Schellenberg, D. L.Morse, R. D.Welbaum, Gregory E.2016-04-192016-04-192009Renewable Agriculture and Food Systems 24: 85 - 911742-1705http://hdl.handle.net/10919/69115Metadata only recordLittle information is available about how farmers in transition to organic practices should manage short- and long-term N fertility. The objectives of this research were (1) to evaluate the leguminous cover crops lablab (Dolichos lablab L.), soybean (Glycine max L.), sunn hemp (Crotalaria juncea L.) and a mixture of sunn hemp and cowpea (Vigna sinensis Endl.) as N sources; (2) to compare N availability and broccoli yield when cover crops were incorporated with conventional tillage (CT) or retained as a surface mulch using no-tillage (NT) practices; and (3) to quantify the amount of supplemental sidedress nitrogen required to maximize the yield of organic broccoli (Brassica oleracea Group Italica) on transition soils. Broccoli was grown during the first year after organic transition in the spring and fall of 2006 at the Kentland Agricultural Research Farm near Blacksburg, VA. Spring (Ptext/plainen-USIn CopyrightSoil managementSoil fertilitySoil qualityConservation tillageOrganic farmingOrganic productionBroccoliLablabDolichos lablab L.SoybeansGlycine max l.Sunn hempCrotalaria juncea l.VirginiaOrganic transitionField ScaleAbstractCopyright 2009 Cambridge University Presshttps://doi.org/10.1017/S1742170508002470