Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Published online 19 September 2005
Published in Agron J 97:1403-1412 (2005)
DOI: 10.2134/agronj2004.0274
© 2005 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Biculture Legume–Cereal Cover Crops for Enhanced Biomass Yield and Carbon and Nitrogen

Upendra M. Sainjua,*, Wayne F. Whiteheadb and Bharat P. Singhb

a USDA-ARS-NPARL, 1500 North Central Ave., Sidney, MT 59270
b Agric. Res. Stn., Fort Valley State Univ., Fort Valley, GA 31030



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  		Fig. 1. (A) Average monthly temperature and (B) total monthly rainfall from October to April 1999 to 2002 and the 41-yr average in Fort Valley, GA.

 


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  		Fig. 2. Biomass yield in (A) 2000, (B) 2001, and (C) 2002 and C content in (D) 2000, (E) 2001, and (F) 2002 in belowground biomass of cover crops from 0- to 120-cm soil depth. Weeds denote winter weeds; rye, cereal rye; vetch, hairy vetch; and vetch/rye, hairy vetch–rye biculture. LSD (0.05) denotes least significant difference between cover crops at P ≤ 0.05.

 


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  		Fig. 3. Nitrogen content in (A) 2000, (B) 2001, and (C) 2002 and C/N ratio in (D) 2000, (E) 2001, and (F) 2002 in belowground biomass of cover crops from 0- to 120-cm soil depth. Weeds denote winter weeds; rye, cereal rye; vetch, hairy vetch; and vetch/rye, hairy vetch–rye biculture. LSD (0.05) denotes least significant difference between cover crops at P ≤ 0.05.

 




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