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Publication Type:
i
Refereed
Author(s):Hartin, J. S.; Green, R. L.; Amaranthus, M. P.; Richie, W. E.; Klein, G. J.; Castleman, D.; Bruno, A.
Author Affiliation:Hartin: University of California Cooperative Extension, San Bernardino, California; Green, Kline, Castleman, and Bruno: Department of Botany and Plant Sciences, University of California, Riverside, California; Amaranthus: Department of Forest Science, Oregon State University, Mycorrhizal Applications Incorporated, Grants Pass, Oregon; Richie: Formerly of Department of Botany and Plant Sciences, University of California, Riverside, California;
Title:Effectiveness of mycorrhizal inoculants on seeded creeping bentgrass establishment
Source:Journal of Turfgrass and Sports Surface Science. Vol. 81, 2005, p. 26-39.
Publishing Information:Bingley, West Yorkshire, UK: The Sports Turf Research Institute
# of Pages:14
Keywords:TIC Keywords: Mycorrhizal fungi; Seeding; Agrostis stolonifera; Arbuscular mycorrhizae; Dry weight; Root weight; Soil inoculants; Fungicide application; Establishment
Cultivar Names:Dominant
Trade Names:endoROOTS
Abstract/Contents:Arbuscular-mycorrhizal fungi (AMF) offer numerous benefits to host plants including improved resistance to abiotic and biotic stresses. Although the majority of grasses in undisturbed natural environments form AMF relationships, less is known about mycorrhization of turfgrass species in maintained situations. The objective of this research was to determine the effectiveness of mycorrhizal inoculation on establishment of 'Dominant' creeping bentgrass (agrostis palustis Huds.). A 38-d greenhouse study was conducted in which pure spores of the mycorrhizal fungus glomus intraradices Schenck & Smith were added as a soil drench at the time of seeding and fertilizing (Myc-T0) and 13 d subsequent (Myc-T^DO2). A seeding only treatment (S) and a seeding and fertilizing treatment (SF) served as controls. In addition, a 19-mo field study was conducted by incorporating the commercial mycorrhizal inoculum, endoROOTSTM, into 1.52-× 5.79-m plots located on a newly constructed sand putting green prior to creeping bentgrass seeding. Pots not treated with endoROOTS^DTTM served as a control treatment. Results from both studies showed that creeping bentgrass inoculated with AMF established more rapidly than the control treatments in terms of producing significantly greater percent endomycrrhizal colonization, percent plant cover, and root weight density (RWD). In the green house study, the Myc-T^DO0 treatment resulted in 50% plant cover 13 d following seeding and fertilizing and 93% after 22 d, compared to 21% and 67%, respectively, for the control treatment.In the field study, the endoROOTSTM treatment resulted in 59% plant cover 16 d following seeding and 95% after 35 d, compared to 26% and 68%, respectively, for the control treatment. Results of the field study also showed that endoROOTSTM treatment produced significantly greater dry clipping weight than the control treatment during the initial mowing (9.6 and 4.9 g m-2 per33 d, respectively). Although there was no significant difference in RWD between greenhouse treatments Myc-T0 and Myc-T2 sampled at the 5.0- to 12.0-cm root-zone depth, 38 d following seeding and fertilizing, both treatments resulted in significantly greater RWD than the S control treatment, and the Myc-T2 treatment resulted in significantly greater RWD than the SF control treatment. In the field study, the endoROOTSTM treatment resulted in significantly greater RWD than the control treatment in the 0- to 7.6-cm root-zone depth on three of nine measurement dates. Results of an overall analysis of variance for this root-zone depth showed significant treatment (P=0.013) and date (P=0.001) effects while the treatment x date interaction was not significant. Also, the overall RWD mean resulting from the endoROOTSTM treatment was significantly greater than for the control treatment (1.36 and 1.14 kg m-3, respectively). Hastened establishment of turfgrass grown in mycorrhizal-inoculated soils may play an important role in facilitating early play and stress resistance on golf courses. Results also indicate that G. intraradices, now available from a variety of commercial sources, is an important component of an effective mycorrhizal inoculum of golf course turfgrass.
Language:English
References:42
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hartin, J. S., R. L. Green, M. P. Amaranthus, W. E. Richie, G. J. Klein, D. Castleman, et al. 2005. Effectiveness of mycorrhizal inoculants on seeded creeping bentgrass establishment. J. Turfgrass Sports Surf. Sci. 81:p. 26-39.
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    Last checked: 01/07/2009
    Requires: PDF Reader
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