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A nondestructive method to monitor leaf greenness in corn
Abstract
A portable chlorophyll meter was calibrated with extractable chlorophyll measurements from six corn (Zea mays L.) hybrids, and the utility of the meter in identifying differences in leaf greenness was assessed in growth-cabinet and field studies. A single linear regression described the relationship between meter readings and extractable chlorophyll concentration for leaves of all hybrids at a range of growth stages (r 2 = 0.83). Meter measurements resolved differences in chlorophyll concentration of two additional test hybrids resulting from different temperature regimes in the growth-cabinet, and from different leaf positions and stages of development in the field (P < 0.01). Considerable replication of meter readings was found necessary to resolve treatment differences in chlorophyll concentration. Caution is advised in using the calibration at very low chlorophyll concentrations such as those occurring as the plant nears senescence. Key words: SPAD 501, chlorophyll, leaf senescence, linear regression
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Cited by
Uddling, J., Gelang-Alfredsson, J., Piikki, K., & Pleijel, H. (2007) · Photosynthesis Research · doi:10.1007/s11120-006-9077-5 · Cited by 885
Comparison of corn leaf nitrogen concentration and chlorophyll meter readings
Schepers, J. S., Francis, D. D., Vigil, M., & Below, F. E. (1992) · Communications in Soil Science and Plant Analysis · doi:10.1080/00103629209368733 · Cited by 441
Use of a Chlorophyll Meter to Monitor Nitrogen Status and Schedule Fertigation for Corn
Blackmer, T. M., & Schepers, J. S. (1995) · Journal of Production Agriculture · doi:10.2134/jpa1995.0056 · Cited by 403
Responsive in-season nitrogen management for cereals
Shanahan, J. F., Kitchen, N. R., Raun, W. R., & Schepers, J. S. (2008) · Computers and Electronics in Agriculture · doi:10.1016/j.compag.2007.06.006 · Cited by 300
Impact of nitrogen and environmental conditions on corn as detected by hyperspectral reflectance
Strachan, I. B., Pattey, E., & Boisvert, J. B. (2002) · Remote Sensing of Environment · doi:10.1016/s0034-4257(01)00299-1 · Cited by 287
Metadata
- Authors
- Dwyer, L. M., Tollenaar, M., & Houwing, L.
- Venue
- Canadian Journal of Plant Science
- Publisher
- Canadian Science Publishing
- Published
- 1991-04-01
- Volume
- 71
- Issue
- 2
- Pages
- 505-509
- ISSN
- 0008-4220 (ISSN-L)
- 1918-1833
- OpenAlex
- W1979596115
- Cited by
- 202
- References
- 0
- FWCI
- 1.92
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: A nondestructive method to monitor leaf greenness in corn. https://app.cochat.ai/papers/10.4141/cjps91-070
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- Dwyer, L. M., Tollenaar, M., & Houwing, L. (1991). A nondestructive method to monitor leaf greenness in corn. Canadian Journal of Plant Science. https://doi.org/10.4141/cjps91-070
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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