Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Published online 3 May 2006
Published in Agron J 98:666-674 (2006)
DOI: 10.2134/agronj2005.0105
© 2006 American Society of Agronomy
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Nitrogen Requirements for Flue-Cured Tobacco

Rosa Marchettia,*, Fabio Castellib and Renato Contilloc

a Agricultural Research Council, Agronomical Research Institute, Modena Section, Viale Caduti in Guerra 134, I-41100 Modena, Italy
b Agricultural Research Council, Institute for Tobacco Research, Bovolone Section, Via Canton 14, I-37051 Bovolone (Verona), Italy
c Agricultural Research Council, Institute for Tobacco Research, Via Pasquale Vitiello 66, I-84018 Scafati (Salerno)


Figure 1
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  		Fig. 1. Aboveground N removal by flue-cured tobacco throughout the crop growth season in (A) 1998 and (B) 1999 at Bovolone (Verona, northern Italy). Data collected at plant scale, relevant to all plots and fertilizer N rates, are reported. AGN = plant aboveground N removal, DAT = days after tobacco transplanting.

 

Figure 2
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  		Fig. 2. Mean inorganic N content in the top 0.8-m soil profile, throughout the tobacco growth season in 1998 and 1999 at Bovolone (Verona, northern Italy). Bars are the standard deviation (n = 10, at each date). Variability includes both treatment and random effects. In both years, fertilizer N was applied 2 wk after transplanting. The arrow indicates the time of fertilizer application.

 




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