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Proceedings of the NZ Weed and Pest Control Conference 34 (1981)

Introduction

Presidential address to the 33rd Conference 1980

G.C. Atkinson   p. 14

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Opening address to the 33rd Conference 1980

E.K. Barrett, Chairman, Tauranga County Council   pp. 15-16

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Lucerne

Control of certain hard to kill weed species in lucerne with hexazinone

P.M.S. Lane and M.J. Cornwell   pp. 17-20

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Effect of bacterial wilt and verticillium wilt on six lucerne cultivars

M.W. Dunbier, F.R. Sanderson and T.J. Ellis   pp. 21-24

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The effect of cutting management and fungicide application on coumestrol levels in three lucerne cultivars

R.G. Purves, N.D. Hood and M.W. Dunbier   pp. 25-28

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Seed Production

Weed control in seedling 'Grasslands maku' Lotus penduncalatus

M.P. Rolston and J.D. Henderson   pp. 29-33

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Weed control in sainfoin and serradella

J.D. Henderson   pp. 34-36

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A relationship between seed yield of white clover and density of yarrow

G.W. Bourdot and J.H.B. Butler   pp. 37-38

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Hemiptera and other insects on South Island lucerne and lotus seed crops 1980-81

R.P. Macfarlane, J.A. Wightman, R.P. Griffin and D.N.J. Whitford   pp. 39-42

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Fungicide seed treatment to improve establishment of ryegrass and other forage plants

R.E. Falloon   pp. 43-47

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Herbicides for buckwheat

A. Ingle and T.I. Cox   pp. 48-50

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Weed control in lentils

J.H.B. Butler and W.A. Jermyn   pp. 51-54

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Disease problems in the production of broad bean seed

R.S.S. Liew and R.E. Gaunt   pp. 55-58

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Crops

Weed control in asparagus seedlings

A. Rahman, P. Sanders and A. Thompson   pp. 59-62

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Weed control in newly transplanted asparagus

A. Rahman, A. Thompson and P. Sanders   pp. 63-66

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The use of glyphosate in asparagus - preliminary observations

T.I. Cox   pp. 67-69

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Invertebrate pests on asparagus in waikato

R.N. Watson and R.J. Townsend   pp. 70-75

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Control of seedling cleavers in young onions

J.J.C. Scheffer   pp. 76-78

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Fodder beet tolerance to lenacil

Martin langlands, J.H.B. Butler and G.A. Hurrell   pp. 79-80

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Control of weevils in seedling brassicas

K.M. Stewart   pp. 81-85

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Orchard Crops and Shelter

Biology and control of grape phylloxera in North Island vineyards

P.D. King, J.S. Meekings and S.M. Smith   pp. 86-91

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Chlorpyrifos for insect control in grapes and kiwifruit

C.J. Sharpe and E.A. Upritchard   pp. 92-95

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Further evaluation of procymidone for grey mould control in grapes

D.J.I. Jacobson and B.P. O'Connor   pp. 96-99

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Further experiments with methiocarb on blueberries

P.T. Holland, D.W. McFarlane and G. Lawn   pp. 100-103

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More herbicides for soil conservation tree nurseries

A.N. Gilchrist   pp. 104-106

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Pasture Weeds

The effect of different pasture cultivars on barley grass invasion

A.I. Popay, M.J. Harley and G. Crouchley   pp. 107-110

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Effect of pasture cover on the germination of certain weed seeds

H.T. Phung and A.I. Popay   pp. 111-113

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The effect of grazing and pasture species on the survival of Scotch thistle

M.J. Hartley   pp. 114-116

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Control of rushes and thistles in pastures by goat and sheep grazing

M.P. Rolston, M.G. Lambert, D.A. Clark and B.P. Devantier   pp. 117-121

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3,6-dichloropicolinic acid/MCPB for control of nodding thistle in pasture

G.R. Rutherford, P.D. Bell and C.D. Forgie   pp. 122-125

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Persistence of 3,6-dichloropicolinic acid and dicamba residues in the soil

A. Rahman, B.E. Manson and P. Sanders   pp. 126-129

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Control of Rautahi (Carex geminata) with glyphosate

P. Sanders, D.K. Edmonds and A.I. Popay   pp. 130-131

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Chemical control of mouse-ear hawkweed

F.A. Meeklah, R.B. Mitchell and H. McMillan   pp. 132-136

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Chemical control of daisies in otago/Southland pastures

F.A. Meeklah, R.B. Mitchell and H. McMillan   pp. 137-140

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Scrub Weeds

Control of woolly nightshade

T.K. James   pp. 141-143

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Control of sweet brier using picloram, triclopyr and 2,4,5-T applied with modified drench gun

R.W. Bristol   pp. 144-147

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A comparison of a picloram/triclopyr mixture with other herbicides for blackberry control

C.D. Forgie, P.G. Lobb and P.J. Dryden   pp. 148-151

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The failure of fosamine and glyphosate to give long-term control of blackberry in Northland.

G.P. Dempsey   pp. 152-155

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Pasture Pests I

Screening seed protectants against black field cricket

R.H. Blank, D.S. Bell and N.R. Cox   pp. 156-160

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Insecticide rates, seeding rates and australian soldier fly control in pasture

L.N. Robertson, R.H. Davison and A.C. Firth   pp. 161-163

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Isofenphos as a larvicide for black beetle

R.N. Watson, R.J. Townsend and R.S. Marsden   pp. 164-166

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Pyrethroid resistance mechanisms in porina caterpillars

T.W. Jordan and C.K. Chang   pp. 167-169

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The potential use of nematodes for the control of pasture pests

T.A. Jackson, R.A. Bedding, T.E.T. Trought, W.M. Kain and R. East   pp. 170-172

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Preliminary field studies on the use of an indigenous parasitic nematode for control of porina

W.M. Kain, T.K. Wyeth and A.J. Kale   pp. 173-175

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Maize

Control of grass weeds in maize fields showing decreased activity of EPTC + R25788

A. Rahman, B. Burney and T.K. James   pp. 176-179

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The effect of tillage technique on insect pest damage to seedling maize

Alan Carpenter   pp. 180-181

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Control of black beetle in maize using baits

R.N. Watson, R.J. Townsend and R.S. Marsden   pp. 182-185

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Cereals

Tolerance of spring wheat cultivars to herbicides used for wild oat control

W.J.P. Mitchel   pp. 186-188

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The tolerance of barley cultivars to wild oat herbicides

J.H.B. Butler and F.C. Allen   pp. 189-191

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New products and control strategies for speckled leaf blotch in wheat

W.J. Thomson, J. Sutcliffe and R.E. Gaunt   pp. 192-194

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The timing of spray applications against powdery mildew and leaf rust in barley

L.G. Lim and R.E. Gaunt   pp. 195-198

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New Products and Techniques

Comparison of proprietary formulations of paraquat in white clover seed crops

J.H.B. Butler, F.C. Allen and A.J. Lister   pp. 199-202

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DPX 4189 - A new herbicide for weeed control in cereals

M.J. Cornwell and P.M.S. Lane   pp. 203-205

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Decamethrin - A new pyrethroid insecticide for New Zealand growers

A.M. Cliffe and M.S. Venning   pp. 206-211

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Preliminary tests of the controlled droplet applications technique against a number of insect pests

T.E.T. Trought   pp. 212-215

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A comparison of controlled droplet application and hydraulic nozzles to control blue-green lucerne aphid and Argentine stem weevil

N.R. Wrenn and R.A. Skinner   pp. 216-220

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Pasture Pests II

Interactions between artificial fertilisers and grass grub larvae: Preliminary studies

R.A. Prestidge, G.P. Burton and S. van der Zijpp   pp. 221-224

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Chemical control of grass grub in the southern North Island: Results of 1977-79 trials

Alan Carpenter, T.K. Wyeth and P.J.T. Allan   pp. 225-228

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Evaluation of the solid stream application technique for grass grub control in the northern North Island

R. East, B.E. Willoughby and n.R. Wrenn   pp. 229-233

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Do soil applied insecticides control grass grub beetles?

R.F. Henzell, D.R. Lauren, G.D.G. du Toit and N.R. Wrenn   pp. 234-238

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Insecticides for control of adult grass grub IV comparative activity of insecticides in contact and soil bioassays

P.T. Holland, R.F. Henzell and R.A. Skinner   pp. 239-242

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Comparison of two spray date prediction techniques for control of grass grub beetles

D.R. Lauren, R.F. Henzell and N.R. Wrenn   pp. 243-246

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Appendices

Annual report 1980-81

  p. 260

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Material from these papers was presented at the New Zealand Plant Protection Society's Annual Conference held at Autolodge, Blenheim on 11-13 August 1981.

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

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