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Proceedings of the NZ Weed and Pest Control Conference 44 (1991)

Introduction

Annual report 1990-91

A.J. Popay   p. 10

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NZ Weed and Pest Control Research Scholarship - Brett Alexander

  p. 10

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Presidential address to the 43rd Conference, 1990

R.P. Pottinger   pp. 14-16

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Forest and Scrub

Tolerance of several species of tree seedlings to oxyfluorfen

A.L. Vanner   pp. 17-20

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Evaluation of herbicides for the control of Pinus contorta

J.W. Ray and N.A. Davenhill   pp. 21-24

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Control of sweet brier by the aerial application of glyphosate and Silwet L77

K.O. Fallow   pp. 25-27

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Control of bracken and selectivity of radiata pine to primisulfuron

R.D. Welsh, H.M. Beetz and G.B. Follas   pp. 28-30

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Establishment of gorse spider mite as a control agent for gorse

R.L. Hill, H.M. Grindell, C.J. Winks, J.J. Sheat and L.M. Hayes   pp. 31-34

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Cholecalciferol as an alternative to sodium monofluoroacetate (1080) for poisoning possums

C.T. Eason   pp. 35-37

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The responses of German wasps, Vespula germanica, to ingestion of the microbial toxin, avermectin B1

J.J. Dymock, S.A. Forgie and P.J. Wigley   pp. 38-41

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Wasp control by poison baiting: experiemental use of hydramethylnon in canned sardine bait

E.B. Spurr   pp. 42-46

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Fruit Crops I

Evaluation of mating disruption of lightbrown apple moth in Nelson

D.M. Suckling and P.W. Shaw   pp. 47-51

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Monitoring leafroller moths in Bay of plenty kiwifruit orchards

A.R. Tomkins, D. Steven, C. McKenna, N. Lees and P. Sale   pp. 52-57

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Activity of neem, nutmeg and pine oils against the lightbrown apple moth

B.H. Rohitha, R.P. Pottinger and D.R. Lauren   pp. 58-60

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High temperature disinfestation of nectarines: lightbrown apple moth larvae

D.B. Birtles, B.C. Waddell and J.H. Maindonald   pp. 61-65

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Insect control on apples with RH-5992, a novel insect growth regulator

J.T.S. Walker, G.T. Baynon and V. White   pp. 66-69

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Toxicity and repellency of insecticides to oribatid mites infesting kiwifruit

A.R. Tomkins, P.J. Gerard and C. Thomson   pp. 70-74

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Relative efficacy of chemicals for dormant season control of armoured scale on kiwifruit

R.H. Blank, M.H. Olson and J.E. Waller   pp. 75-79

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Monitoring and control of pear slug (sawfly) in an organic nashi orchard

C.W. van Epenhuijsen and H.N. de Silva   pp. 80-85

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Fungicides for control of black spot and powdery mildew in organic apple production systems

R.M. Beresford, P.A.G. Elmer, M. Spink, R.T. Alexander and M.J. Daly   pp. 86-90

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Incidence of Erwinia herbicola in New Zealand apple orchards: implications for biological control

L.P. Kearns and CN. Hale   pp. 91-94

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Pesticides

A simple technique for determining herbicide mobility in soils

A. Rahman and T.K. James   pp. 95-98

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Persistence of metsulfuron in different soils

A. Rahman, T.K. James, P. Martin and D.K. Fullerton   pp. 99-104

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Seasonal uptake and translocation of metsulfuron in gorse (Ulex europaeus)

J.A. Zabkiewicz and R.E. Gaskin   pp. 105-108

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A comparison between two commercial organosilicone surfactants; their effect on the uptake and translocation of glyphosate in gorse (Ulex europaeus)

R.E. Gaskin and J.A. Zabkiewicz   pp. 109-111

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The effect of spray thickening anti-drift adjuvants on flow rates through nozzles

B. Richardson and J. Ray   pp. 112-115

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Vegetables and Ornamentals

Control of weeds in five herb crops

T.K. James, A. Rahman and J.A. Douglas   pp. 116-120

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Effect of cultivation on weed seed emergence

M.J. Hartley   pp. 121-124

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Density dependence of weed seed production in two field crops

M.J. Hartley   pp. 125-128

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Identification of viruses in process tomatoes using commercial ELISA kits

K.G. Tate, J.D. Fletcher, D.W. Manktelow, A.J. Kale and I.S. Brice   pp. 129-133

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Control of Stemphylium leaf spot in asparagus with difenoconazole

G.B. Follas and H.M. Beetz   pp. 134-137

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Tolerance of Calla lilies to herbicides

A. Ingle and W.T. Bussell   pp. 138-142

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An evaluation of the efficacy of fungicides to control fairy ring spot of carnation

M. Braithwaite, R.C. Close and D.J. Saville   pp. 143-146

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Evaluation of three molluscicide baits against slugs in vegetables

A.C. Firth, G.M. Barker and P.J. Addison   pp. 147-149

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Current Topics

Integrated pest management in New Zealand: limitations and models for change

M.E. Whalon and D.R. Penman   pp. 150-155

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Weed research in western Canada

W.H. van den Bborn   pp. 156-159

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Pesticide use: an approach to conflict resolution

D.R. Penman and J.F. Brunner   pp. 160-164

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Pastoral Pests

The economic cost of Argentine stem weevil in pastures in New Zealand

R.A. Prestidge, G.M. Barker and R.P Pottinger   pp. 165-170

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Seasonal damage by Argentine stem weevil to perennial ryegrass pastures with different levels of Acremonium lolii

A.J. Popay and R.A. Mainland   pp. 171-175

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Seasonal levels of peramine and lolitrem b. in Acremonium lolii-infected perennial ryegrass 

O.J-P. Ball, R.A. Prestidge, J.M. Sprosen and D.R. Lauren   pp. 176-180

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The effects of the endophytic fungus, Acremonium starii on feeding and oviposition of the Argentine stem weevil

N.L. Bell and R.A. Prestidge   pp. 181-184

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Comparative pathogenicty of Beauvaria bassiana isolates to adult Argentine stem weevil in the laboratory

H.H. Goh, G.M. Barker, P.J. Addison, S.N. Lyons and A.C. Firth   pp. 185-188

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Glasshouse evaluations of seed treatments for protection of ryegrass seedlings from insect pests

G.M. Barker, P.J. Addison and l.N. Robertson   pp. 189-194

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A novel bait formulation for slug and snail control

G.M. Barker, R.P. Pottinger, J.M. Lloyd, P.J. Addison, A.C. Firth and A.P. Stewart   pp. 195-200

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Bacterial control of the sheep blow fly

M.L. Garnham, J.F. Pearson and T.A. Jackson   pp. 201-204

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Screening of plants and plant extracts for repellency to Tinea dubiella, a major New Zealand wool pest

P.J. Gerard and L.D. Ruf   pp. 205-208

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Pathogenicity of Beauvaria, metarhizium, Paecilomyces and Fusarium isolates against early instar grass grub (Costelytra zealandica) larvae

H.H. Goh, B. Willoughby, R.A. Prestidge and S.N. Lyons   pp. 209-211

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Grass grub damage in irrigated and dryland pastures near Carew, mid Canterbury

T.A. Jackson and R.J. Townsend   pp. 212-213

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Comparative pathogenicity to Argentine stem weevil of Beauveria bassiana from various hosts

G.M. Barker, H.H. Goh, S.N. Lyons and P.J. Addison   pp. 214-215

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Fruit Crops II

Development of disease management systems (DMS) for Hawkes Bay pip and stone fruit production

D.W.L. Manktelow and K.G. Tate   pp. 216-219

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Survey of fungicide resistance in Monilinia fructicola in New Zealand

M. Braithwatie, P.A.G. Elmer and S. Ganev   pp. 220-224

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Survival of Monilinia fructicola resistant to MBC and dicarboximide fungicides on twig cankers and mummified fruits

N. Sanoamuang and R.E. Gaunt   pp. 225-228

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Inheritance of resistance to MBC and dicarboximide fungicides in isolates of Monilinia fructicola

N. Sanoamuang, R.E. Gaunt and A.G. Fautrier   pp. 229-231

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Post-harvest rots of avocados and their control

W.F.T. Hartill, P.R. Sale and D. Sawden   pp. 232-236

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A comparison of buprofezin and deltamethrin/oil for control of greenhouse whitefly on tamarillo

R.H. Blank, T.E. Dawson and A.C. Richardson   pp. 237-241

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Mating disruption of curant clearwing, Synanthedon tipuliformis

W.P. Thomas and G.M. Burnip   pp. 242-247

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Effect of fluvalinate on the development and survival of two-spotted spider mite

J.M. Holland and R.B. Chapman   pp. 248-251

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Use of discriminating concentration for monitoring propargite resistance in two-spotted spider mite

K.H. Kabir, R.B. Chapman and D.R. Penman   pp. 252-256

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Estimating selection for endosulfan resistance in coffee berry borer in New Caledonia

L.O. Brun and D.M. Suckling   pp. 257-259

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Greedy scale and the fungus Fusarium stilboides

A.M. Ferguson and J.D. Fletcher   pp. 260-261

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Control of blossom blight in stonefruit with difenoconazole

G. Follas and H.M. Beetz   pp. 262-264

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Preliminary observations of diseases on persimmon (Diospyros kaki) and their potential effect on fruit quality

H.H. Goh, S.N. Lyons and A.W. Mowat   pp. 265-267

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New Techniques

A system to accurately apply fine powders

A.M. Ferguson and M.J. King   pp. 268-269

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Pasture Weeds

Evidence for the heritability of mCPA-resistance in giant buttercup (Ranunculus acris)

G.W. Bourdot and G.A. Hurrell   pp. 270-274

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Application time influences the development of herbicide resistance in giant buttercup (Ranunculus acris)

D.M. Leathwick and G.W. Bourdot   pp. 275-279

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Why nodding thistle receptacle weevil destroys so little nodding thistle seed in canterbury

D. Kelly and R. Wood   pp. 280-283

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Residual allelopathic effects of pasture grasses and legumes on nodding thistle seedling emergence and growth

D.A. Wardle, K.S. Nicholson and M. Ahmed   pp. 284-287

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Increasing temperatures may enhance emergence and seedling growth of nodding thistle, summer grass and spiny emex

M. Ahmed and d.A. Wardle   pp. 288-291

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Distribution and establishment of two biological control agents for ragwort in New Zealand

P. Syrett, J.M. Grindell, L.M. hayes and c.J. Winks   pp. 292-295

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Arable Crops and Seed Production

Weed seed occurrence in cocksfoot seedlots

J.S. Rowarth, M.P. Rolston and A.A. Johnson   pp. 296-299

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Herbicide evaluation in China aster grown for seed

L. Phetpradap and J.G. Hampton   pp. 300-303

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The effect of propiconazole on leaf spot infection and seed yield of velvet grass

M.S. Tolentino and J.G. Hampton   pp. 304-306

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Net blotch of barley

J.E. Sheridan   pp. 307-309

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Evaluation of lamdacyhalothrin for control of greasy cutworm in seedling maize

P.J. Addison, G.M. Barker, A.C. Firth and G.B. Brown   pp. 310-311

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Material from these papers was presented at the New Zealand Plant Protection Society's Annual Conference held at Willow Park Motor Hotel, Tauranga on 13-15 August 1991.

This volume was edited by A.J. Popay and published by The New Zealand Weed and Pest Control Society Inc.

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