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Published online 18 May 2006
Published in Crop Sci 46:1536-1545 (2006)
© 2006 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Winter Cover Crops in Illinois

Evaluation of Ecophysiological Characteristics of Corn

Fernando E. Miguez and German A. Bollero*

Dep. of Crop Sciences, Univ. of Illinois, 1102 S. Goodwin Ave., Urbana, IL 61801


Figure 1
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  		Fig. 1. Weather conditions for 2002 and 2003 growing seasons and 12-yr average at Urbana, IL.

 

Figure 2
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  		Fig. 2. At corn stage V9, number of leaves for corn following no cover (NC), rye (R), hairy vetch (HV), and hairy vetch–rye biculture (HV–R) with four nitrogen fertilizer rates at Urbana, IL. SED = standard error of the difference.

 

Figure 3
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  		Fig. 3. Relationship between light interception for corn following no cover (NC), rye (R), hairy vetch (HV), and hairy vetch–rye biculture (HV–R) against days after planting with four nitrogen fertilizer rates (NFR) at Urbana, IL. A plot of raw residuals and predicted values is included.

 

Figure 4
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  		Fig. 4. Relationship between carbon dioxide exchange rate (CER) and growing degree days for corn following no cover (NC), rye (R), hairy vetch (HV), and hairy vetch-rye biculture (HV-R) with four nitrogen fertilizer rates (NFR) at Urbana, IL. A plot of raw residuals and predicted values is included.

 

Figure 5
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  		Fig. 5. Relationship between corn grain yield and nitrogen fertilizer for corn following no cover (NC), rye (R), hairy vetch (HV), and hairy vetch–rye biculture (HV–R) at Urbana, IL. A plot of raw residuals and predicted values is included.

 




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