletion arising from intensificat...
Kamara, A.
,
Menkir, A.
,
Ajala, S.O.
,
Kureh, I.
,
[Performance of diverse maize genotypes under nitrogen deficiency stress in the northern Guinea Savanna of Nigeria]
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Performance of diverse maize genotypes under nitrogen deficiency stress in the northern Guinea Savanna of Nigeria
Rusinamhodzi, Leonard
,
Wijk, Mark T. van
,
Corbeels, Marc
,
Rufino, Mariana C.
,
Giller, Ken E.
,
[Maize crop residue uses and trade-offs on smallholder crop-livestock farms in Zimbabwe: economic implications of intensification]
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Maize crop residue uses and trade-offs on smallholder crop-livestock farms in Zimbabwe: economic implications of intensification