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Roller-Crimper Termination for Legume Cover Crops in North Carolina: Impacts on Nutrient Availability to a Succeeding Corn Crop.
- Source :
-
Communications in Soil Science & Plant Analysis . Apr2014, Vol. 45 Issue 8, p1106-1119. 14p. - Publication Year :
- 2014
-
Abstract
- Nitrogen (N) release from roll-killed legume cover crops was determined for hairy vetch (Vicia villosa Roth), crimson clover (Trifolium incarnatumL.), and a hairy vetch + rye (Secale cerealeL.) biculture in an organic corn production system in North Carolina, USA. Cover crops were planted at two locations in fall 2008 and 2009, roll-killed in May, and no-till planted with corn (Zea maysL.). Inorganic soil N and mineral N flux were determined using potassium chloride (KCl) extractions and ion-exchange resin (Plant Root Simulator, PRS) probes at 2-week intervals for 12 weeks and compared to fertilized controls of 0 and 168 kg N ha−1. In 2009, greater plant available N under hairy vetch than under either 0 N control or crimson clover was found, with peak soil N occurring between 4 and 6 weeks after roll kill. Available soil N under crimson clover mulches was less than or equal to 0 N, suggesting net immobilization. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 00103624
- Volume :
- 45
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Communications in Soil Science & Plant Analysis
- Publication Type :
- Academic Journal
- Accession number :
- 95713148
- Full Text :
- https://doi.org/10.1080/00103624.2013.867061