Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Published online 7 February 2006
Published in Agron J 98:245-254 (2006)
DOI: 10.2134/agronj2005.0013
© 2006 American Society of Agronomy
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Right arrow Nitrogen
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Recovery of Nitrogen-15–Labeled Hairy Vetch and Fertilizer Applied to Corn

Jong-Ho Seoa, J. J. Meisingerb,* and Ho-Jin Leec

a National Inst. of Crop Sci., Rural Development Admin., Suwon 441-857, Korea
b USDA-ARS, Animal and Natural Resources Inst., Beltsville, MD 20705
c College of Agric. and Life Sci., Seoul National Univ., Seoul 151-911, Korea


Figure 1
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  		Fig. 1. Climate and weather data for Suwon Korea. (a) Long-term 30-yr climate data for 10-d intervals throughout the growing season. Total monthly precipitation is listed below each month. (b) Rainfall data at National Crop Experiment Station for 10-d intervals in 1999 (solid line) and 2000 (dashed line). Dates of 1999 agronomic operations and monthly total rainfalls are listed below each month.

 

Figure 2
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  		Fig. 2. Recovery of N sources at the end of the growing season in corn and in the soil (0–15 cm) for three N management strategies using 13.3 g N m–2 fertilizer N at planting plus sidedress N (FN + SD), 13.3 g N m–2 hairy vetch N at planting plus sidedress fertilizer (HVx1.0 + SD), and 20 g N m–2 hairy vetch N at planting plus sidedress fertilizer (HVx1.5 + SD). Detailed descriptions of the main treatments are given in Table 2.

 




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