Calibration of the Minolta SPAD-502 leaf chlorophyll meter

By J. Markwell, J. Osterman, J. Mitchell. Photosynthesis Research, 2004

938 citations recorded by the source corpus.

Subfields: Ecology, Global and Planetary Change, Plant Science

View Paper: https://www.semanticscholar.org/paper/796f069542a832a8a3789bf9868d3517f41879ff

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Citations in the corpus

Potato Crop Nitrogen Status Assessment to Improve N Fertilization Management and Efficiency: Past–Present–Future (2008, background): “It is well established that values measured by a SPAD chlorophyll meter provide a good estimate of the amount of chlorophyll present in the potato plant leaf (Vos and Bom 1993) or for other crops (Markwell et al. 1995), confirming the good accuracy of the meter.”
Growth and Physiological Responses of Landscape Plants to Saline Water Irrigation: A Review (2010, background): “By measuring the light transmission at the wavelengths of 650 and 940 nm, a SPAD value ranging from 0 to 100 is generated to estimate leaf chlorophyll concentration (Markwell et al., 1995).”
A comparison between different chlorophyll content meters under nutrient deficiency conditions (2017, background): “ces and leaf Chl concentration is nonlinear and must be recalculated (Markwell et al. 1995).”
Chlorophyll meter readings can predict nitrogen need and yield response of corn in the north-central USA (2006, background): “Its output is in arbitrary units and has been shown to be strongly related to leaf chlorophyll concentration ( Markwell et al., 1995 ).”
Relationships between leaf chlorophyll content and spectral reflectance and algorithms for non-destructive chlorophyll assessment in higher plant leaves. (2003, methodology): “These newer methods are non-destructive, inexpensive, quick and now possible in the field (Buschmann and Nagel 1993, Gitelson and Merzlyak 1994 a, b, Markwell et al. 1995, Gamon and Surfus 1999, Gitelson et al. 2001, 2002).”
Active Sensor Reflectance Measurements of Corn Nitrogen Status and Yield Potential (2008, background): “Its readings are strongly correlated with actual leaf chlorophyll levels as determined by biochemical methods (Markwell et al., 1995).”
Comparative analysis of three chemometric techniques for the spectroradiometric assessment of canopy chlorophyll content in winter wheat (2010, methodology): “From the upper leaves SPAD© readings Minolta, 2003) were taken and converted into leaf chlorophyll ontents (Markwell et al., 1995).”
Use of physiological parameters as fast tools to screen for drought tolerance in sugarcane (2007, methodology): “This index was used preferentially because the strong relationship between readings of portable chlorophyll meter and leaf chlorophyll content has been demonstrated by several authors (e.g. Yadava, 1986; Marquard and Tipton, 1987, Markwell et al., 1995).”
A novel method for the estimation of soybean chlorophyll content using a smartphone and image analysis (2016, result): “Another study with soybean plants found similar results with a close relationship between portable Chl meter measurements and Chl measured by the classical method (Markwell et al. 1995).”
Photosynthetic and structural characteristics of canopy and shrub trees in a cool-temperate deciduous broadleaved forest: Implication to the ecosystem carbon gain (2005, methodology): “Immediately after the gas exchange measurements, index of leaf chlorophyll content (SPAD) was measured (SPAD-502, Minolta, Japan; Markwell et al., 1995), and the leaves were collected to obtain leaf mass per area (LMA) for which leaf area was measured with a leaf area meter (LI-3100, Li-Cor, Inc., U”
Response of Chlorophyll, Carotenoid and SPAD-502 Measurement to Salinity and Nutrient Stress in Wheat (Triticum aestivum L.) (2017, background): “A relative SPAD-502 meter value (ranging from 0–99) is derived from the transmittance values, which is proportional to the chlorophyll content in the sample [75,80].”
Phenotypic plasticity rather than locally adapted ecotypes allows the invasive alligator weed to colonize a wide range of habitats (2007, positive): “The following quantitative traits were measured following the same protocol as in field survey: (1) leaf length, (2) leaf width, (3) stem diameter, (4) stem pith cavity diameter, (5) internode length, (6) SLA, and (7) relative chlorophyll content (RCC, measured using a chlorophyll meter, Minolta SPA”
Suitability of low-altitude remote sensing images for estimating nitrogen treatment variations in rice cropping for precision agriculture adoption (2007, methodology): “The SPAD 502 meter readings of leaf greenness were converted into chlorophyll content using the following equation for rice crops [21]:”