<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Long-term effects of grain legumes on rainy-season sorghum productivity in a semi-arid tropical Vertisol"^^ . "In southern and central India, farmers crop Vertisols only in the post-rainy season, to avoid land management problems in the rainy season. In 1983 ICRISAT established a long-term trial seeking to intensify cropping. The trial included intercrops, sequential crops and appropriate Vertisol management technology to allow consecutive rainy-season and post-rainy season crops to be grown. Benefits provided by legumes to succeeding rainy-season sorghum (Sorghum bicolor) were analysed in relation to a non-legume system of sorghum + safflower (Carthamus tinctorius). Rainy-season sorghum grain yield production was sustained at about 2.7 t ha-1 over 12 years within a continuous sorghum-pigeonpea (Cajanus cajan) intercrop system. With a cowpea-pigeonpea intercrop system, succeeding sorghum benefited each year by about 40 kg N ha-1 (fertilizer nitrogen (N) equivalent). Without N fertilizer application the sorghum grain yield was around 3.3 t ha-1. Legume benefits were less marked in the chickpea (Cicer arietinum)-based rotation than in the pigeonpea system, in which a 12-year build up of soil total N (about 125 µg g-1) was observed. Although sorghum benefited from this system, pigeonpea yields declined over time due to soil-borne fungi and nematodes. Wider rotations of crops with pigeonpea may help to overcome these problems, while sustaining sorghum production."^^ . "2000" . . "36" . "2" . . "Experimental Agriculture"^^ . . . . . . . . . . . "V"^^ . "Nageswara Rao"^^ . "V Nageswara Rao"^^ . . "T J"^^ . "Rego"^^ . "T J Rego"^^ . . . . . . "Long-term effects of grain legumes on rainy-season sorghum productivity in a semi-arid tropical Vertisol (PDF)"^^ . . . . . . . . . "Long-term effects of grain legumes on rainy-season sorghum productivity in a semi-arid tropical Vertisol (Image (JPEG))"^^ . . . . . . "Long-term effects of grain legumes on rainy-season sorghum productivity in a semi-arid tropical Vertisol (Indexer Terms)"^^ . . . . . "HTML Summary of #1870 \n\nLong-term effects of grain legumes on rainy-season sorghum productivity in a semi-arid tropical Vertisol\n\n" . "text/html" . . . "Sorghum"@en . .