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Luther C. Carson, Monica Ozores-Hampton, Kelly T. Morgan, and Steven A. Sargent

Smajstrla and Muñoz-Carpena (2011) . Beginning at first flower (13 Sept. 2011 and 24 Sept. 2012), six most recently fully mature leaves were collected from each plot in ≈15-d intervals for seven total collections. The leaf tissue was dried at 50 °C and

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Youssef Rouphael and Giuseppe Colla

, 2003 ). Seeds were germinated in vermiculite on 22 Aug. The seedlings were transplanted 15 d after sowing (6 Sept.) at the two true-leaf stage into pots (diameter 17 cm, height 19 cm) containing 3.4 L of a mixture peat–pumice (pumice have a particle

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Russell Galanti, Alyssa Cho, Amjad Ahmad, and Javier Mollinedo

. Regression analysis for foliar nitrogen (N) concentration by chlorophyll meter (SPAD) value for eight ‘Kakea’ macadamia trees sampled on 12 Apr. 2017 and 50 ‘Kakea’ macadamia trees sampled on 15 June 2017 and 20 Feb. 2018 in Kapa’au, HI. Table 2. One

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Mary Jane Clark and Youbin Zheng

growing substrate for each pot by hand at rates of 0.15, 0.45, 0.75, 1.05, 1.35, or 1.65 kg·m −3 nitrogen. The guaranteed minimum analysis of this CRF is 8.09% ammonical N, 7.16% nitrate N, 3.75% urea N, 6.00% phosphoric acid, 13.00% soluble potash, 4

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Catherine S. Fleming, Mark S. Reiter, Joshua H. Freeman, and Rory Maguire

irrigation events. Nitrogen rates used in fertigation increased as the growing season progressed to match plant N uptake ( Wilson et al., 2012 ). Fertigated N was applied at 0.50, 0.70, 1.00, 1.50, 2.20, and 2.43 lb/d N for time periods 0–14, 15–28, 29–42, 43

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Lauren Lindsey, Raymon Shange, Ramble O. Ankumah, Desmond G. Mortley, and Sangita Karki

Northern Region, Ghana J. Ghana Sci. Assoc. 17 9 15 Mortley, D.G. Hill, W.A. 1990 Sweetpotato growth and nitrogen content following nitrogen application and inoculation with Azospirillum HortScience 25 758 759 Ndiaye, E.L. Sandeno, J.M. McGrath, D. Dick, R

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Diane M. Camberato, James J. Camberato, and Roberto G. Lopez

Potted annual bedding and garden plants represented a $1.33 billion wholesale value in the 15 top-producing states [ U.S. Department of Agriculture (USDA), 2012] . New varieties have been released at a rapid rate motivated by the 48% market share

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Mary Jane Clark and Youbin Zheng

HortScience 40 1887 1891 Broschat, T.K. 2005 Rates of ammonium-nitrogen, nitrate-nitrogen, phosphorus, and potassium from two controlled-release fertilizers under different substrate environments HortTechnology 15 332 335 Cabrera, R. 1997 Comparative

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May Elfar Altamimi, Rhonda R. Janke, Kimberly A. Williams, Nathan O. Nelson, and Leigh W. Murray

petiole sap in vegetables. Petiole sap nitrate-nitrogen (PSNN) levels associated with maximum growth rate or yield have been determined for vegetable crops like cabbage ( Brassica oleracea L. Capitata group) ( Gardner, 1989a ; Schulbach et al., 2007

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Daniel Leskovar and Yahia A. Othman

Plant nutritional status, specifically nitrogen (N), plays key roles in olive growth and productivity ( Rodrigues et al., 2011a ). Plants develop unique physiological and diverse developmental mechanisms that control N root uptake capacity, adapting