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Michael V. Mickelbart

grinder. Nitrogen was analyzed using the Dumas combustion procedure ( Simonne et al., 1994 ). All other elements were digested with 1.0 mL of HNO 3 at 110 °C for 4 h and quantified by inductively coupled plasma spectrometry on a PerkinElmer Elan DRCe ICP

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Xia Chun-hua and Chen Jian-hua

, adsorption, and chemical activity ( Liu, 2004 ) , and can adsorb ammonium nitrogen (NH 4 + −N). The use of oyster shell in the preparation of slow-release nitrogen fertilizer ( Miao et al., 2007 ) can also alleviate the loss of N. The soilless cultivation of

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Lauren M. Garcia Chance, Joseph P. Albano, Cindy M. Lee, Staci M. Wolfe, and Sarah A. White

Nursery and greenhouse crop production often results in high concentrations of nutrients within production runoff. Effluent nutrient concentrations can range from 0.1 to 387 mg·L −1 nitrate-nitrogen (NO 3 -N), 0.9 to 47 mg·L −1 ammoniacal-nitrogen

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Mary Jane Clark and Youbin Zheng

to minimize NO 3 -N leachate from container-grown Forsythia HortScience 44 1833 1837 Birrenkott, B.A. Craig, J.L. McVey, G.R. 2005 A leach collection system to track the release of nitrogen from controlled-release fertilizers in container ornamentals

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Elizabeth A. Perkus, Julie M. Grossman, Anne Pfeiffer, Mary A. Rogers, and Carl J. Rosen

above concerns, high tunnel producers commonly use compost derived from animal manure for nitrogen (N) fertility ( Gheshm and Brown, 2018 ; Knewtson et al., 2010 ), which can lead to excess soil phosphorus and high salinity ( Montri and Biernbaum, 2009

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Christian A. Wyenandt, Joseph R. Heckman, and Nancy L. Maxwell

through tipping fees paid by municipalities to farmers averaging $3.00/yard 3 ( Derr and Kluchinski, 1995 ). However, a potential concern with the use of municipal leaves as a soil-surface mulch in vegetable production is the high carbon to nitrogen ratio

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Genhua Niu, Denise Rodriguez, and Mengmeng Gu

widely available from the nursery industry. There is little research-based information for Texas mountain laurel regarding its culture information, especially nutrient requirement. Nitrogen is a key nutrient in manipulating plant growth and N is normally

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Mary Jane Clark and Youbin Zheng

OG at 10.2 g/pot N and growing substrate EC and pH were observed in 2015 or 2016. Fig. 1 Concentration of nitrate nitrogen (NO 3 -N), ammonium-nitrogen (NH 4 -N), phosphorus (P), and potassium (K) during the 2015 and 2016 growing seasons in the root

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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

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E.A. Guertal

A brief review of slow-release fertilizer technology Slow-release nitrogen fertilizers can be separated into three broad categories. The first is “natural” organic fertilizer, with the N contained as a part of crop residue, animal waste, or other