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Xiaojie Zhao, Guihong Bi, Richard L. Harkess, Jac J. Varco, and Eugene K. Blythe

/N ratios ranked in the order of root > rhizome > leaf, which is contrary to the order of N concentration. Nitrogen concentration in leaves, roots, and rhizomes increased 1.3-, 1.5-, and 1.7-fold, respectively, as N rate increased from 0 to 20 m m , while C

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Michael W. Smith, Bruce W. Wood, and William R. Raun

blocking according to trunk diameter. Each treatment was replicated five times using single-tree plots. Sample times and tissues sampled. Nitrogen-treated and untreated control trees (for natural abundance 15 N determination) were sampled during

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Xiaojie Zhao, Guihong Bi, Richard L. Harkess, Jac J. Varco, Tongyin Li, and Eugene K. Blythe

Mar. 2013, 7 of the 15 plants that had received each 2012 N rate were fertigated twice per week for 6 weeks with 250 mL modified Hoagland’s solution containing 10 m m N from 15 NH 4 15 NO 3 . 15 Nitrogen-labeled fertilizer was used to distinguish

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Daniel T. Lloyd, Douglas J. Soldat, and John C. Stier

verdure and root samples were ground using a Wiley mill (Thomas Scientific, Swedesboro, NJ) to pass through a 0.25-mm sieve and packaged in tin capsules to contain 100 to 200 μg N for isotopic 15 N analysis using an automated carbon–nitrogen analyzer (PDZ

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Yang Fang, Jeffrey Williamson, Rebecca Darnell, Yuncong Li, and Guodong Liu

, Bremen, Germany). Nitrogen derived from fertilizer (NDFF) represented the total amount of N from labeled fertilizer absorbed by plants during a 14-d chase period after 15 N treatment. Fraction of total N derived from fertilizer (%NDFF) and NDFF were

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Jeremy R. Pinto, Rhiannon A. Chandler, and R. Kasten Dumroese

., 2002 ). In a leaching study during conifer seedling production, 11% to 19% of applied nitrogen (N) and 16% to 64% of applied phosphorus (P) were recovered in collected leachate ( Juntenen et al., 2002 ). Similarly, 46% to 65% of applied N was recovered

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Amir Ali Khoddamzadeh and Bruce L. Dunn

potted chrysanthemums was more than $125 million in 2012 ( U.S. Department of Agriculture, 2013 ). Chrysanthemums have a high N requirement ( Lunt and Kofranek, 1958 ). Nitrogen is a macronutrient that affects plant chlorophyll content ( Moorby and

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Lois C. Braun, Jeffrey H. Gillman, and Michael P. Russelle

of N 15 -labelled ammonia and nitrate in young Jonathan/MM104 apple trees grown in solution cultures Plant Soil 35 95 112 Gray, D. Garrett, H.E.G. 1999 Nitrogen fertilization and aspects of fruit yield in a Missouri black walnut alley cropping

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Martin P.N. Gent

, water uptake varied with shade and duration from 2.2 to 1.5 L·d −1 , whereas in 2005, water uptake only varied with shade density from 2.2 to 1.8 L·d −1 ( Fig. 2 ). There were also differences between years in uptake of nitrogen and potassium within

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Sueyde Fernandes de Oliveira Braghin, Simone C. Mello, Jéssika Angelotti-Mendonça, Keigo Minami, and Yuncong C. Li

quality, increasing the fertilizer use efficiency and preventing losses of nutrients, especially nitrogen (N) by leaching or denitrification ( Fageria and Baligar, 2005 ). CRFs are designed to release nutrients into the grown medium at a rate more closely