"1870","9","archive","14",,,"disk0/00/00/18/70","2011-09-26 03:02:44","2013-12-19 03:59:20","2011-09-26 03:02:44","article",,,"show","Library-ICRISAT@cgiar.org",,,"","","","","","","","","","","0",,,"Rego","T J","","","","","","","Rego","T J","","","","",,,,,"","",,,,,"","","ICRISAT(Patancheru)","India","Long-term effects of grain legumes on rainy-season sorghum productivity in a semi-arid tropical Vertisol","pub","s1.4","","","restricted",,,,,,"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",,,"Experimental Agriculture","36","2",,,"205-221",,,,,,,,,,,"TRUE",,,,,,,,"","http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=2575","http://scholar.google.co.in/scholar?as_q=Long-term+effects+of+grain+legumes+on+rainy-season+sorghum+productivity+in+a+semi-arid+tropical+Vertisol&num=10&btnG=Search+Scholar&as_epq=&as_oq=&as_eq=&as_occt=title&as_sauthors=&as_publication=&as_ylo=&as_yhi=&a","author",,"","",,,,,,"",,,,,,,"",,,,,"",,,,,"","",,,,,"","",,,,,
"1870",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,"Nageswara Rao","V","","",,,,,"Nageswara Rao","V","","",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,