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| Publication Type:
| Proceedings |
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| Author(s): | Blazquez, Carlos H. |
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| Author Affiliation: | Associate Professor, Fruit Crops Department, Citrus & Research Center, Lake Alfred, FL |
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| Title: | Measuring color of plants and their photographs |
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| Meeting Info.: | Tampa, FL: October 8-11, 1989 |
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| Source: | Proceedings of the Florida Turfgrass Conference. Vol. 39, 1991, p. 111-117. |
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| Publishing Information: | Orlando, FL: Florida Turfgrass Association |
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| # of Pages: | 7 |
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| Keywords: | TIC Keywords: Electromagnetic radiation; Ultraviolet radiation; Light; Spectrophotometry; Densitometer; Radiometers; Radiometry
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| Geographic Terms: | Florida |
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| Abstract/Contents: | "Electromagnetic energy received from the sun ranges from the shortest wavelengths (gamma rays) to the longest frequency radio waves. Within this very broad band of energy is the photographic and visible spectrum of light (15, 22). In the visible part of the spectrum, white light ranges from 0.4 to 0.7 microns (m), and when passes through a prism, is refracted into its component wavelengths, the primary colors, blue, green, and red (14,15). The photographic spectrum ranges from the shortest wavelengths, ultraviolet (0.3 m), to the longest, the near infrared (0.9 m) (10, 15, and 22). Radiometric and densitometric measurements are very useful in measuring light reflectance and transmittance because they are consistent and more accurate than visual graders or photointerpreters. There have been considerable differences in visual grading and photointerpretation of damage and disease assessment of single plants (17), similar to problems in estimating losses in large groves (4). These differences can be minimized by measurement of reflectance...Radiometric and densitometric measurements may be useful tool in measuring changes of pine trees as a result of fungicide/fertilizer tree injections." |
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| Language: | English |
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| References: | 22 |
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| See Also: | See also Part 1, "Microinjection chemotherapy trials and results", p. 109-111, R=38056 R=38056 |
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| Note: | Part 2 of "Microinjection Chemotherapy trials and the Potential for Remote Sensing Assessment of Declining Pine Trees on Florida Golf Courses".
Figures |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Blazquez, C. H. 1991. Measuring color of plants and their photographs. p. 111-117. In Proceedings of the Florida Turfgrass Conference. Tampa, FL: October 8-11, 1989. Orlando, FL: Florida Turfgrass Association. |
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MSU catalog number: SB 433 .F53 |
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