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Y.L. Qian, J.M. Fu, S.J. Wilhelm, D. Christensen, and A.J. Koski

Analysis System ( SAS Institute, 2006 ). Turf quality, leaf firing, clipping yield, root dry weight, and root activity of salinity treatment were then adjusted as if the control over the different time periods for each lines had the same value. Differences

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Bohan Liu and Peter J. Landschoot

based on relative clipping yields were 170 mg·kg −1 for Mehlich-1, 233 mg·kg −1 for Bray-1, and 280 mg·kg −1 for Mehlich-3. Two field seedling establishment experiments were conducted by Hamel and Heckman (2006) using the same soils as those in one

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

Gardner and Wherley (2005) . Three varieties of turfgrass were used: sheep’s fescue ( Festuca ovina L.), tall fescue [ Schedenorus phoenix (Scop.) Holub], and rough bluegrass ( Poa trivalis L.). Applications of TE reduced clipping yields in all

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Yang Gao and Deying Li

initiated on 20 Mar. 2011. After the 8-week fertilization period, a 4-week no-fertilization period was introduced to evaluate the fertility levels remaining in the root zones based on clipping yield change and visual quality. After the evaluation, watering

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Nicholas Menchyk, Douglas G. Bielenberg, Samuel Martin, Clint Waltz, Hong Luo, Frank Bethea Jr., and Haibo Liu

clipping yields and higher levels of nonstructural carbohydrates leading to a potential increase in shade tolerance in ‘Diamond’ zoysiagrass ( Qian and Engelke, 1999 ). Atkinson et al. (2012) demonstrated that ‘Diamond’ can be maintained with 0.013 kg a

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Christian M. Baldwin, Haibo Liu, Lambert B. McCarty, Hong Luo, and Joe E. Toler

.) control, respectively. The bentgrass green did not receive additional topdressing except one after each of the three core aerifications annually. Data collection. Data collected included microenvironment conditions, visual TQ, clipping yield, chlorophyll

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Christian M. Baldwin, Haibo Liu, Lambert B. McCarty, Hong Luo, Joe Toler, and Steven H. Long

#9840; Taylor), visual turfgrass quality (TQ), clipping yield, chlorophyll concentration, root total nonstructural carbohydrates (TNC), soil bulk density, and water infiltration rates. Canopy and soil (7.6 cm depth) temperatures were recorded after each

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Jinghua Fan, George Hochmuth, Jason Kruse, and Jerry Sartain

involving RW. Fig. 1. Changes in concentrations of nitrogen (N) species in reclaimed water at the Envirotron greenhouse (Gainesville, FL) during 1 year [started from 18 July 2011 (week 0)]; 1 mg·L −1 = 1 ppm. Response of turf quality and clippings yields

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Daniel Hargey, Benjamin Wherley, Andrew Malis, James Thomas, and Ambika Chandra

differences due to TE were observed in study 2, there were again decreased clipping yields observed with the use of TE in both cultivars. Fig. 2. Effect of plant growth regulator (PGR) and trinexapac-ethyl on mean weekly clipping dry weights of ‘Floratam’ and

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M. J. Sills and R. N. Carrow

Abstract

Tall fescue (Festuca arundinacea Schreb. ‘Kentucky 31’) was subjected to 3 compaction treatments with 2 nitrogen levels. Increasing compaction increased bulk density, water retention, and soil strength while aeration porosity decreased. Visual quality, clipping yield, N use per unit soil area, and root growth declined as compaction increased. Compaction reduced percent N recovery by 10 to 31% compared to uncompacted plots. Visual quality, clipping yield, percent N in leaf tissue, and N uptake increased with increasing N-rates but percent N recovery declined. Total nonstructural carbohydrates were unaffected. The high N-rate with compaction had a detrimental effect on root growth.