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Mark J. Howieson and Nick Edward Christians

raw materials to redevelop leaf and shoot tissue ( Davidson and Mithorpe, 1966 ; Donaghy and Fulkerson, 1998 ; Morvan-Betrand et al., 1999 ). The primary reserve carbohydrate of creeping bentgrass ( Agrostis stolonifera L.) is fructan. Fructan is

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Aneta K. Studzinska, David S. Gardner, James D. Metzger, David Shetlar, Robert Harriman, and T. Karl Danneberger

Creeping bentgrass ( Agrostis stolonifera L.) is a turfgrass species highly suitable for use on golf course tees, greens, and fairways. As a result of its ability to provide exceptional quality playing surfaces when mowed short, it is used

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Edward J. Nangle, David S. Gardner, James D. Metzger, John R. Street, and T. Karl Danneberger

areas of ≈1500 m −2 each were then established in June 2006 with washed creeping bentgrass ‘Penncross’ ( Agrostis stolonifera L. cv. Penncross) sod (H&E Sod Nursery, Momence, IL) and allowed to acclimate for 3 weeks before initiation of routine

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Eric M. Lyons, Robert H. Snyder, and Jonathan P. Lynch

Root distribution in turfgrass systems influences drought tolerance and resource competition with undesirable species. We hypothesized that spatial localization of phosphorus (P) supply would permit manipulation of turfgrass root distribution. To test this hypothesis, creeping bentgrass (Agrostis stolonifera L.) plants were exposed to localized P supply in two experiments. The first experiment split the root zone horizontally into two different growth tubes and the second used alumina-buffered P (Al-P) to localize P availability deeper within a continuous root zone. In the horizontally split root zones, heterogeneous P availability led to no difference in shoot growth compared with uniform P availability. Root proliferation was greatest in the growth tube with available P compared with the growth tube without P. The use of Al-P, regardless of its spatial distribution, doubled root-to-shoot ratios compared with soluble P. Much of the increase in the ratio was accounted for by reduced shoot growth. Use of Al-P increased rooting deeper in the root zone, especially when the Al-P was mixed only in the lower portion of the root zone. Our results are consistent with the hypothesis that root distribution of creeping bentgrass can be manipulated by spatial localization of P supply in the root zone and indicate that relative biomass allocation to roots and shoots may be manipulated with buffered P sources.

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Keenan Amundsen and Scott Warnke

. Interspecific hybridization is common and these reticulation events are difficult to represent in bifurcating phylograms. Jones (1956a , 1956b , 1956c ) described the chromosome pairing behavior during metaphase I of meiosis among Agrostis stolonifera , A

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Yan Xu and Bingru Huang

transport. Cool-season turfgrass species such as Agrostis stolonifera are sensitive to heat stress and experience a series of physiological injuries when exposed to temperatures above 30 °C. Leaf senescence was observed after 20 d at 30 °C and only 8 d at

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Nanqing Liu, Yixin Shen, and Bingru Huang

. 52 1891 1901 Merewitz, E.B. Gianfagna, T. Huang, B. 2011 Photosynthesis, water use, and root viability under water stress as affected by expression of SAG12-ipt controlling cytokinin synthesis in Agrostis stolonifera J. Expt. Bot. 62 383 395 Munns, R

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John Watson, François Hébert, Eric M. Lyons, Theo Blom, and Katerina S. Jordan

Establishment and management practices for creeping bentgrass ( Agrostis stolonifera L.) are well understood as a result of its widespread popularity and use ( Beard, 1973 , 2002 ; Christians, 1998 ). Newer generations of creeping bentgrass

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Lijuan Xie, Deying Li, Wenjuan Fang, and Kirk Howatt

.L. Askew, S.D. 2006 Selective creeping bentgrass ( Agrostis stolonifera ) control in cool-season turfgrass Weed Technol. 20 340 344 Bhowmik, P.C. Drohen, J.A. 2001 Differential response of cool-season turfgrass species to isoxaflutole Intl. Turfgrass Soc

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Thomas O. Green, John N. Rogers III, James R. Crum, Joseph M. Vargas Jr., and Thomas A. Nikolai

disease of Agrostis stolonifera L Intl. Turfgrass Soc. Res. J. 8 905 911 Ledeboer, F.B. Skogley, C.R. 1967 Investigations into the nature of thatch and methods for its decomposition Agron. J. 59 320 323 Liu, L.X. Hsiang, T. Carey, K. Eggens, J.L. 1995