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Proceedings of the NZ Weed and Pest Control Conference 41 (1988)

Introduction

Presidential address to the 40th Conference, 1987

T.M. Patterson   p. 14

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Address by Sir David Beattie to 40th Annual Conference

D. Beattie   pp. 15-20

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Annual report 1987-88

A.J. Popay   p. 20

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Cereals

Residual activity of triasulfuron in several New Zealand soils

J.K. James, A. Rahman and T.M. Patterson   pp. 21-25

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Disease measure in barley crops

H.G. Whelan and R.E. Gaunt   pp. 26-29

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Control of Rhynchosporium scale of barley by seed and foliar fungicides

J.E. Sheridan and D.K. Nendick   pp. 30-33

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Effects of cereal host, insecticide and locality on the incidence of barley yellow dwarf virus in the South Island

M.W. Stufkens and J.A. Farrell   pp. 34-38

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General Weed Control and Herbicide Performance

Efficacy, persistence and movement of clethodim in two soils

A. Rahman, T.K. James and J. Mortimer   pp. 39-43

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Effect of quizalofop on some annual and perennial grass weeds

P. Sanders, T.K. James and A. Rahman   pp. 44-48

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Persistence and movement of quizalofop in two soils

T.K. James, A. Rahman and J. Mortimer   pp. 49-52

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Leaf expansion effects on post-emergence herbicide performance

R.L. Dickson, M. Andrews and R.J. Field   pp. 53-56

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Mulches for weed control in asparagus and kiwifruit

A. Ingle and W.T. Bussell   pp. 57-60

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Current status of biological control of alligator weed in New Zealand

B.A. Philip, C.J. Winks, P.W. Joynt and O.R.W. Sutherland   pp. 61-65

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Chemical control of field horsetail

C.C. Bell and A.I. Popay   pp. 66-69

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Grecian thistle phenology and control

F.C. Allen and R.A. Harrison   pp. 70-74

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Chemical control of fleabane (Pulicaria dysenterica)

C.C. Bell and A.I. Popay   pp. 75-76

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Pests and Diseases in Vegetables and Ornamentals

The cost of integrated pest management for cymbidium orchids

N.A. Martin and P. Workman   pp. 77-80

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Pendimethalin for early season weed control in onions in Pukekohe

J.J.C. Scheffer and R.J. Hume   pp. 81-84

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Insecticide resistance in green peach aphid from potatoes in South Auckland

P.J. Cameron and G.P. Walker   pp. 85-89

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Studies on asparagus tip rot

A. Carpenter, N. Grbavac, A. Stocker, G.J. van der Mespel and A. Marshall   pp. 90-95

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Essential oil yields from blighted fennel

I.C. Harvey, R. Welsh, N.G. Porter and H. Hamblin   pp. 96-98

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Bacillus thurgingiensis for control of tomato fruitworm

P.J. Cameron and G.P. Walker   pp. 99-100

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Thrips control on nerine flowers with fluvalinate

A. Carpenter and A. Stocker   pp. 101-102

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Pasture and Crop Pests and Diseases

Economics of using a grooved roller for control of grass grub in Southland

R.F. van Toor   pp. 103-107

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Subsurface application of the bacterium Serratia entomophila for control of grass grub in Canterbury

T.A. Jackson, J.F. Pearson, T.M. Broad, M. O'Callaghan and H.K. Mahanty   pp. 108-112

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The effect of potassium fertiliser, stand age and damage history on response of lucerne to Sitona discoideus larvae

S.L. Goldson and J.R. Proffitt   pp. 113-117

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Survey of Argentine stem weevil and hessian fly in prairie grass in the northern north Island

R.A. Prestidge and S.G. van der Zjipp   pp. 118-120

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Infection of nine white clover cultivars by Sclerotinia trifoliorum and Ditylenchus dipsaci

R.N. Watson   pp. 121-125

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Effect of myclobutanil and propiconazole on endophyte and rust fungi in ryegrass

G.C.M. Latch and M.J. Christensen   pp. 126-128

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Endophytes in Northland ecotypes of hybrid ryegrass

G.J. Piggott, H.M. Morgan and R.J. Bakker   pp. 129-131

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A simplified technique for rapid estimation of adult Argentine stem weevil populations

G.M. Barker and P.J. Addison   pp. 132-134

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Effect of the bacterium Serratia entomophila on feeding and pasture damage by grass grub larvae

T.A. Jackson   pp. 135-137

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Low temperature activity and infectivity of a parasitic nematode against porina and grass grub larvae

P.J. Wright and T.A. Jackson   pp. 138-140

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Forest, Scrub and Shelter

Silwet L-77: A new development in spray adjuvants

P.J.G. Stevens, R.E. Gaskin and J.A. Zabkiewicz   pp. 141-145

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Silwet M improves performance of glyphosate on gorse

J.M. Balneaves and B.J. Fredric   pp. 146-148

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Effect of Silwet L-77 on uptake and translocation of metsulfuron on gorse

J.M. Balneaves and B.J. Fredric   pp. 149-152

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Surfactant effects on activity of glyphosate and haloxyfop in pampas grass

R.E. Gaskin and B. Murray   pp. 153-155

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Herbicides for pampas control

N.A. Davenhill   pp. 156-159

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Control of wilding confiers by applying herbicides to cut stumps

L.R. Crozier, T.R. Zych and N.J. Ledgard   pp. 160-163

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Simazine rates and mixtures for poplar and willow cuttings

A.N. Gilchrist   pp. 164-168

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Effect of water volume on metsulfuron applied to gorse

A.L. Vanner and J.W. Ray   pp. 169-170

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Effects of metsulfuron methyl and Silwet l-77 on the control of young gorse

J.M. Balneaves   pp. 171-172

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Response of Robinia pseudoacacia to three herbicides

J.M. Balneaves and O. Krijgsman   pp. 173-174

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Mites

Predicting European red mite egg hatch on apricots. 1. A degree-day model

M.G. Hill and G.F. McLaren   pp. 175-178

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Predicting European red mite egg hatch on apricots. 2. The use of historical temperature data

M.G. Hill and G.F. McLaren   pp. 179-182

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Use of a computer model for recommending miticide spray timing against european red mite on apples

A.J. Hayes, G.F. McLaren and J.T.S. Walker   pp. 183-188

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Monitoring azocyclotin and propargite resistance in European red mite

M.H. Bowie, R.B. Chapman and J.T.S. Walker   pp. 189-192

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Evaluation of fungicide programmes compatible with integrated control of European red mite

J.T.S. Walker, G.T. Baynon, P.W. Shaw and d. Cassidy   pp. 193-197

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Effect of hexythiazox on the development of two-spotted mite

R.B. Chapman and D.R. Penman   pp. 198-201

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Using Phytoseiulus to control two-spotted mites in strawberries

J.G. Charles   pp. 202-206

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Pasture Weeds

Wind dispersal of nodding thistle seeds and pappi

D. Kelly, H. Cameron and J. Alex   pp. 207-209

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Emergence of nodding thistle seedlings in pasture at two sites in the Waikato

P. Martin and A. Rahman   pp. 210-213

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Influence of sheep grazing on the survival and fate of nodding thistle rosettes

P. Martin and A. Rahman   pp. 214-218

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Resistance of nodding thistle to MCPA in hawkes Bay

K.C. Harrington, A.I. Popay, A.G. Robertson and H.G. McPherson   pp. 219-222

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Spot treatment of ragwort and nodding thistle with DPX-L5300

P. Martin, A. Thompson and A. Rahman   pp. 223-225

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The flowering behaviour of barley grass

A.I. Popay and F.C. Allen   pp. 226-230

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Differential tolerance of MCPA among giant buttercup (Ranunculus acris) biotypes in Takaka, Golden Bay

G.W. Bourdot and G.A. Hurrell   pp. 231-234

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A comparison of granular herbicides for chilean needle grass (Stipa neesiana) control

G.A. Hurrell and G.W. Bourdot   pp. 235-237

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Fruit Crops

Winter inspection of kiwifruit orchards for scale

R.H. Blank and M.H. Olson   pp. 238-242

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Laboratory evaluations of insect growth regulators against lightbrown apple moth

R.A. McGhie and A.R. Tomkins   pp. 243-248

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Serratia entomophila for control of grass grub in strawberries

M. O'Callaghan and T.A. Jackson   pp. 249-252

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Weed control in newly planted autumn-cropping raspberries

T.K. James, J. Mortimer and A. Rahman   pp. 253-257

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Weed control improves the growth and yield of young fruit trees

M.J. Hartley   pp. 258-261

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Thrips control on stonefruit at harvest with fluvalinate

D.A.J. Teulon and D.R. Penman   pp. 262-266

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Effect of ergosterol biosynthesis inhibitor fungicides during blossoming on leaf curl in nectarines

L.H. Cheah, K.G. Tate, A.W. Hunt and R.S. Gawith   pp. 267-270

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Dicarboximide resistance and disease control in brown rot of stonefruit

P.A.G. Elmer and R.E. Gaunt   pp. 271-274

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A review of paclobutrazol use on New Zealand stonefruit crops

W.F. Leonard, G.B. Brown and G.W. Harris   pp. 275-279

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Effect of paclobutrazol on kiwifruit and avocado

B.F. Evans, W.F. Leonard and D.R. Grimshaw   pp. 280-285

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Thrips as potential vectors of brown rot of stonefruit in New Zealand

E.C. Ellis, D.R. Penman and R.E. Gaunt   pp. 286-287

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Pesticide Resistance Report

The New Zealand Committee on Pesticide resistance 1988 Summary

G.S. Elliott, M.S. Moore and C.H. Wearing   pp. 288-292

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New Products and Techniques

Blightgame - a computer aid for teaching plant disease management

T.M. Stewart   pp. 293-295

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The Weed-a-metre

N.A. Davenhill and P. Hall   pp. 296-297

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An extraction method for sampling small insect from vegetation

D.A.J. Teulon and D.R. Penman   pp. 298-300

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A new multifunctional spray adjuvant

R. McLean   pp. 301-302

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Material from these papers was presented at the New Zealand Plant Protection Society's Annual Conference held at Vacation Inn, Auckland on 9-11 August 1988.

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.