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Tongyin Li, Guihong Bi, Richard L. Harkess, Geoffrey C. Denny, Eugene K. Blythe, and Xiaojie Zhao

® azalea ‘Chiffon’ plants were fertilized with 0, 5, 10, 15, or 20 m m nitrogen from ammonium nitrate and grown in plastic containers or paper biocontainers. Different lower case letters on top of each bar suggest significant difference compared by Fisher

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Mohammed B. Tahboub, William C. Lindemann, and Leigh Murray

corresponded to the amount of pruning wood typically observed on the ground from light to heavy pruning. The inorganic nitrogen (ammonium sulfate) treatment (N1) included rates of nitrogen at 15.2, 30.5, 45.7, and 61.0 kg·ha −1 to adjust the C : N ratio of

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Dale A. Devitt, Lena Wright, Daniel C. Bowman, Robert L. Morris, and Michelle Lockett

water because it carries a significant salt and nitrogen load. Although the nitrogen load should be viewed as a positive trait for turfgrass managers, it does mean that conventional applications of nitrogen must be properly adjusted. Nitrogen

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Christian M. Baldwin, A. Douglas Brede, and Jami J. Mayer

profile was a Garrison gravelly silt loam (fine-loamy, mixed, superactive, calcareous, hyperthermic, Typic, Torrifluvent). Plots were fertilized at a yearly rate of 171 lb/acre N using a 15N–6.6P–12.5K fertilizer; however, the last application was 1 month

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Laban K. Rutto, Myong-Sook Ansari, and Michael Brandt

and Ca that were significantly different at N application levels of 1.5 g/pot N and higher (data not included). Table 2. Leaf mineral content in stinging nettle plants grown under greenhouse conditions in media amended with different levels of nitrogen

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Tongyin Li, Guihong Bi, Richard L. Harkess, Geoffrey C. Denny, and Carolyn Scagel

effect of N rate on total root length ( Fig. 4B ). Nitrogen rates of 15 and 20 m m resulted in greater root length than 0 or 5 m m N regardless of irrigation frequency. Irrigation frequency influenced root length only at 10 and 15 m m N. More frequent

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Yun-wen Wang, Bruce L. Dunn, Daryl B. Arnall, and Pei-sheng Mao

. Rozbicki, J. 2002 Use of nitrogen sufficiency index for calibration of a chlorophyll meter SPAD-502 readings in winter triticale 709 710 Proc. VII Congress of the European Soc. for Agron. 15–18 July 2002 Cordoba, Spain Seemann, J.R. Sharkey, T.D. Wang, J

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Fátima Medina-Lara, Ileana Echevarría-Machado, Ramón Pacheco-Arjona, Nancy Ruiz-Lau, Adolfo Guzmán-Antonio, and Manuel Martinez-Estevez

and a 15% decrease in new leaves. Fig. 4. Effect of nitrogen (N) and potassium (K) fertilization on endogenous ( A ) K and ( B ) N contents in the leaves and roots of habanero pepper plants. Each value represents the average of five replicates

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Bielinski M. Santos, John W. Scott, and Maricruz Ramírez-Sánchez

significantly over the last few years ( U.S. Department of Agriculture, 2009b ), which forced the tomato industry to reevaluate current rates in an attempt to reduce production costs. Nitrogen is the most applied nutrient on per weight basis in tomato and is

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Nicholas Menchyk, Douglas G. Bielenberg, Samuel Martin, Clint Waltz, Hong Luo, Frank Bethea Jr., and Haibo Liu

Sept. 2009 and 20 May to 25 Aug. 2010 at The Cliffs Communities Turfgrass Research Facility in Marietta, SC. ‘Diamond’ zoysiagrass plots measuring 0.91 m × 3.7 m were constructed according to USGA putting green specifications with an 85:15 (sand