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Effects of catch crop type and root depth on nitrogen leaching and yield of spring barley Organic Eprints
Sapkota, Tek Bahadur; Askegaard, Margrethe; Lægdsmand, Mette; Olesen, Jørgen Eivind.
Catch crop root growth and nitrogen (N) uptake from both shallower and deeper soil layers is important for N management in arable farming system particularly in climates where excess winter precipitation induces N leaching. We simulated the root growth and biomass yield of three common catch crops [chicory (Cichorium intybus L.), fodder radish (Raphanus sativus L.) and perennial ryegrass (Lolium perenne L.)] and their effect on soil mineral N in different soil layers by using the FASSET model. The simulated results of catch crops root growth and mineral N in the soil profile were validated against two years (i.e. 2006 and 2007) of observations taken in Foulum and Flakkebjerg, Denmark. Fodder radish had the deepest root system and depleted N from deeper...
Tipo: Journal paper Palavras-chave: Crop combinations and interactions Cereals; Pulses and oilseeds Air and water emissions.
Ano: 2011 URL: http://orgprints.org/18766/1/18766.pdf
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