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Caixi Zhang, Kenji Tanabe, Hiroko Tani, Hiromitsu Nakajima, Minori Mori, and Emi Sakuno

adjusted to a pH of 6 to 7 and was partitioned against hexane three times. The pooled aqueous residue was then adjusted to pH 2.5 with HCl and partitioned against ethyl acetate. The pooled ethyl acetate phase was partitioned against a potassium phosphate

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Metin Turan, Ertan Yildirim, Melek Ekinci, and Sanem Argin

each sample; PH2, SC2, RE, and FU). NPK was applied in all treatments, including the control. Table 1. Properties and composition of soils used in the study. Table 2. Biostimulant treatments. The coating of seeds was achieved as follows: seeds were

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Erin P. Moody, John M. Dole, and Jared Barnes

)] in tap water (pH 2.8, EC 0.49 dS·m −1 ); 3) 10 g·L −1 a propriety mixture of sugar, acidifier and a biocide [FLO (Floralife ® Crystal Clear packets; Floralife, Walterboro, SC)] in tap water (pH 3.1, EC 0.50 dS·m −1 ); 4) deionized water (pH 3.8, EC

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Agnieszka Masny, Edward Żurawicz, and Jarosław Markowski

interlinked columns Supelco LC-18 (250 × 4 mm); 30 °C; mobile phase: 1% phosphoric buffer (pH = 2.5), flow rate: 0.8 mL·min −1 . Anthocyanins were determined by pH differential method ( Wrolstadt, 1976 ) with Cary 300E spectrophotometer (Varian, Australia

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Malkeet S. Padda and David H. Picha

Waters 600E pump (Waters Corp., Milford, MA). Phenolic acids were eluted using a mobile phase consisting of 1% (by volume) formic acid in aqueous solution: acetonitrile: 2-propanol (70:22:8), pH 2.5. The column temperature was set to 30 °C and an

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William L. Berndt and Joseph M. Vargas Jr

.L. Methods of soil analysis. Part 2 2nd Ed Agron. Monogr. 9. ASA and SSSA Madison, WI Landschoot, P. 2007 Managing soil pH in turf Grounds Maintenance, Penton Media, Inc 21 Nov. 2007 < http://grounds-mag.com/mag/grounds_maintenance_managing_soil_ph

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Seth DeBolt, Renata Ristic, Patrick G. Iland, and Christopher M. Ford

chromatography (HPLC) separation of tartaric, malic, and oxalic acids was achieved using a Prevail Organic Acid column 250 × 4.6 mm, 5-μm (Alltech Associates, Deerfield, IL); the mobile phase was 25 m m KH 2 PO 4 adjusted to pH 2 with phosphoric acid at a flow

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Margaret Worthington and John R. Clark

each harvest date. Soluble solids content was calculated using a refractometer. Titratable acidity and pH were measured by Metrohm 800 Dosino 862 compact titrosampler and electrode standardized to pH 2.00, 4.00, 7.00, and 10.00 buffers (Metrohm AG

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Malkeet S. Padda and D.H. Picha

were eluted using a mobile phase consisting 1% (v/v) formic acid in aqueous solution: acetonitrile: 2-propanol (70:22:8), pH 2.5. Isocratic elution was performed with a flow rate of 0.75 mL·min −1 . Peaks were detected at 320 nm using a Waters 2487 dual

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James E. Altland and Charles Krause

. Fig. 1. Relationship between substrate pH and chlorophyll meter readings (SPAD-502; Minolta, Ramsey, NJ) or shoot dry weight (SDW) of ‘Pacifica Blush’ annual vinca grown in switchgrass substrates; SPAD = −2.29 × pH 2 + 29.10 × pH − 38.09, R 2 = 0