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Proceedings of the NZ Weed and Pest Control Conference 39 (1986)

Introduction

Presidential address to the 38th Conference 1985

M.S. Moore   p. 13

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Annual report 1985-86

A.J. Popay   p. 14

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Pasture Pests

Control of grass grub by four types of roller

K.M. Stewart and R.F. van Toor   pp. 15-18

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The time of rolling for control of grass grub

R.F. van Toor and K.M. Stewart   pp. 19-21

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Field testing of seed protectants against black field cricket attack

R.H. Blank, D.S. Bell and R.A. McGhie   pp. 22-26

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An evaluation of the insect growth regulators diflubenzuron and teflubenzuron for control of lucerne flea (Sminthurus viridis)

N.R. Wrenn and R.A. McGhie   pp. 27-32

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The effect of Argentine stem weevil on cocksfoot and tall fescue when sown with ryegrass

R.A. Prestidge, D. Badan and S. van der Zijpp   pp. 33-37

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The cumulative effect of sitona weevil larval damage on a Canterbury lucerne stand after three seasons

J.R. Proffitt and S.L. Goldson   pp. 38-40

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Pasture and Forage Crops

Nematicidal protection of ryegrass seedlings in pasture renovation trials

R.N. Watson, G.M. Barker, L.N. Robertson, R.S. Marsden and E.A. Wilson   pp. 41-44

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Herbicides for grass seed crops. 1. Seedling browntop, phalaris and tall fescue

M.P. Rolston and M.D. Hare   pp. 45-48

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Seedling disease of marrow stem kale controlled with combination fungicide seed treatments

R.E. Falloon, R.A. Banfield and M.J. Christensen   pp. 49-53

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Head smut of prairie grass controlled by treating seed with ergosterol biosynthesis inhibitor fungicides

R.E. Falloon and M.P. Rolston   pp. 54-59

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Fungal root pathogens in pasture soils and effects of fungicides

R.A. Skipp   pp. 60-64

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Evaluation of chemicals for manipulating summer pasture growth

M.A. Richardson and C.C. Bell   pp. 65-66

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Establishment of tree lucerne in hill country

L.A. Lyttle and A.I. Popay   pp. 67-69

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Scrub, Forest and Shelter

The costs and benefits of gorse

R.L. Hill and R.A. Sandrey   pp. 70-73

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Seasonal effects of glyphosate and silwet M applied to mature gorse

J.M. Balneaves   pp. 74-76

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Evaluation of metsulfuron for pre-plant control of gorse in forestry

N. Davenhill and D. Preest   pp. 77-80

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Comparison of effectiveness and persistence of three hexazinone formulations

R.E. Gaskin and J.A. Zabkiewicz   pp. 81-84

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Radiata pine tolerance to three formulations of hexazinone

D. Preest   pp. 85-88

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Effect of application volume and spray additive concentration on the control of bracken

J.W. Ray, A.L. Vanner and B. Richardson   pp. 89-91

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Haloxyfop EE - selective control of pampas grass in New Zealand commercial forests

G.W. Saville, M.J. Watson and C.J. Sharpe   pp. 92-94

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The effect of metsulfuron on sweet brier

M. McD. Turner, G. Iggo and F.A. Meeklah   pp. 95-98

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Rates of diuron for weed control in poplar and willow beds

A.N. Gilchrist   pp. 99-101

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Tolerance of tree species to haloxyfop and clopyralid when applied in early summer

B.J. Cosslett   pp. 102-103

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Summer release spraying of black walnut

B.J. Cosslett   pp. 104-105

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An aerial spray trial to control Cyclaneusma needlecast on radiata pine

A.L. Vanner   pp. 106-107

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Herbicides for control of old man's beard

P. Downard   pp. 108-109

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Biological Control

Preliminary observations on the ragwort flea beetle in New Zealand

P. Syrett   pp. 110-113

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Evaluation of an entomophagous nematode (Steinernema bibionis) for the control of porina larvae (Wiseana spp.) in the Otaki district

G.J. van der Mespel, W.M. Kain and W.M. Wouts   pp. 114-116

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Effects of diazinon, fensulfothion and isazophos on predatory invertebrates in pasture

L.N. Robertson, N.R. Wrenn and G.M Barker   pp. 117-121

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The seasonal behaviour of the parasite Miroctonus aethiopoides and its effect on sitona weevil

S.L. Goldson and J.R. Proffitt   pp. 122-125

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Screening insect pathogens for pest control

P.J. Wigley, L.A. Malone and S. Dhana   pp. 126-129

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Greenlooper caterpillar control on greenhouse tomatoes with Bacillus thuringiensis

N.A. Martin and P. Workman   pp. 130-132

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Fruit Crops

Dormant season control of greedy scale on kiwifruit

A.R. Tomkins, P.T. Holland, K.C. Phillip and C.P. Malcolm   pp. 133-137

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Monitoring greedy scale crawler activity on kiwifruit vines

M.G. Hill, D.J. Allan, C. McKenna and D. Steven   pp. 138-142

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Evaluation of low volume spraying in kiwifruit

J. Maber, P.T. Holland and A. Tomkins   pp. 143-147

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Screening chemicals to control greenhouse whitefly on tamarillo

R.H. Blank, M.J. Blagrove and J.E. Waller   pp. 148-152

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Strategies for control of greenhouse whitefly in tamarillo orchards

R.H. Blank, M.J. Blagrove and A.R.W. White   pp. 153-157

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Control of postharvest diseases of avocado

W.F.T. Hartill, M.A. Manning and D.J. Allen   pp. 158-161

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Integrated control of two-spotted mite on strawberry runner beds

P.J. Workman   pp. 162-165

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A survey of fungicide insensitivity on Monilinia fructicola

P.A.G. Elmer and R.E. Gaunt   pp. 166-169

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Tolerance of feijoa to some soil-applied herbicides

B.B. Fischer, T.I. Cox and R.M. Kerr   pp. 170-171

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Tolerance of kiwifruit seedlings and rooted cuttings to residual herbicides

B.B. Fischer, T.I. Cox and R.M. Kerr   pp. 172-174

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Pasture Weeds

The effect of fertiliser on ragwort in pasture

A. Thompson and A.E. Saunders   pp. 175-178

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Effect of plant type on the response of ragwort to rates and times of 2,4-D application

P. Martin, A. Thompson, A.E. Saunders and A. Rahman   pp. 179-182

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Density and cover estimates of some non-palatable herbaceous pasture weeds

G.W. Bourdot and D. Kelly   pp. 183-186

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Seasonality of emergence and survival of nodding thistle

A.I. Popay and D. Kelly   pp. 187-191

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Daisy control in pasture using herbicides and nitrogenous fertilisers

R.B. Mitchell and F.A. Meeklah   pp. 192-195

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Vegetable Crops

Effect of weed competition on newly established asparagus

A. Rahman and P. Sanders   pp. 196-199

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Tolerance of asparagus to bromacil - results after five years

A. Rahman, P. Sanders and J.E. Waller   pp. 200-203

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Tolerance of asparagus and susceptibility of some weeds to dicamba and clopyralid

T.I. Cox and A. Ingle   pp. 204-206

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Control of Californian thistle and yarrow in asparagus with clopyralid

B.N. MacDiarmid and P.J. Dryden   pp. 207-210

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The effect of controlled atmosphere storage of asparagus on survival of insect passengers

R.E. Lill and G.J. van der Mespel   pp. 211-214

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Weed control in squash and water melons in Hawkes Bay

M.J. Hartley   pp. 215-218

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Control of solanaceous weeds in process snap beans

A.J. Geelen   pp. 219-223

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The effects of crop diversity on insect pests and yield of cabbage

G.J. Kenny and R.B. Chapman   pp. 224-227

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Spear sport of asparagus

L.H. Cheah   pp. 228-229

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New Products and Techniques

Root feeding in a grassland soil: observations from a rhizotron

Alan Carpenter   pp. 230-233

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Buprofezin: a selective pesticide for greenhouse whitefly control

N.A. Martin and P. Workman   pp. 234-236

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The sterilising effect of clofentezine and hexythiazox on female two-spotted mite

R.B. Chapman and J.W.M. Marris   pp. 237-240

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A microcomputer based pest management game

P.G. Fenemore and T.A. Stewart   pp. 241-243

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A rearing method for the New Zealand flow thrips

D.A.J. Teulon and D.R. Penman   pp. 244-245

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A rapid technique for screening fungicides for control of leaf curl (Taphrina deformans) in stonefruit

L.H. Cheah and K.G. Tate   pp. 246-248

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Cereals

Persistence of repeated annual applications of atrazine - results after eight years

A. Rahman, m.H. Gray and T.K. James   pp. 249-252

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Pirimicarb spray timing for rose-grain aphid control in barley

M.W. Stufkens and J.A. Farrell   pp. 253-255

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Barley yellow dwarf virus and aphid vectors in Canterbury, 1983-85

M.W. Stufkens and J.A. Farrell   pp. 256-259

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The effects of weeds on armyworm in maize

M.G. Hill and D.J. Allan   pp. 260-263

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A survey of yarrow control with clopyralid on Canterbury mixed cropping farms

G. Rutherford   pp. 264-266

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Drought induced tolerance to diclofop-methyl in cultivated oat

M.H. Foreman and R.J. Field   pp. 267-271

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Material from these papers was presented at the New Zealand Plant Protection Society's Annual Conference held at Quality Inn, Palmerston North on 12-14 August 1986.

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

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