TY - JOUR
T1 - Roller-Crimper Termination for Legume Cover Crops in North Carolina
T2 - Impacts on Nutrient Availability to a Succeeding Corn Crop
AU - Parr, Mary
AU - Grossman, Julie M.
AU - Reberg-Horton, S. Chris
AU - Brinton, Carrie
AU - Crozier, Carl
PY - 2014/4
Y1 - 2014/4
N2 -
Nitrogen (N) release from roll-killed legume cover crops was determined for hairy vetch (Vicia villosa Roth), crimson clover (Trifolium incarnatum L.), and a hairy vetch + rye (Secale cereale L.) 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 mays L.). 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.
AB -
Nitrogen (N) release from roll-killed legume cover crops was determined for hairy vetch (Vicia villosa Roth), crimson clover (Trifolium incarnatum L.), and a hairy vetch + rye (Secale cereale L.) 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 mays L.). 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.
KW - Legume cover crops
KW - N mineralization
KW - N synchrony
KW - Trifolium incarnatum
KW - Vicia villosa
KW - nutrient cycling
KW - organic cropping systems
UR - http://www.scopus.com/inward/record.url?scp=84899455528&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84899455528&partnerID=8YFLogxK
U2 - 10.1080/00103624.2013.867061
DO - 10.1080/00103624.2013.867061
M3 - Article
AN - SCOPUS:84899455528
SN - 0010-3624
VL - 45
SP - 1106
EP - 1119
JO - Communications in Soil Science and Plant Analysis
JF - Communications in Soil Science and Plant Analysis
IS - 8
ER -
