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| DOI: | 10.2135/cropsci2015.12.0765 |
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| Web URL(s): | https://dl.sciencesocieties.org/publications/cs/articles/56/6/3328
Last checked: 12/9/2016
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Inguagiato, John C.;
Guillard, Karl |
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| Author Affiliation: | Dep. of Plant Science and Landscape Architecture, Univ. of Connecticut, Storrs, CT |
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| Title: | Foliar N concentration and reflectance meters to guide N fertilization for anthracnose management of annual bluegrass putting green turf |
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| Source: | Crop Science. Vol. 56, No. 6, November/December 2016, p. 3328-3337. |
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| Publishing Information: | Madison, Wisconsin: Crop Science Society of America |
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| # of Pages: | 10 |
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| Related Web URL: | https://dl.sciencesocieties.org/publications/cs/abstracts/56/6/3328
Last checked: 12/9/2016
Notes: Abstract only
http://www.turf.uconn.edu/pdf/research/reports/2016%20UConn%20Annual%20Turf%20Research%20Report.pdf#page=121
Last checked: 12/12/2018
Requires: PDF Reader
Notes: Item is within a single large file; 2016 Annual Turfgrass Research Report [Connecticut] partial reprint |
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| Keywords: | TIC Keywords: Anthracnose; Disease control; Disease severity; Nitrogen; Nitrogen fertilization; Nitrogen level; Normalized Difference Vegetation Index; Nutrient concentration
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| Abstract/Contents: | "Site-specific management using objective assays to determine N requirement based on canopy reflectance could improve current recommendations for cultural control of anthracnose (Colletotrichum cereale Manns sensu lato Crouch, Clarke, and Hillman). The objectives of this study were to determine the relationships among foliar sap nitrate-nitrogen (NO3-N) concentrations, canopy reflectance indices (normalized difference vegetation index [NDVI] and chlorophyll index [CI]), foliar total N concentrations, and N rate on anthracnose severity in annual bluegrass (ABG), Poa annua L. f. reptans (Hausskn) T. Koyama. A 2-yr field study was conducted on ABG putting green turf in Storrs, CT. Nitrogen treatments were applied as urea at 0.0 to 36.8 kg ha-1 every 14 d in spring and summer of 2011 to 2012. Anthracnose severity declined linearly with increasing biweekly N rate from 0 kg ha-1 up to the estimated critical level of 12.8 kg ha-1. A minimum critical foliar N concentration of 33.5 g kg-1 maintained anthracnose at ≥32% plot area. Canopy reflectance indices were correlated with foliar N concentration. Anthracnose severity decreased linearly as relative NDVI and relative CI increased. Maintaining relative NDVI between 0.94 to 0.98 through N fertility alone would provide a ≅76 to 93% probability of maintaining ≥32% turf area infested, or relative CI range of 0.73 to 0.93 had the same result ≅40 to 98% of the time." |
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| Language: | English |
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| References: | 40 |
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| See Also: | See also interpretive summary "That's a sappy relationship" Golf Course Management, 87(6) June 2019, p. 76, R=306145. R=306145 |
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| Note: | Partial reprint appears in 2016 Annual Turfgrass Research Report [Connecticut], 2017, p. 111
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Inguagiato, J. C., and K. Guillard. 2016. Foliar N concentration and reflectance meters to guide N fertilization for anthracnose management of annual bluegrass putting green turf. Crop Sci. 56(6):p. 3328-3337. |
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| DOI: 10.2135/cropsci2015.12.0765 |
| Web URL(s):
https://dl.sciencesocieties.org/publications/cs/articles/56/6/3328
Last checked: 12/9/2016
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2211522a |
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