Full TGIF Record # 285458
Item 1 of 1
DOI:10.2135/cropsci2016.06.0494
Web URL(s):https://dl.sciencesocieties.org/publications/cs/articles/57/supplement1/S-285
    Last checked: 08/18/2017
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https://dl.sciencesocieties.org/publications/cs/pdfs/57/supplement1/S-285
    Last checked: 08/18/2017
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Publication Type:
i
Refereed
Author(s):Schmid, Charles J.; Clarke, Bruce B.; Murphy, James A.
Author Affiliation:Dep. of Plant Biology, Rutgers Univ., New Brunswick, NJ
Title:Anthracnose severity and annual bluegrass quality as influenced by nitrogen source
Section:International Turfgrass Society Conference
Other records with the "International Turfgrass Society Conference" Section
Source:Crop Science. Vol. 57, No. Supplement 1, July/August 2017, p. S-285-S-292.
Publishing Information:Madison, Wisconsin: Crop Science Society of America
# of Pages:8
Related Web URL:https://dl.sciencesocieties.org/publications/cs/abstracts/57/supplement1/S-285
    Last checked: 08/18/2017
    Notes: Abstract only
Keywords:TIC Keywords: Anthracnose severity index; Disease severity; Fertilizer evaluation; Nitrogen fertilization; Poa annua; Turfgrass quality
Abstract/Contents:"Anthracnose (caused by Colletotrichum cereale Manns sensu lato Crouch, Clarke & Hillman) of annual bluegrass [ABG, Poa annua L. f. reptans (Hausskn.) T. Koyama] turf is a destructive fungal disease that has been shown to be more severe under nitrogen (N) deficiencies. Little is known about the effect of soluble N source on this disease. A 3-yr field study was initiated in 2010 to evaluate the effect of soluble N source on anthracnose severity and to determine if N source alters the effect of N frequency on this disease during midseason on an ABG turf maintained at 3.2 mm. Nitrogen treatments were applied at 4.9 kg N ha-1 every 7 or 14 d (frequency factor) as solutions of ammonium sulfate, ammonium nitrate, urea, calcium nitrate, or potassium nitrate. Both N frequency and N source affected disease severity throughout 2010, 2011, and 2012. In general, soluble N applied at 4.9 kg N ha-1 every 7 d reduced disease compared with N applied at the same rate every 14 d. Of the N sources, potassium nitrate provided the greatest reduction in disease severity over the 3-yr study, whereas ammonium sulfate treatments resulted in the greatest disease severity. Soil pH was also influenced by N source, with ammonium sulfate treatments resulting in the lowest soil pH (most acidic), and potassium nitrate consistently producing the highest soil pH (most basic) throughout the study. Potassium nitrate also greatly increased soil K. This study has shown that anthracnose severity on ABG putting green turf is influenced by N source, and that low-rate applications of potassium nitrate every 7 d were most effective at reducing disease severity under moderately acidic soil conditions and moderate to low soil K levels."
Language:English
References:38
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Schmid, C. J., B. B. Clarke, and J. A. Murphy. 2017. Anthracnose severity and annual bluegrass quality as influenced by nitrogen source. Crop Sci. 57(Supplement 1):p. S-285-S-292.
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DOI: 10.2135/cropsci2016.06.0494
Web URL(s):
https://dl.sciencesocieties.org/publications/cs/articles/57/supplement1/S-285
    Last checked: 08/18/2017
    Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/cs/pdfs/57/supplement1/S-285
    Last checked: 08/18/2017
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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