Nitrogen Mineralization from Brassica Cover Crops
| dc.contributor.advisor | Weil, Ray | en_US |
| dc.contributor.author | Kremen, Amy | en_US |
| dc.contributor.department | Plant Science and Landscape Architecture (PSLA) | en_US |
| dc.contributor.publisher | Digital Repository at the University of Maryland | en_US |
| dc.contributor.publisher | University of Maryland (College Park, Md.) | en_US |
| dc.date.accessioned | 2006-09-12T05:50:14Z | |
| dc.date.available | 2006-09-12T05:50:14Z | |
| dc.date.issued | 2006-07-27 | en_US |
| dc.description.abstract | The potential of forage radish (<em>Raphanus sativus</em> L.), rape (<em>Brassica napus</em> L.), and rye (<em>Secale cereale</em> L.) cover crops to capture residual nitrogen and then provide early season N to subsequent main crops via mineralization from their residues was compared. At four field experiments established in Maryland (2003-2005), N uptake by radish and rape equaled or exceeded that by rye. No differences in soil inorganic N due to cover crop type were observed during spring 2004. In spring 2005, greatest N release from forage radish residues (March-May) was followed by that from rape residues (May-June). Brassica decay significantly increased growth of immature corn and soybean plants. In a 48-day incubation study comparing N mineralization in fine and coarse textured soils from Brassica and rye root or shoot residues, N mineralization was greatest from forage radish and rape shoots. Compared with rye, the Brassica cover crops showed environmental and agronomic promise. | en_US |
| dc.format.extent | 1207034 bytes | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.uri | http://hdl.handle.net/1903/3821 | |
| dc.language.iso | en_US | |
| dc.subject.pqcontrolled | Agriculture, Soil Science | en_US |
| dc.subject.pqcontrolled | Agriculture, Agronomy | en_US |
| dc.subject.pquncontrolled | Brassica cover crops | en_US |
| dc.subject.pquncontrolled | carbon and nitrogen mineralization | en_US |
| dc.subject.pquncontrolled | nitrogen cycling | en_US |
| dc.title | Nitrogen Mineralization from Brassica Cover Crops | en_US |
| dc.type | Thesis | en_US |
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