Full TGIF Record # 278165
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Web URL(s):https://scisoc.confex.com/scisoc/2016am/webprogram/Paper102848.html
    Last checked: 11/22/2016
Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Dodson, Kathleen Laura; Chaves, Laura Cortese; Ross, James B.
Author Affiliation:Centre for Innovation, Olds College, Olds, AB, Canada
Title:Fall applications of nitrogen and potassium and their effect on winter hardiness of annual bluegrass (Poa annua L.)
Section:Golf turf poster (includes student competition)
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C05 turfgrass science
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Meeting Info.:Phoenix, Arizona: November 6-9, 2016
Source:ASA, CSSA and SSSA International Annual Meetings. 2016, p. 102848.
Publishing Information:[Milwaukee, Wisconsin]: [American Society of Agronomy and the Entomological Society of America]
# of Pages:1
Keywords:TIC Keywords: Ammonium sulfate; Cold resistance; Fall fertilization; Nitrogen fertilizers; Nutrient concentration; Poa annua; Potassium fertilizers; Potassium sulfate
Abstract/Contents:"Fall fertilization can have a significant impact on the ability of plants to acclimate in the fall. Recommendations on fall fertilization practices vary widely, and appear to be species specific. A granular fertility research project focused on the response of annual bluegrass to fall applied nitrogen (N) and potassium (K) was implemented to determine the effects of N and K fertilization on cold hardiness, and to determine if there is a relationship between plant cold hardiness, soil nutrient status, and tissue nutrient content. Nitrogen and K were applied at 0, 0.113, 0.227, and 0.454 kg / 100m2 in a complete factorial design for a total of 16 fertilizer rates applied biweekly from 15 Aug through 1 Oct in 2014 and 2015. Ammonium sulfate and potassium sulfate were the sources for N and K respectively. Cold tolerance was evaluated 4 times during the acclimation process; however the final testing date in November displayed the highest cold tolerance levels and statistical differences. Results showed that a balanced rate of 0.125kg/100m2 for both nutrients provided the highest level of cold tolerance. Optimal cold tolerance levels correlated with tissue tests levels between 2.5 - 3% N and 2.25 - 2.75% K. Excessive amounts of both N and K reduced the cold tolerance of annual bluegrass."
Language:English
References:0
Note:This item is an abstract only!
"167-1622"
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Dodson, K. L., L. C. Chaves, and J. B. Ross. 2016. Fall applications of nitrogen and potassium and their effect on winter hardiness of annual bluegrass (Poa annua L.). Agron. Abr. p. 102848.
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    Last checked: 11/22/2016
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