The OCS Aorists: A Problem in Generative Description

Lunt, Horace G.

doi:10.1515/9783111396835-015

Cited by 1 publication

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“…However, our results demonstrate the strong influence soil moisture has on soil properties as indicated by the negative relationships between soil water content and ρ b or SPR (Table 4). This is consistent with past research that has showed decreased potential for soil compaction as soil moisture decreases below field capacity (Boufford & Carrow, 1980; Lunt, 1952; Swartz & Kardos, 1963).…”

Section: Resultssupporting

confidence: 92%

“…Soil water content at the time of traffic can play a large role in the amount of compaction. Specifically, maximum soil compaction usually occurs when soil water content is near field capacity, but the potential for compaction decreases as soil moisture decreases below or increases above field capacity (Lunt, 1952; Swartz & Kardos, 1963). Boufford and Carrow (1980) confirmed this in a stand of ‘Kentucky 31’ tall fescue [ Festuca arundinacea Schreb.…”

Section: Introductionmentioning

confidence: 99%

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Simulated traffic on turfgrasses during drought stress: II. Soil moisture, soil compaction, and rooting

Braun

Bremer

Hoyle

2021

Intl Turfgrass Soc Res J

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Turf is often subject to traffic stresses during drought. Our objectives were to evaluate the impacts of golf cart traffic applied during simulated drought on soil properties and turfgrass rooting. Soil and roots in the upper profile (0-30.5 cm) were evaluated in two cool-season (C 3 ) [Kentucky bluegrass (Poa pratensis L.) and perennial ryegrass (Lolium perenne L.)] and two warm-season (C 4 ) turfgrasses {buffalograss [Buchloë dactyloides (Nutt.) Engelm.] and zoysiagrass (Zoysia japonica Steud.)} maintained at golf course mowing heights (1.6 [fairway] and 6.3 cm [rough]) during a 41-d drought (with traffic) and subsequent 40-d recovery (without traffic). After drought, soil bulk density was ≤1.40 g cm −3 and generally below the 1.55 g cm −3 threshold, where root-growth restriction is more problematic. After drought, soil penetration resistance exceeded 2.0 MPa at lower depths, especially at fairway height, which may impede root-growth. The C 3 turfgrasses had 46-70% more root biomass and 150-290% more root length density than C 4 turfgrasses. However, only root diameter was correlated with turf canopy performance (r = 0.501; P < .001), which was 20-23% less in Kentucky bluegrass; a smaller root diameter may have diminished its ability to explore for moisture as soils dried. Most differences in soil and root characteristics resulted from drought and not traffic stress, since the traffic main effect was not significant. Results indicate cart traffic during acute drought may have negligible effects on soil compaction and rooting.

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Section: Resultssupporting

confidence: 92%