| Txt Link | Title | Author(s) | Abstract | Publisher Link |
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Environmental risk assessment of genetically engineered herbicide-tolerant Zoysia japonica. |
Bae TW, Vanjildorj E, Song SY, Nishiguchi S, Yang SS, Song IJ, Chandrasekhar T, Kang TW, Kim JI, Koh YJ, Park SY, Lee J, Lee YE, Ryu KH, Riu KZ, Song PS, Lee HY. |
Herbicide-tolerant Zoysia grass (Zoysia japonica Steud.) has been generated previously through Agrobacterium tumefaciens-mediated transformation. The genetically modified (GM) Zoysia grass survived Basta spraying and grew to maturity normally while the wild-type (WT) grass stopped growing and died. GM Zoysia grass will permit more efficient weed control for various turf grass plantings such as home lawns, golf courses, and parks. We examined the environmental/biodiversity risks of herbicide-tolerant GM Zoysia before applying to regulatory agencies for approval for commercial release. The GM and WT Zoysia grass' substantial trait equivalence, ability to cross-pollinate, and gene flow in confined and unconfined test fields were selectively analyzed for environmental/biodiversity effects. No difference between GM and WT Zoysia grass in substantial traits was found. To assess the potential for cross-pollination and gene flow, a non-selective herbicide, Basta, was used. Results showed that unintended cross-pollination with and gene flow from GM Zoysia grass were not detected in neighboring weed species examined, but were observed in WT Zoysia grass (on average, 6% at proximity, 1.2% at |
18178894 |
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Evaluating a naturally occurring baculovirus for extended biological control of the black cutworm (Lepidoptera: Noctuidae) in golf course habitats. |
Bixby-Brosi AJ, Potter DA. |
Golf courses are a potential market for microbial insecticides, but how intensive management of such sites interacts with efficacy of entomopathogens is poorly known. We evaluated Agrotis ipsilon nucleopolyhedrovirus (AgipMNPV) for suppressing black cutworms, Agrotis ipsilon Hufnagel (Lepidoptera: Noctuidae), in turf representative of golf course habitats and on whole tees under actual play. In independent trials on sand- or soil-based putting greens and surrounds, or fairway-height creeping bentgrass (Agrostis stolonifera L.), < or = 1-wk-old AgipMNPV residues (10 x 10(8) occlusion bodies [OBs] per m2) typically gave 50-60% lethal infection of introduced third instars. In most cases, however, there was no residual control beyond 2-4 wk. Spraying fairway-height bentgrass with AgipMNPV alone (10 x 10(9) OBs per m2) gave 90, 85, and 7% infection of second instars introduced 4 d, 3 wk, or 5 wk later, but adjuvants (optical brightener, lignin, or both) intended to synergize and protect the virus from UV degradation did not extend infectivity. Fresh (< 1-wk-old) AgipMNPV residues killed 76-86% of neonates hatching from eggs on tees under play, but levels of control plummeted within a fe |
21061953 |
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Evaluation of Three Nematicides for the Control of Phytoparasitic Nematodes in 'Tifgreen II' Bermudagrass. |
Giblin-Davis RM, Cisar JL, Bilz FG. |
Three nematicides were evaluated for control of Belonolaimus longicaudatus, Hoplolaimus galeatus, Criconemella spp., and Meloidogyne spp. in 'Tifgreen II' bermudagrass mowed at golf course fairway height (1.3 cm) in Fort Lauderdale, Florida. Bermudagrass plots were treated with fenamiphos (13.5 kg a.i./ha), oxamyl (13.5 kg a.i./ha), or 30% formaldehyde (6.4 liter a.i./ha). The plots treated with fenamiphos or formaldehyde were split 14 days later and one-half of each plot received two biweekly applications of formaldehyde. Forty-two days after the treatments were applied, the turfgrass vigor ratings and dry root weights in plots treated with fenamiphos were higher (P < 0.05) than the control, oxamyl, or formaldehyde treatments. The population levels of B. longicaudatus were suppressed (P < 0.05) in the fenamiphos, fenamiphos plus formaldehyde, and oxamyl treatments. |
19290302 |
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Factors affecting distribution of the mound-building ant Lasius neoniger (Hymenoptera: Formicidae) and implications for management on golf course putting greens. |
Maier RM, Potter DA. |
Lasius neoniger (Emery), a cosmopolitan ant species, can be a serious pest when its mound-building activities occur on golf course putting greens and other closely mowed turfgrass sites. We mapped the distribution of 735 ant mounds on 30 sand-based putting greens of three golf courses. We then examined factors that might explain why >90% of the mounds on such greens were concentrated in a 2-m wide band just inside the perimeter. Root aphids (Homoptera: Aphididae) from which L. neoniger obtains honeydew were largely absent from high-sand root zone mix of greens but present in surrounding turfgrass on natural soil. Main ant nests, with brood, also were absent from sand-based greens but abundant in adjacent roughs. Although more root aphids were found within ant nests than away from nests, their numbers seem too low to be the main factor restricting the ants' distribution to edges of putting greens. In manipulative experiments, ants responded to low cut (scalped) turf and to sand-filled holes by increased mound building. We suggest that most ant mounds on sand-based greens are associated with subnests, used by foraging workers, which are connected to main nests located just outside th |
16022318 |
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Fenamiphos poisoning of native geese. |
Allender WJ. |
A case of fenamiphos (phenamiphos) (NEMACUR) poisoning of geese was investigated. The birds had grazed on turf grass in a golf course adjoining a reserve and shallow lake. The turf grass had been treated earlier with NEMACUR at the correct application rate. |
7975133 |
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Fungicide leaching from golf greens: effects of root zone composition and surfactant use. |
Larsbo M, Aamlid TS, Persson L, Jarvis N. |
Soil water repellency in golf putting greens may induce preferential "finger flow," leading to enhanced leaching of surface applied fungicides. We examined the effects of root zone composition, treatment with a non-ionic surfactant, and the use of the fungicide iprodion or a combination of azoxystrobin and propiconazole on soil water repellency, soil water content distributions, fungicide leaching, and turf quality during 1 yr. Soil water repellency was measured using the water drop penetration time (WDPT) test and tension infiltrometers. Our study was made on a 3-yr-old experimental green seeded with creeping bentgrass (Agrostis stolonifera L.) 'Penn A-4' at Landvik in southeast Norway. The facility consists of 16 lysimeters with two different root zone materials: (i) straight sand (1% gravel, 96% sand, 3% silt and clay, 4 g kg(-1) organic matter) (SS) and (ii) straight sand mixed with garden compost to an organic matter content of 21 g kg(-1) (Green Mix [GM]). Surfactant treatment resulted in 96% lower average WDPTs at 1 cm depth, three times higher water infiltration rates at the soil surface, and reduced spatial variation in soil water contents. Fungicide leaching was close to |
18574185 |
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Golfer exposure to chlorpyrifos and carbaryl following application to turfgrass. |
Putnam RA, Doherty JJ, Clark JM. |
No abstract available |
Not Available |
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In vitro and in vivo antagonism of pathogenic turfgrass fungi by Streptomyces hygroscopicus strains YCED9 and WYE53. |
Chamberlain K, Crawford DL. |
No abstract available |
Not Available |
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In vitro pesticide degradation in turfgrass soil incubated under open and sealed conditions. |
Suzuki T, Yaguchi K, Suzuki S, Suga T. |
No abstract available |
Not Available |
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Inhalation health risk to golfers from turfgrass pesticides at three northeastern U.S. sites. |
Murphy RR, Haith DA. |
No abstract available |
Not Available |
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Interactions of arsenic and the dissolved substances derived from turf soils. |
Chen Z, Cai Y, Solo-Gabriele H, Snyder GH, Cisar JL. |
No abstract available |
Not Available |
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Invasive Tipula (Diptera: Tipulidae) in turfgrass of the northeast United States: geographic distribution and local incidence three years after detection. |
Peck DC, Olmstead D. |
No abstract available |
Not Available |
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Leachability of some emerging contaminants in reclaimed municipal wastewater-irrigated turf grass fields. |
Xu J, Chen W, Wu L, Green R, Chang AC. |
No abstract available |
Not Available |
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Loss of pendimethalin in runoff and leaching from turfgrass land under simulated rainfall. |
Lee YD, Kim HJ, Chung JB, Jeong BR. |
No abstract available |
Not Available |
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Management of root knot nematodes in turfgrass using mustard formulations and biostimulants. |
Fleming CC, Turner SJ, Hunt M. |
No abstract available |
Not Available |
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Managing earthworm casts (Oligochaeta: Lumbricidae) in turfgrass using a natural byproduct of tea oil (Camellia sp.) manufacture. |
Potter DA, Redmond CT, Meepagala KM, Williams DW. |
No abstract available |
Not Available |
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Microbial control of black cutworm (Lepidoptera: Noctuidae) in turfgrass using Agrotis ipsilon multiple nucleopolyhedrovirus. |
Prater CA, Redmond CT, Barney W, Bonning BC, Potter DA. |
No abstract available |
Not Available |
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Molecular identification of the turf grass rapid blight pathogen. |
Craven KD, Peterson PD, Windham DE, Mitchell TK, Martin SB. |
No abstract available |
Not Available |
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Natural turf surfaces: the case for continued research. |
Stiles VH, James IT, Dixon SJ, Guisasola IN. |
No abstract available |
Not Available |
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Nutrient flux in storm water runoff and baseflow from managed turf. |
King KW, Balogh JC, Harmel RD. |
No abstract available |
Not Available |
