Search Results - "Hurrell, G. A."

Frequency of occurrence and ground cover of Cirsium arvense on pastoral farms in New Zealand: a farmer opinion survey by Bourdôt, GW, Hurrell, GA, Saville, DJ

“…To determine the peak cover of Cirsium arvense (Californian thistle) on pastoral farms throughout New Zealand (NZ), a postal and telephone-based questionnaire…”
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Verticillium dahliae and other pathogenic fungi in Cirsium arvense from New Zealand pastures: occurrence, pathogenicity and biological control potential by Skipp, RA, Bourdôt, GW, Hurrell, GA, Chen, LY, Wilson, DJ, Saville, DJ

“…Cirsium arvense (Californian thistle) populations in pastures throughout New Zealand were surveyed in November–December 2005 (30 sites) and January–March 2006…”
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Impacts of applied Sclerotinia sclerotiorum on the dynamics of a Cirsium arvense population by Bourdot, G.W, Hurrell, G.A, Saville, D.J, Leathwick, D.M

“…Summary A field experiment was conducted from October 1992 to March 1997 in a sheep‐grazed pasture in Canterbury, New Zealand, to determine the effects of the…”
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Optimising inoculum yield and shelf life of Plectosphaerella cucumerina, a potential bioherbicide for Cirsium arvense by Bailey, K. L., Derby, J., Bourdôt, G. W., Skipp, R. A., Hurrell, G. A.

“…Plectosphaerella cucumerina was identified as a potential bioherbicide for controlling Cirsium arvense in Canada and New Zealand. The current study evaluated…”
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Seasonal dynamics of ground cover in Cirsium arvense – a basis for estimating grazing losses and economic impacts by Bourdôt, G W, Hurrell, G A, Trolove, M, Saville, D J

“…Analysis of the economics of managing Cirsium arvense in grazed pastures worldwide has been hampered by a lack of data on the within‐year seasonal dynamics of…”
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Changes in plant species composition after flupropanate application for nassella tussock control, in Canterbury hill-country pastures by Lusk, C. S., Hurrell, G. A., Saville, D. J., Bourdôt, G. W.

“…Field trials were conducted in hill-country pastures in Canterbury, New Zealand, to evaluate the herbicide flupropanate on nassella tussock (Nassella…”
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Resistance of Ranunculus acris to flumetsulam, thifensulfuron-methyl and MCPA in New Zealand dairy pastures by Lusk, CS, Hurrell, GA, Harrington, KC, Bourdôt, GW, Saville, DJ

“…Research in the 1980s showed that Ranunculus acris had evolved resistance to the phenoxy herbicides MCPA and MCPB in New Zealand. Since then two ALS-inhibitor…”
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Ecological Fitness and the Decline of Resistance to the Herbicide MCPA in a Population of Ranunculus acris by Bourdot, G. W., Saville, D. J., Hurrell, G. A.

“…1. Experiments were conducted (i) to determine whether resistance to MCPA would subside in a population of Ranunculus acris L. ssp. acris after ending a…”
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Effect of Application Time on the Efficacy of Sclerotinia sclerotiorum as a Mycoherbicide for Cirsium arvense Control in Pasture by Hurrell, G. A., Bourdôt, G. W., Saville, D. J.

“…An experiment was conducted in sheep-grazed pasture in three regions of New Zealand over three years to evaluate the effect of application time on the efficacy…”
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Risk Analysis of Sclerotinia sclerotiorum for Biological Control of Cirsium arvense in Pasture: Ascospore Dispersal by Bourdôt, G. W., Hurrell, G. A., Saville, D. J., DeJong, D. M. D.

“…Natural levels of Sclerotinia sclerotiorum ascsospores in the Canterbury region were determined over 3 years by trapping depositing ascospores in dishes…”
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Competitive exclusion of Cirsium arvense in pasture: a simulated neighbour grazing-height experiment by Bourdôt, GW, Leathwick, DM, Hurrell, GA, Saville, DJ

“…The role of interspecific competition in regulating Cirsium arvense in newly sown pasture was investigated in two pot experiments in Canterbury, New Zealand,…”
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Demographic and Biomass Production Consequences of Inundative Treatment of Cirsium arvense with Sclerotinia sclerotiorum by Bourdôot, G. W., Harvey, I. C., Hurrell, G. A., Saville, D. J.

“…The adventitious shoots in three populations of Cirsium arvense in sheep-grazed pastures were treated in October (spring) 1991 with a mycelium/wheat…”
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Weed flora of cereal crops in Canterbury, New Zealand by Bourdöt, G. W., Hurrell, G. A., Saville, D. J.

“…Weed communities in Canterbury, New Zealand, cereal crops were characterised in the 1990-91, 1991-92, and 1992-93 growing seasons by measuring species…”
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Safety zones for a Sclerotinia sclerotiorum-based mycoherbicide: Accounting for regional and yearly variation in climate by Bourdot, G.W, Baird, D, Hurrell, G.A, Jong, M.D. de

“…Variation in the width of 'safety zones' for sheep and dairy pasture treated with a Sclerotinia sclerotiorum (Lib.) de Bary-based mycoherbicide was quantified…”
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Chondrostereum purpureum and Fusarium tumidum independently reduce regrowth in gorse (Ulex europaeus) by Bourdot, G.W, Barton, J, Hurrell, G.A, Gianotti, A.F, Saville, D.J

“…An experiment was conducted in two gorse populations (Ulex europaeus) in which Chondrostereum purpureum was applied each month as mycelial-agar cultures to the…”
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Seasonal dynamics of ground cover in C irsium arvense – a basis for estimating grazing losses and economic impacts by Bourdôt, G W, Hurrell, G A, Trolove, M, Saville, D J

“…Summary Analysis of the economics of managing Cirsium arvense in grazed pastures worldwide has been hampered by a lack of data on the within‐year seasonal…”
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Risk Analysis of Sclerotinia sclerotiorum for Biological Control of Cirsium arvense in Pasture: Sclerotium Survival by Bourdôt, G. W., Saville, D. J., Hurrell, G. A., Harvey, I. C., De Jong, M. D.

“…The plurivorous ascomycete, Sclerotinia sclerotiorum , is being evaluated as a mycoherbicide for the biocontrol of Cirsium arvense in pastures. Increased…”
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Intraspecific plant density effects in Cirsium arvense by Leathwick, D. M., Bourdôt, G. W., Hurrell, G.A., Saville, D. J.

“…Cirsium arvense (Californian thistle) has been widely studied because of its importance as a weed of agricultural and natural ecosystems throughout much of the…”
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Risk analysis of Sclerotina slerotiorum for biological control of Cirsium arvense in pasture: Sclerotium survival by Bourdot, G W, Saville, D J, Hurrell, G A, Harvey, I C, De Jong, M D

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Variation in the efficacy of a mycoherbicide and two synthetic herbicide alternatives by Bourdôt, G. W, Hurrell, G. A, Saville, D. J

“…Field experiments testing the efficacy of plant pathogenic fungi as inundative biological control agents usually reveal a wide spatial and temporal variation…”
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