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Proceedings of the NZ Weed and Pest Control Conference 40 (1987)

Introduction

Presidential address to the 39th Conference 1986

T.M. Patterson   pp. 13-14

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Annual report 1986-87

A.J. Popay   p. 14

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Biological Control

Establishment of Aphidius rhopalosiphi - a parasitoid of rose-grain aphid in New Zealand

M.W. Stufkens and J.A. Farrell   pp. 15-18

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A seed-feeding beetle for biological control of broom

P. Syrett and D.J. O'Donnell   pp. 19-22

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Overwintering biology and survival of the sitona weevil parasitoid, Microctonus aethiopoides

J.R. Proffitt and S.L. Goldson   pp. 23-26

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Evaluation of methods for applying Serratia entomophila to pasture

M. O'Callaghan, M.J. Noonan, T.M. Broad and T.A. Jackson   pp. 27-30

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Establishment of Microctonus aethiopoides, a parasitoid of the sitona weevil, in New Zealand

M.W. Stufkens, J.A. Farrell and S.L. Goldson   pp. 31-32

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Delayed action of an entomophagous nematode (Heterorhabditis sp.) for grass grub control

T.A. Jackson and W.M. Wouts   pp. 33-35

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Ornamentals

Chemical control of adult black wine weevil (Otiorynchus sulcatus)

B.I.P. Barratt and C.M. Ferguson   pp. 36-38

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A survey of slugs and snails in ornamental plant production nurseries

G.M. Barker and R.P. Pottinger   pp. 39-43

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Insecticidal control of thrips on nerines

A. Carpenter   pp. 44-46

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Turf weed control with clopyralid herbicide

G.W. Saville   pp. 47-48

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Forest, Scrub and Shelter

Growth response of radiata pine to area of herbaceous weed control

J.M. Balneaves   pp. 49-51

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Influence of adjuvants on the activity of asulam and glyphosate in bracken (Pteridium spp.)

R.E. Gaskin and R.C. Kirkwood   pp. 52-55

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Haloxyfop EE: A selective post-emergence herbicide for perennial grassweed control

B.M. Harris   pp. 56-58

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Vegetable Crops

Response of potatoes, tomatoes and kumaras to foliar applications of MCPA, mCPB, 2, 4-D, clopyralid and amitrole

W.J. Lucas and P.G. Lobb   pp. 59-63

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Metalaxyl controls Phytophthora rot of asparagus

L.H. Cheah   pp. 64-66

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Soil management practices for asparagus production

T.I. Cox, A. Ingle and R.M. Kerr   pp. 67-70

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Postharvest fumigation of fresh asparagus with dichlorvos

A. Carpenter   pp. 71-74

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Tolerance of lentils to pre-emergence herbicides

J.H.B. Butler and R.T. Alexander   pp. 75-77

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Stemphylium purple spot of asparagus

L.H. Cheah and A.W. Hunt   pp. 78-79

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General

Aspects of testing involving patented herbicides¼Monsanto v. Stauffer

P.C. Dengate Thrush   pp. 80-83

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Formation of the New Zealand Committee on Pesticide Resistance

G.S. Elliott, C.H. Wearing and D.M. Suckling   pp. 84-89

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Mites

A phenology model of European red mite for timing miticides

A.J. Hayes   pp. 90-93

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European red mite resistance to organotin miticides in Hawkes Bay apple orchards

R.B. Chapman, D.R. Penman and J.T.S. Walker   pp. 94-98

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Early season control of two-spotted mite in strawberry production beds

J.G. Charles V. White and B. Lofroth   pp. 99-103

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The effects of mancozeb and metiram on the predatory mites, typhlodromus pyri

G.T. Baynon and D.R. Penman   pp. 104-107

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Toxicity of two pesticides to Phytoseiulus persimilis

P.J. Workman and N.A. Martin   pp. 108-111

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Effect of leaf type on the ovicidal activity of hexythiazox

J.W.M. Marris and R.B. Chapman   pp. 112-115

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Screening chemicals against an oribatid mite

D. Steven and B. Lofroth   pp. 116-119

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Plant Growth Regulators

Chemical manipulation of plant growth and the rational development of synthetic plant growth regulators

R.J. Field   pp. 120-123

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Mefluidide induced changes in tiller development in perennial ryegrass

R.J. Field and J.M. Boleyn   pp. 124-126

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The potential for growth retardants at low rates to maintain pasture quality

M.H. Foreman and R.J. Field   pp. 127-130

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Paclobutrazol seed treatments: potential for retarding growth of field bean, radish and perennial ryegrass

N.N. Dobson and R.J. Field   pp. 131-135

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Fruit Crops

Herbicide tolerance of young nashi and apples

M.J. Hartley   pp. 136-139

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Herbicide tolerance and weed control in young nectarines

M.J. Hartley   pp. 140-143

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Evaluation of herbicides in establishing stonefruit

R.B. Mitchell   pp. 144-148

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Fungicide evaluation for control of leaf curl of nectarine and peach

K.G. Tate, L.H. Cheah and R.S. Gawith   pp. 149-152

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Thrips control on stonefruit at flowering in Canterbury

D.A.J. Teulon and D.R. Penman   pp. 153-156

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The effect of greenhouse whitefly spray thresholds on tamirillo yield

R.H. Blank   pp. 157-160

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Differential toxicological responses of greedy scale stages to diazinon

R.H. Blank and M.H. Olson   pp. 161-164

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Cultivar by herbicide interactions in newly planted raspberries

M.J. Hartley   pp. 165-166

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Cereals

Control of barley yellow dwarf virus (BYDV) disease of barley in mid-Canterbury

M.W. Stufkens and J.A. Farrell   pp. 167-171

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Strains of Pyrenophora teres in New Zealand barley crops with reduced sensitivity to ergosterol biosynthesis inhibitor fungicides

J.E. Sheridan and D.K. Nendick   pp. 172-175

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Control of spot and net type blotch of barley

J.E. Sheridan and D.K. Nendick   pp. 176-178

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Effect of soil moisture and organic matter on the activity of atrazine

A. Rahman   pp. 179-181

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Uptake and translocation of glyphosate in oats after droughting

R.L. Dickson and R.J. Field   pp. 182-185

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Polygonum persicaria - a triazine-resistant biotype

A Rahman and T.M. Patterson   pp. 186-188

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Wireworm (Ctenicera spp.) and two-spotted mite recorded on Waikato maize

L.N. Robertson, G.M. Barker and L.J. Wymer   pp. 189-190

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Pasture and Lucerne

Comparison of a grooved and smooth roller for control of grass grub

R.F. van Toor and K.M. Stewart   pp. 191-193

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Controlling perennial ryegrass with glyphosate in spring

N.G. Bishop and R.J. Field   pp. 194-198

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Mycorrhizal infection influences Acremonium-induced resistance to Argentine stem weevil in ryegrass

G.M. Baker   pp. 199-203

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Chilean needle grass (Stipa neesiana). 1. Control with herbicides in pasture

G. Bourdot and G.A. Hurrell   pp. 204-207

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Chilean needle grass (Stipa neesiana). 2. Herbidical control in lucerne

G. Bourdot and G.A. Hurrell   pp. 208-211

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A long term effect of sitona weevil damage in Canterbury lucerne

S.L. Goldson, J.R. Proffitt and R.C. Stephen   pp. 212-215

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The effect of diflubenzuron on sitona weevil and its parasitoid Microctonus aethiopiodes

E.R. Frampton, G.W. Kerse and S.L. Goldson   pp. 216-218

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Effect of herbicides and flower head maturity on the germination of nodding thistle seed

P. Martin and A. Rahman   pp. 219-221

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The effect of nodding thistle (Carduus nutans) on pasture production

A. Thompson, A.E. Saunders and P. Martin   pp. 222-225

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Hessian Fly - a new pest of prairie grass?

R.A. Prestidge, S. van der Zijpp and M. Fraser   pp. 226-227

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Response of four white clover cultivars to winter applied 2,4-D

P. Martin, J.E. Waller and A. Rahman   pp. 228-229

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A technique for comparing the susceptibility of two weed populations to a herbicide

K.C. Harrington   pp. 230-232

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Feeding and oviposition of Argentine stem weevil adults on endophyte infected ryegrass

J.J. Dymock and V.A. Hunt   pp. 233-235

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Material from these papers was presented at the New Zealand Plant Protection Society's Annual Conference held at Quality Inn, Nelson on 11-13 August 1987.

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

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