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Web URL(s): | https://scisoc.confex.com/scisoc/2016am/webprogram/Paper102848.html Last checked: 11/22/2016 |
Publication Type:
| 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) Other records with the "Golf turf poster (includes student competition)" Section
C05 turfgrass science Other records with the "C05 turfgrass science" Section
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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
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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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