Evaluation of a portable chlorophyll meter to estimate chlorophyll and nitrogen contents in sugar maple (Acer saccharum Marsh.) leaves

By A. V. D. Berg, T. Perkins. 2004

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FIELD EVALUATION OF THE RELATIONSHIP BETWEEN CHLOROPHYLL CONTENT IN BASIL LEAVES AND A PORTABLE CHLOROPHYLL METER (SPAD-502) READINGS (2010, background): “…and total chlorophyll values, the correlation coefficients (r) or coefficients of determination (R2) values reported here, were not increased such as those reported in sugar maple leaves by Van den Berg and Perkins (2004), who found that this model increased the r 2 value from 0.76 to 0.81.”
A comparison between different chlorophyll content meters under nutrient deficiency conditions (2017, methodology): “The ability to estimate chlorophyll in the leaves of sugar maple by a CCM-200 was analyzed by van den Berg and Perkins (2004).”
Effect of fertilizer application on photosynthesis and oil yield of Jatropha curcas L. (2010, methodology): “The nondestructive measurement of the leaf Chl content was carried out using a hand-held Chl content meter (CCM200, Opti-Sciences, Hudson, NH, USA) on selected leaves (van den Berg and Perkins 2004) of J. curcas.”