<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Cereal/legume rotation effects on cereal growth in Sudano-Sahelian West Africa: soil mineral nitrogen, mycorrhizae and nematodes"^^ . "Yield increases of cereals following legumes in rotation have been previously reported for West Africa, but little\r\nprogress has been made to explain the mechanisms involved. At four sites in Niger and Burkina Faso, field trials\r\nwith pearl millet (Pennisetum glaucum (L.) R. Br.), cowpea (Vigna unguiculata (L.) Walp), sorghum (Sorghum\r\nbicolor (L.) Moench) and groundnut (Arachis hypogaea L.) were conducted from 1996 to 1998 to investigate\r\nthe role of soil mineral nitrogen (Nmin), native arbuscular mycorrhizae (AM) and nematodes in cereal/legume\r\nrotations. Grain and total dry matter yields of cereals at harvest were increased by legume/cereal rotations at\r\nall sites. Soil Nmin levels in the topsoil were consistently higher in cereal plots previously sown with legumes\r\n(rotation cereals) compared with plots under continuous cereal cultivation. However, these rotation effects on\r\nNmin were much larger with groundnut than with cowpea. Roots of rotation cereals also had higher early AM\r\ninfection rates compared to continuous cereals. The dominant plant-parasitic nematodes found in all experiment\r\nfields were Helicotylenchus sp., Rotylenchus sp. and Pratylenchus sp. In sorghum/groundnut cropping systems,\r\nnematode densities were consistently lower in rotation sorghum compared to continuous sorghum. Continuous\r\ngroundnut had the lowest nematode densities indicating that groundnut was a poor host for the three nematode\r\ngroups. In millet/cowpea cropping systems with inherently high nematode densities, crop rotations barely affected\r\nnematode densities indicating that both crops were good hosts. These results suggest that on the nutrient poor\r\nSudano-Sahelian soils of our study, total dry matter increases of rotation cereals compared with continuous cereals\r\ncan be explained by higher Nmin and AM infection levels early in the season. The site-specific magnitude of these\r\neffects may be related to the efficiency of the legume species to suppress nematode populations and increase plant\r\navailable N through N2-fixation."^^ . "2000" . . "218" . "1-2" . . "Kluwer"^^ . . . "Plant and Soil"^^ . . . "15735036" . . . . . . . . . . . . . . . . . . . "V"^^ . "Romheld"^^ . "V Romheld"^^ . . "A"^^ . "Buerkert"^^ . "A Buerkert"^^ . . "G"^^ . "Lung"^^ . "G Lung"^^ . . "A"^^ . "Bationo"^^ . "A Bationo"^^ . . "M"^^ . "Bagayoko"^^ . "M Bagayoko"^^ . . . . . . "Cereal/legume rotation effects on cereal growth in Sudano-Sahelian West Africa: soil mineral nitrogen, mycorrhizae and nematodes (PDF)"^^ . . . . . . . . . . . "Cereal/legume rotation effects on cereal growth in Sudano-Sahelian West Africa: soil mineral nitrogen, mycorrhizae and nematodes (Image (JPEG))"^^ . . . . . . "Cereal/legume rotation effects on cereal growth in Sudano-Sahelian West Africa: soil mineral nitrogen, mycorrhizae and nematodes (Indexer Terms)"^^ . . . . . "HTML Summary of #1919 \n\nCereal/legume rotation effects on cereal growth in Sudano-Sahelian West Africa: soil mineral nitrogen, mycorrhizae and nematodes\n\n" . "text/html" . . . "Soil Science"@en . .