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Chang-Tsern Chen, Ching-Lung Lee, and Der-Ming Yeh

Complete nutrient solution (control). Eustoma plants with the complete nutrient solution had maximum growth as measured by plant height, node number, total leaf area, SPAD-502 reading, and plant dry weights ( Tables 2 and 3 ). Plants grew well and

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Youping Sun and Alyssa Lanae Palmer

damage ( Sun et al., 2015 ). The foliar salt damage rating did not consider plant size. Chlorophyll content. Relative chlorophyll content [Soil-Plant Analysis Development (SPAD) reading] was measured using a handheld chlorophyll meter (SPAD 502 Plus

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Giorgio Gianquinto, Francesco Orsini, Paolo Sambo, and Matilde Paino D'Urzo

provided with a photometer to obtain an indication of the chlorophyll content of the leaf. Readings are collected from a sample of several leaves. These tools are mainly represented by the SPAD 502 CM (Minolta, Osaka, Japan), the N-tester (Yara

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Gitta Shurberg, Amy L. Shober, Christine Wiese, Geoffrey Denny, Gary W. Knox, Kimberly A. Moore, and Mihai C. Giurcanu

content (SPAD) was estimated every 6 weeks using a portable chlorophyll meter (SPAD-502; Minolta Corp., Ramsey, NJ). Six readings were taken per plant cluster (two readings per plant) and averaged. Fisher et al. (2003) reported that SPAD is an indirect

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Guihong Bi, William B. Evans, James M. Spiers, and Anthony L. Witcher

., Ramsey, NJ). For each plant, three recently fully expanded leaves were randomly chosen for SPAD measurement and the average of the three readings was recorded. Plant growth index [(height + widest width + perpendicular width) ÷ 3] and number of fully open

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Ertan Yildirim, Huseyin Karlidag, Metin Turan, Atilla Dursun, and Fahrettin Goktepe

oven at 70 °C until a constant mass was reached. Chlorophyll readings. A portable chlorophyll meter (SPAD-502; Konica Minolta Sensing, Inc., Japan) was used to measure leaf greenness. SPAD-502 chlorophyll meter estimates total chlorophyll amounts in

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W.A. Mackay, S.W. George, C. McKenney, J.J. Sloan, R.I. Cabrera, J.A. Reinert, P. Colbaugh, L. Lockett, and W. Crow

measurements of relative leaf chlorophyll levels. These measurements, done on a monthly basis in recently matured tissue [leaves in upper portion of current shoots; 20 readings per plant (two readings per leaf); four plants per cultivar], were taken with a SPAD

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Shuresh Ghimire, Edward Scheenstra, and Carol A. Miles

weight per square meter for standard reporting. Plant growth. Plant height from the soil surface to the top vegetative point, and Soil Plant Analysis Development (SPAD) readings (SPAD-502 Chlorophyll Meter; Minolta, Osaka, Japan) were recorded from five

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Gitta Shurberg, Amy L. Shober, Christine Wiese, Geoffrey Denny, Gary W. Knox, Kimberly A. Moore, and Mihai C. Giurcanu

chlorophyll content (SPAD). A portable chlorophyll meter (SPAD-502; Minolta Corp., Ramsey, NJ) was used to estimate plant chlorophyll content every 6 weeks for bush daisy, lantana, salvia, and liriope. Six SPAD readings (unitless) were taken on mature leaves

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Youping Sun, Genhua Niu, Christina Perez, H. Brent Pemberton, and James Altland

damage ( Sun et al., 2015 ). Foliar salt damage rating did not consider plant size. Leaf relative chlorophyll content. Relative chlorophyll content [soil plant analysis development (SPAD) reading] was recorded using a handheld chlorophyll meter [measured