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Proceedings of the NZ Plant Protection Conference 51 (1998)

Introduction

Presidential address to the 50th NZ Plant Protection Conference on 19 August 1997

R.E. Falloon   pp. xv-xvi

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Secretary's annual report - 1997/98

M.R. Butcher   pp. xvii-xviii

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NZPPS Research Scholarship - Diane Webster

  p. xviii

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Pasture Weeds And Pests

Clover root weevil: Observations on differences between 1997 and 1998 summer populations in the Waikato

P.J. Addison, B. Willoughby, S. Hardwick and P.J. Gerard   pp. 1-4

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Laboratory investigations into feeding preferences of adult Sitona lepidus Gyllenhall

S. Hardwick   pp. 5-8

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Beauveria bassiana as a potential biocontrol agent against the clover root weevil, Sitona lepidus.

B.E. Willoughby, T.R. Glare, F.J. Kettlewell and T.L. Nelson   pp. 9-15

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Potential to enhance the efficacy of Microctonus hyperodae Loan

C.B. Phillips, J.R. Proffitt and S.L. Goldson   pp. 16-22

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Influence of liquid food on fecundity and longevity of Microctonus hyperodae Loan

C.B. Phillips   pp. 23-27

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Relationship between aerial shoot and root biomass in Californian thistle

G.W. Bourdot, D.M. Leathwick, G.A. Hurrell and D.J. Saville   pp. 28-32

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Survival of nodding thistle (Carduus nutans) seed buried at different soil depths in four soils

T.K. James, A. Rahman, D.A. Wardle and K.I. Bonner   pp. 33-37

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Arable Crops

Nationwide survey of pests and diseases of cereal and grass seed crops in New Zealand. 1. Arthropods and molluscs.

D. Bejakovich, W.D. Pearson and M.R. O'Donnell   pp. 38-50

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Nationwide survey of pests and diseases of cereal and grass seed crops in New Zealand. 2. Fungi and bacteria

M. Braithwaite, B.J.R. Alexander and R.L.M. Adams   pp. 51-59

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Control of hemipteran pests in lucerne and red clover seed crops using lambda-cyhalothrin

N.C. Schroeder   pp. 60-65

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Effects of fungicide rates and timing on control of stripe rust in wheat

M. Braithwaite, M.G. Cromey, D.J. Saville and T. Cookson   pp. 66-70

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The effectiveness of stripe rust resistance gene YR18 in wheat cultivars

S.L.H. Viljanen-Rollinson and M.G. Cromey   pp. 71-75

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Browntop seed production: weed competition effects and herbicide tolerance

M.P. Rolston, W. Archie and K. Reddy   pp. 76-79

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Phalaris seed production: control of Rumex and herbicide tolerance

K. Reddy, M.P. Rolston and W.J. Archie   pp. 80-83

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Halosulfuron for selective control of purple nutsedge in maize

A. Rahman, T.K. James, P. Sanders and M. Lane   pp. 84-89

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Microbial Control of Plant Pathogens

In vitro testing for biological control of Aphanomyces euteiches

S.A. Wakelin, T. McCarthy A. Stewart and M. Walter   pp. 90-95

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Persistence and survival of saprophytic fungi antagonistic to Botrytis cinerea on kiwifruit leaves

K.S.H. Boyd-Wilson, J.H. Perry and M. Walter   pp. 96-101

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Isolation and in vitro screening of soil fungi for biological control of Sclerotinia sclerotiorum

N. Rabeendran, E.E. Jones and A. Stewart   pp. 102-106

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Distribution of beneficial bacteria on nashi and apple flowers using honey bees

D.A. Cornish, M.D. Voyle, H.M. Haine, R.M. Goodwin and J.L. Vanneste   pp. 107-111

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Plant Pathogens

The effect of six postharvest temperature regimes on ripe rots of 'Hass' avocado

K.R. Everett and L. Korsten   pp. 112-116

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Evaluation of onion downy mildew disease risk in New Zealand using meteorological forecasting criteria

S.A. Whiteman and R.M. Beresford   pp. 117-122

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Soft fungicides for the control of Botrytis cinerea in vitro and in vivo on kiwifruit

H.A. Pak, S. Rasim, M.A. Manning and R.A. Fullerton   pp. 123-129

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Soil-incorporation of fungicides for control of clubroot of vegetable brassicas

L-H. Cheah, B.B.C. Page and J.P. Koolaard   pp. 130-133

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Camellia flower blight in New Zealand

C. Taylor and P. Long   pp. 134-137

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Pesticide Performance And Monitoring

Cholinesterase and glutathione S-transferase in the earthworm Apporectodea caliginosa as biomarkers of organophosphate exposure

L.H. Booth, V. Heppelthwaite and C.T. Eason   pp. 138-142

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Target and non-target impacts from diazinon applied against Dasineura mali in a Canterbury apple orchard

G.M. Burnip, A.R. Gibb and D.M. Suckling   pp. 143-147

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Soil degradation of diazinon and its effect on the emergence of apple leafcurling midge

J.T. Smith, R.B. Chapman and C.M. Frampton   pp. 148-151

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Envirosol technology - a new approach to fungicide application in greenhouses

H. Krishna, C. Stephens, A. Carpenter, N. Grant, G. Galbraith, M. Starr, R. Lill and R.F. Ryan   pp. 152-156

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Degradation and movement of terbuthylazine in soil

T.K. James, A. Rahman, P.T. Holland, D.E. McNaughton and M. Heiermann   pp. 157-161

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Evaluation of a novel adjuvant for use with glyphosate on perennial ryegrass

R.J. Murray, R.E. Gaskin and M.R. Grassam   pp. 162-165

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Horticultural Crops

Integrated fruit production (IFP) for New Zealand pipfruit: evaluation of pest management recommendations

J.T.S. Walker, C.H. Wearing, S.J. Bradley, P.W. Shaw, G.M. Burnip, A.R. Tomkins, C. Richardson and A.J. Hodson   pp. 166-172

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The use of pheromone traps for leafroller action thresholds in pipfruit

S.J. Bradley, J.T.S. Walker, C.H. Wearing, P.W. Shaw and A.J. Hodson   pp. 173-178

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Control of leafrollers in avocados

P.A. Brookbanks   pp. 179-183

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The effectiveness of different insecticide programmes for kiwifruit

C.E. McKenna   pp. 184-188

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Control of oriental fruit moth (Grapholita molesta) on golden queen peaches

V.C. Murrell and P.L. Lo   pp. 189-194

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Use of organic and green mulches in an apple orchard

M.J. Hartley and A. Rahman   pp. 195-198

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Effects of heating rate on the mortality of lightbrown apple moth

S.L. Alderson, B.C. Waddell and A.N. Ryan   pp. 199-203

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Upper thermotolerance of New Zealand flower thrips Thrips obscuratus (Crawford)

G.F. McLaren and J.A. Fraser   pp. 204-210

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Effects of high-pressure water jets on armoured scale insects and other contaminants of harvested kiwifuit

D.C. Whiting, L.E. Hoy, P.G. Connolly and R.M. McDonald   pp. 211-215

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Forest And Environment

Prospects and risks of biological control of wilding Pinus contorta in New Zealand

E.G. Brockerhoff and M. Kay   pp. 216-223

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Potential agents for eradication or control of gypsy moth in New Zealand

T.R. Glare, N.D. Barlow and P.J. Walsh   pp. 224-229

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Susceptibility of willows to oviposition by the willow sawfly, Nematus oligospilus

J.G. Charles, D.J. Allan and L. Fung   pp. 230-234

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Decay potential of basidiomycete fungi from Pinus radiata

A. Ah Chee, R.L. Farrell, A. Stewart and R.A. Hill   pp. 235-240

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Growth of Eucalyptus nitens after application of herbicide to control parsley dropwort

H. McKenzie, N. Davenhill, H. Gifford and A. Hawke   pp. 241-244

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Can insects transmit rabbit haemorrhagic disease virus?

B.I.P Barratt, C.M. Ferguson, A.C.G. Heath, A.A. Evans and R.A.S. Logan   pp. 245-250

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Selective control of weeds in New Zealand wetlands

P.D. Champion   pp. 251-254

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Biology and control of pypgrass

K.C. Harrington, L.M. Hodder and H.A. Outred   pp. 255-259

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Poster Abstracts

Diseases of maize in Waikato and South Auckland

P.G. Broadhurst   p. 260

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Phoma disease of wasabi in New Zealand

P.G. Broadhurst and P.J. Wright   p. 260

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Using elicitor to activate plant defense against fire blight

S.C. Gouk, S.V. Thomson and R.J. Boyd   p. 261

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FIREWORKS - a windows based computer programme for prediction of fire blight of apples

S.C. Gouk, M. Spink and M.R. Laurenson   p. 261

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mccEh252, a new microcin produced by Erwinia herbicola

D.A. Cornish, J. Yu and J.L. Vanneste   p. 262

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Estimating biomass of Botrytis cinerea

V. Vingnana Singam and P. Long   p. 262

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Asparagus ilarvirus 2 (AV2) transmission in asparagus seed

M.V. Jaspers and M.N. Pearson   p. 263

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Forecasting barley yellow dwarf virus in Canterbury winter-sown cereals

D.A.J. Teulon and M.A.W. Stufkens   p. 263

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Immunising plants - developing antibody fragments against a potyvirus replication protein

D. Webster, P. Guy and R. Forster   p. 264

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Isolation and culture of Ciborinia camelliae

C. Taylor and P. Long   p. 264

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Penconazole for the control of Septoria cucurbitacearum in cucurbits

R.D. Welsh,   p. 265

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Pathogenicity of Erwinia carotovora subsp. carotovora, Fusarium solani and Rhizoctonia spp. to calla

P.J. Wright   p. 265

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A technique for monitoring adult emergence of Pezothrips kellyanus from the soil

K. Froud   p. 266

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Sampling earwigs in apple orchards

S. Pawson, D.M. Suckling, G.M. Burnip and A.R. Gibb   p. 266

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Tree Pests: Some recent arrivals in New Zealand

K.J. Froud, J.G. Charles and D.J. Allan   p. 267

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Australian black beetle Adoryophorus couloni (Burmeister) extends its range on Banks Peninsula

M.J. Gorton, R.B. Chapman and R.J. Townsend   p. 267

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Farmer observations on the impact of clover root weevil (Sitona lepidus) on Waikato farms

B. Willoughby and F. Kettlewell   p. 268

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Material from these papers was presented at the New Zealand Plant Protection Society's Annual Conference held at Quality Hotel, Hamilton on 11-13 August 1998.

This volume was edited by M. O'Callaghan and published by The New Zealand Plant Protection Society Inc.

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