| |
| Web URL(s): | https://www.crops.org/publications/cs/pdfs/38/6/CS0380061603
Last checked: 08/05/2010
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
|---|
| Publication Type:
| Refereed |
|---|
| Author(s): | Green, D. E. II;
Burpee, L. L.;
Stevenson, K. L. |
|---|
| Author Affiliation: | Michigan State University, 102 Pesticide Research Center, East Lansing, MI 48824; Department of Plant Pathology, 1109 Experiment Street, Georgia Station, Griffin, GA 30223-1797; and University of Georgia, Department of Plant Pathology, Miller Plant Sciences Building, Athens, GA 30606 |
|---|
| Title: | Canopy reflectance as a measure of disease in tall fescue |
|---|
| Section: | Turfgrass science
Other records with the "Turfgrass science" Section
|
|---|
| Source: | Crop Science. Vol. 38, No. 6, November/December 1998, p. 1603-1613. |
|---|
| Publishing Information: | Madison, WI: Crop Science Society of America |
|---|
| # of Pages: | 11 |
|---|
| Keywords: | TIC Keywords: Festuca arundinacea; Rhizoctonia solani; Pyricularia grisea; Reflectance; Disease severity; Measurement; Models
|
|---|
| Abstract/Contents: | "Measurement of changes in canopy reflectance of tall fescue (Festuca arundinacea Schreb.), which result from deterioration of tissues caused by disease organisms, is a potential unbiased method for quantifying disease. Canopy relectance in eight spectral bands between 430 and 840 nm and 18 vegetation indices derived from the spectral bands were regressed against visual severity estimates of Rhizoctonia blight, caused by Rhizoctonia solani Kühn, and gray leaf spot, caused by Pyricularia grisea (Cooke) Sacc. Reflectance within the 810-nm band exhibited the strongest relationship (19% ≤ r² ≤ 63%) with visual severity estimates of Rhizoctonia blight and gray leaf spot. Reflectance in the visible or near infra-red wavelengths was similar to tall fescue blighted by either fungal pathogen. A significant (P ≤ 0.05) negative linear relationship was observed between canopy reflectance in the 810-nm band and the severity of either Rhizoctonia blight or gray leaf spot. As Rhizoctonia blight decreased with increases in the application rate of the fungicide flutolanil (N-[3-(1-methylethoxy)-phenyl]-2-(trifluoromethyl)benz< >amide) and the proportion of a resistant cultivar in tall fescue blends, canopy reflectance in the 810-nm band increased. However, models based on canopy reflectance had twice as much unexplained variability than models based on visual severity estimates of Rhizoctonia blight. Factors other than disease influenced variability in reflectance of light from tall fescue canopies." |
|---|
| Language: | English |
|---|
| References: | 42 |
|---|
| See Also: | Other items relating to: GLS |
|---|
| Note: | Tables
Graphs |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Green, D. E. II, L. L. Burpee, and K. L. Stevenson. 1998. Canopy reflectance as a measure of disease in tall fescue. Crop Sci. 38(6):p. 1603-1613. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=56298 |
| If there are problems with this record, send us feedback about record 56298. |
| Choices for finding the above item: |
|---|
| Web URL(s):
https://www.crops.org/publications/cs/pdfs/38/6/CS0380061603
Last checked: 08/05/2010
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: SB 183 .C7 |
| Find from within TIC:
Digitally in TIC by record number. |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
