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Proceedings of the NZ Weed and Pest Control Conference 42 (1989)

Introduction

Presidential address to the 41st Annual Conference

M.J. Hartley   pp. 13-14

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NZ Weed and Pest Control Research Scholarship - Katrina McCallum

  p. 14

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Annual report 1988-89

A.J. Popay   p. 14

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Keynote Address

Resource allocations for future weed control activities

J.H. Combellack   pp. 15-31

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Pesticide Symposium

The role of government research in achieving safe pest management

S.L. Goldson and R.P. Pottinger   pp. 32-34

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Pasture Weeds

Pasture tolerance to spring applications of the herbicide thiameturon-methyl

A. Rahman and P. Martin   pp. 35-38

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Distribution and cross-tolerance of MCPA-tolerant nodding thistle

K.C. Harrington   pp. 39-42

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Biological and economic effects of surfactant addition to MCPA for giant buttercup (Ranunculus acris) control

G.W. Bourdot, G.A. Hurrell and D.J. Saville   pp. 43-47

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Establishment and seasonality of two ragwort feeding insects at Hanmer

H.M. Harman and P. Syrett   pp. 48-51

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Introduction of the crown weevil (Trichosirocalus horridus) as an additional biocontrol agent against nodding thistle

C.T. Jessep   pp. 52-54

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Pasture and Crop Pests

Insecticidal control of arnyworm outbreaks on flood damaged pasture

R.H. Blank, N.R. Wrenn and P.L. Lo   pp. 55-59

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Evaluation of mob stocking for control of grass grub

R.F. van Toor, C.M. Ferguson and b.I.P. Barratt   pp. 60-62

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Screening of grass grub populations and soil types for their influence on pathogenicity of the bacterium Serratia entomophila

T.A. Jackson, H. Macnab and M.L. Garnham   pp. 63-66

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The effect of trypsin inhibitors on grass grub (Costelytra zealandica (White)) larval growth and trypsin activity

J.J. Dymock, W.A. Laing, J.T. Christeller and B.D. Shaw   pp. 67-70

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Diflubenzuron for porina control in otago

C.M. Ferguson, P.A. Jones and B.I.P. Barratt   pp. 71-72

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The effects of lolitrem B on Argentine stem weevil larvae

J.J. Dymock, R.A. Prestidge and D.D. Rowan   pp. 73-75

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The toxicities of chlorpyrifos and fenitrothion to Microctonus aethiopoides and Sitona discoideus

M.R. McNeill and R.B. Chapman   pp. 76-80

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The efficiency of sampling for aphid predators from lucerne

D.M. Leathwick and D.R. Penman   pp. 81-85

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Laboratory studies of Trifolium uniflorum root consumption by grass grub (Costelytra zealandica)

J.J. Dymock and V.A. Hunt   pp. 86-87

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Silene vulgaris: a new grass grub resistant plant

O.R.W. Sutherland, J.J. Dymock, G.A. Lane and G.B. Russell   pp. 88-90

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Pesticide Performance and Activity

Biological activity of DPX-L5300 in some New Zealand soils

T.K. James, A. Rahman and J. Mortimer   pp. 91-94

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Clethodim - a post emergence herbicide for selective annual and perennial grass weed control in broadleaf crops

G.W. Kerse, D.L. Ballard and A.M. Cliffe   pp. 95-99

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Broadleaf weed herbicide effects on wild oat: implications for tank mixing herbicides

Mitchell andrews, Alex V. Jones and Morag E. Andrews   pp. 100-104

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The susceptibility of environmentally stressed Avena spp. to sequential applications of gibberellic acid and post emergence herbicides

Ross L. Dickson, Roger J. Field and mitchell Andrews   pp. 105-109

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Effect of simulated rainfall and adjuvants on the activity of some grass herbicides

A. Rahman and T.K. James   pp. 110-113

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Cyproconazole - a new DMI fungicide

G.W. Kerse and D.L. Ballard   pp. 114-118

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Annual grass weed control with haloxyfop, a selective post emergence herbicide

P.J. Dryden   pp. 119-120

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Forest, Scrub and Shelter

Field evalution of Pinus radiata tolerance to triclopyr

G.W. Saville   pp. 121-123

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Cost effective herbicides for Yorkshire fog (Holcus lanatus) control

J.W. Ray, N.A. Davenhill and A.L. Vanner   pp. 124-127

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The effect of surfactants on the uptake and translocation of glyphosate in Yorkshire fog

R.E. Gaskin and J.A. Zabkiewicz   pp. 128-131

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Evaluation of techniques to measure aerial spray deposition

B. Richardson, J. Ray and A. Vanner   pp. 132-136

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The introduction of gorse spider mite, Tetranychus lintearius, for biological control of gorse

R.L. Hill, A.H. Gourlay and P.J. Wigley   pp. 137-139

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Susceptibility of eucalyptus tortoise beetle (Paropsis charybdis) to Bacillus thuringiensis var. San Diego

T.A. Jackson and G.A. Poinar   pp. 140-142

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Optimum rates of oxyfluorfen for different poplar and willow clones

A.N. Gilchrist   pp. 143-145

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Fruit Crops I

Investigating the impact of protectant fungicides on integrated mite control. i.A. modelling perspective

A.J. Hayes, J.T.S. Walker, P.W. Shaw and C.H. Wearing   pp. 146-151

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Investigating the impact of protectant fungicides on integrated mite control. II. results of three field experiments

J.T.S. Walker, C.H. Wearing, P.W. Shaw, J.G. Charles and A.J. Hayes   pp. 152-158

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Frequency of infection periods for Venturia inaequalis in New Zealand and implications for fungicide use

R.M. Beresford, M.J. Salinger, P.E. Bruce and P.J. Brook   pp. 159-164

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Use of forecast and monitored weather information for timing apple black spot fungicide applications in Canterbury

D.W. Manktelow, R.M. Beresford, M.J. Salinger, P.E. Bruce and R.E. Gaunt   pp. 165-169

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Fungicide evaluation for control of blossom blight of nectarines

R.S. Gawith and K.G. Tate   pp. 170-173

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Control of post-harvest ripening decays of nectarines with fungicide treatments

K.G. Tate, R.S. Gawith, L.H. Cheah and A.W. Hunt   pp. 174-177

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Control of powdery mildew of grapes with plant extracts

G. Herger, I. Harvey, T. Jenkins and R. Alexander   pp. 178-181

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Fruit Crops II

The incidence of three Diaspid scales on kiwifruit in New Zealand

J.A. Berry, C.F. Morales, M.G. Hill, B.J. Lofroth and D.J. Allan   pp. 182-186

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Toxicity of lime sulphur to armoured scale

R.H. Blank and M.H. Olson   pp. 187-190

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Lime sulphur for armoured scale and lichen control on kiwifruit

R.H. Blank and M.H. Olson   pp. 191-194

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Pesticides for use close to and during harvest of persimmons

R.A. Prestidge, P.T. Holland, A.D. Clarke and C.P. Malcolm   pp. 195-199

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Significance of and monitoring for alien fruit flies (Tephritidae)

J.M. Cowley and E.R. Frampton   pp. 200-203

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Procedures for fruit fly (Tephritidae) eradication in New Zealand

B.P. Stephenson   pp. 204-208

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The effect of weed removal on growth of young apricot trees

R.B. Mitchell and R.J. Abernethy   pp. 209-212

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Cereals

The effects of fallow and herbicide on wheat production in Canterbury

R.T. Alexander and J.H.B. Butler   pp. 213-216

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Disease effects on radiation interception in barley crops

H.G. Whelan and R.E. Gaunt   pp. 217-220

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Control of scald and net blotch of barley with DMI fungicides

J. Edmund Sheridan and david K. Nendick   pp. 221-224

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Effect of nitrate concentrations and additional amino acids on the susceptibility of wheat to chlorsulfuron

Farhad Dastgheib, Mitchell Andrews and Roger J. Field   pp. 225-228

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Vegetable Crops

Status of introduced larval parasitoids of tomato fruitworm

G.P. Walker and P.J. Cameron   pp. 229-232

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Aphid control with RH7988

T.J.B. Herman and R.B. Chapman   pp. 233-237

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Garden weevil life cycle and insecticides for its control in asparagus

R.A. Prestidge and B. Willoughby   pp. 238-242

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Fungicidal control of Stemphylium leaf spot of asparagus

K.G. Tate, L.H. Cheah, A.W. Hunt and H. Dick   pp. 243-246

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Powdery mildew of peas; possible causes of recent epidemics and prospects for control

R.E. Falloon, A.F. McErlich and R.E. Scott   pp. 247-250

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Response of potatoes, onions and tomatoes to herbicides used for brushweed control

P.G. Lobb   pp. 251-253

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Control of powdery mildew (Erysiphe pisi) with penconazole

G.B. Follas and R.D. Welsh   pp. 254-255

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Alternative insecticides for control of lepidoptera on cabbages

P.J. Cameron   pp. 256-258

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Ornamentals

Control of black vine weevil (Otiorhynchus sulcatus (F.)) larvae with parasitic nematodes and fungal pathogens

B.I.P. Barratt, C.M. Ferguson, T.A. Jackson   pp. 259-261

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Carbaryl for control of black vine weevil (Otiorhynchus sulcatus (F.)) on rhododendrons

B.I.P. Barratt, D.R. Lauren, C.M. Snelling and C.M. Ferguson   pp. 262-265

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Evaluation of fungicides for control of fairy ringspot disease in carnations

M. Braithwaite, R.C. Close and D.J. Saville   pp. 266-268

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Beneficial Insects

Evaluation of acaricides for control of Melittiphus alvearius mite in export bee packages

R.F. van Toor   pp. 269-273

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Melittobia spp. as parasitoids of bumble and lucerne leafcutting bees and their control in New Zealand

R.P. Macfarlane and B.J. Donovan   pp. 274-277

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Pesticide Resistance Report

The New Zealand Committee on Pesticide resistance 1989 Summary

R.W. Prince, M.S. Moore and C.H. Wearing   pp. 278-292

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Material from these papers was presented at the New Zealand Plant Protection Society's Annual Conference held at Taranaki Country Lodge, New Plymouth on 8-10 August 1989.

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

Please refer to the terms of use.