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First International Weed Control Conference (1992)

Monash University, Melbourne, Australia.
17-21 February 1992.
Peer-reviewed proceedings edited by J.H. Combellack, K.J. Levick, J. Parsons and R.G. Richardson.
Published by Weed Science Society of Victoria Inc.
ISBN 0 9599210 4 4

Volume 1

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Invited papers

Have ecological and biological studies improved weed control strategies?
R.F. Norris   pp. 7-33
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Designing more efficient herbicides
D.A. Evans   pp. 34-42
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The importance of weeds and ways of reducing concerns about methods for their control
J.H. Combellack   pp. 43-63
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Biological and other alternative control measures
A.K. Watson   pp. 64-73
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Herbicide development and marketing of weed control in the United States of America
J.F. Ellis   pp. 74-82
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Weed ecology, biology and spread
R.H. Groves   pp. 83-88
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Biology, ecology and spread of weeds of temperate crops
J.C. Streibig, C. Andreasen and J.E. Jensen   pp. 89-93
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Mechanisms of establishment and spreading of Cyperus rotundus the worst weed of warm regions
M. Horowitz   pp. 94-97
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Annual dormancy patterns of weed seeds influence weed control
C.M. Karssen and H.J. Bouwmeester   pp. 98-104
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Nutritional control of bud growth in perennial weeds
G.I. McIntyre   pp. 105-109
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Exclusion of foreign weeds from the United States of America by USDA APHIS
R.G. Westbrooks   pp. 110-112
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Weed competition and interference in cropping systems
R.D. Cousens   pp. 113-117
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Weed impact on wheat, maize and other temperate crops
R.L. Zimdahl   pp. 118-122
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Weed impact on rice and other tropical crops
M.J. Kropff and K. Moody   pp. 123-126
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Impact of weeds on developing countries
W. Koch   pp. 127-133
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Impact of the pan-tropical weed, Parthenium hysterophorus L. on human affairs
G.H.N. Towers and P.V. Subba Rao   pp. 134-138
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Impact of weeds on animal productivity
J.A. Edgar   pp. 140-144
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The impact of weeds in national parks
W.M. Lonsdale   pp. 145-149
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Efficient application of herbicides
H. Göhlich   pp. 150-158
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Herbicide application
P.C.H. Miller   pp. 159-164
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Spray equipment for applying herbicides in ultra-low volume
C.G. McWhorter and J.E. Hanks   pp. 165-167
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Biochemistry of herbicides and their relationships with animal toxicity
S. Matsunaka   pp. 168-172
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Effect of environmental factors on herbicide performance
P. Kudsk and J.L. Kristensen   pp. 173-186
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Increasing efficiency with adjuvants and herbicide mixtures
J.M. Green   pp. 187-192
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Prediction of herbicide persistence and phytotoxicity of residues
I.G. Ferris and B.M. Haigh   pp. 193-207
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Identifying ways of optimizing herbicide use in crops
G.W. Cussans   pp. 208-214
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Efficient forest vegetation management
S.M. Zedaker   pp. 215-219
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Efficient herbicide use in tropical crops
K. Moody   pp. 220-223
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Efficient weed control in wheat Triticum aestivum L. and maize Zea mays L.
J.D. Nalewaja   pp. 224-230
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Biochemical mechanisms of herbicide resistance and selectivity
R. Scalla   pp. 231-235
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Designing strategies to delay development of resistance to herbicides
D. Shaner, A. Sinha and R. Braddock   pp. 236-239
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Classical biological control of weeds
J. Waage   pp. 240-247
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Biological control of weeds in Malaysian plantations
P.A. C. Ooi   pp. 248-255
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Biological control of weeds in waterways and on public lands in the south-eastern United States of America
T.D. Center   pp. 256-263
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Potential for developing and marketing mycoherbicides
G.E. Templeton   pp. 264-268
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Development and commercialization of biocontrol agents
B.A. Auld   pp. 269-272
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Grazing animals as biological control agents
I. Popay and R. Field   pp. 273-277
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Integrated weed management techniques to reduce soil degradation
I. Okezie Akobundu   pp. 278-288
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Strategies to reduce dependence on herbicides
W. Morgan   pp. 289-294
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Non-chemical weed control in tropical crops of developing countries
G. J. Wells   pp. 295-301
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Natural products as herbicides
S.O. Duke   pp. 302-305
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Herbicide research and development
E. M. Beyer   pp. 306-310
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Herbicide development for weeds in temperate crops - a European perspective
R.P.L. Plumbe, J. Rognon and T. Szoeke   pp. 311-313
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Herbicide Registration
G. N. Hooper   pp. 314-319
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Development of crops resistant to herbicides
M.J. Dalling   pp. 320-324
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CAST's role concerning contentious issues related to weed control
L.S. Jordan   pp. 325-328
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Improving herbicide safety to the environment and the operator
D.C. Matthews   pp. 329-331
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Extension and education in relation to herbicides
A.P. Appleby   pp. 332-335
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Effective marketing of weed control
M.A. Jackson   pp. 336-338
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Development and marketing of herbicides in developing countries
S. Campiranon   pp. 339-341
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Volume 2

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Submitted papers and poster summaries

Summary of outcomes and recommendations from The First International Weed Control Congress
H. Combellack and G. Friesen   pp. 13-33
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Are consumer concerns being addressed by industry and government?
J. Alexandra   pp. 35-45
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A method to compare dose-response behaviour in the field
K. Alness   pp. 46-48
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Aquatic plant management through control of plant canopy
L.W.J. Andreson   p. 49
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Weed communities described by multivariate analyses
D. Andreasen, J.E. Jensen and J.C. Streibig   pp. 50-54
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Spot-narrow band helicopter sprayer
J. Antognini   p. 55
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Influence of photoperiod during seed development on duration of seed dormancy in Avena fatua L.
L.J. Armstrong and S.W. Adkins   p. 56
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Weed communities in rice granary areas in Peninsular Malaysia
M. Azmi, B.B. Baki and M. Mashhor   pp. 57-60
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Rice/red rice interference studies
J.B. Baker and J.W. Shrefler   p. 61
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The protocol of herbicide application in direct seeded rice in Malaysia
B.B. Baki and M. Azmi   pp. 62-65
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Arkansas experience with reduced rate herbicide recommendations
F.L. Baldwin, C.B. Guy and L.R. Oliver   pp. 66-69
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The inhibition of herbicide resistance in Avena sterelis ssp. ludoviciana biotype SAS 1
A.R. Barr, A.M. Mansooji, J.A.M. Holtum and S.B. Powles   pp. 70-72
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Soil and groundwater contamination by citrus selective residual herbicides
G.D Barreda, E. Lorenzo, M. Gamon, E. Monteagudo, A. Saez, J. Garcia de la Cuadra, C. Ramos, A. del Busto   pp. 73-75
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Reduced nitrogen inputs in wheat: the effects on weed crop competition and weed population dynamics
J.M. Baylis, A.R. Watkinson, G. Lintell-Smith and L. Firbank   pp. 76-80
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Sheep grazing as a weed control practice in seedling alfalfa
C.E. Bell and J.N. Guerrero   p. 81
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Postmergence quackgrass Elytrigia repens control with nicosulfuron in corn
P.C. Bhowmik and B.M. O'Toole   pp. 82-85
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Leaching of metolachor in some South African soils
J.J. van Biljon, P.C. Nel and H.T. Groeneveld   pp. 86-88
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Movement, persistence and activity of herbicides in soils: development of a computer simulation model
W.M. Blacklow   pp. 89-91
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Development of Canola (Brassica Napul) expressing resistance to acetolactate systhase inhibiting herbicides
R.E. Blackshow, D. Kanashiro, I. Babic, F. Bekkaoui, W.L. Crosby and M.M. Moloney   p. 92
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Weed management with sustainable cropping systems
D. Blesing   p. 93
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A potential mycoherbicide for the control of pehnoxyherbicide-resistant giant buttercip (Ranunculus acris) in dairy pastures
G. Bourdot and I. Harvey   p. 94
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Aquatic plant management in Australia (not necessarily weed control!)
K.H. Bowmer   pp. 95-98
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Interference of common cocklebur Xanthium strumarium L. in peanut Arachis hypogaea L.
B.J. Brecke and S.S. Royal   pp. 99-100
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Melampsora hypericorum, a rust fungus with potential in the biological control of tutsan, Hypericum androsaemum
E. Bruzzese and I.G. Pascoe   pp. 101-102
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The mechanism of organosilicone surfactant-induced uptake of amine and ester formulations of tricolpyr
R.D. Buick and R.J. Field   pp. 103-105
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Possible bio-control of native weeds by native insects
M.H. Campbell and P.J. Wykes   pp. 106-108
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Co-ordinated control of silverleaf nightshade, Solanum elaeagnifolium, reduced its spread rate
R.J. Carter   pp. 109-112
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Improving herbicide performance with synergists that modulate metabolism
J.C. Casely   pp. 113-115
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Herbicides in archeology
P. Catizone, G. Toden and R. Miravalle   p. 116
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Persistence of picloran in Brazilian soil
A.L. Cerdeira and R. Forster   p. 117
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Exploiting the clonal variability of Chondrilla juncea to detect virulent strains of Puccinia chondrillina for use in Australia
P. Chaboudez, S. Hasan and C. Espiau   pp. 118-121
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Weed problems in Saudi Arabian cereal crop production
S.A Chaudhary and A.A. Al-Juwayed   pp. 122-124
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Managing brome grass in cropping systems
A.H. Cheam and S.I. Lee   p. 125
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Sulfonylurea resistance in annula ryegrass (Lolium Rigidum) in Australia
J.T. Christopher, M. Burnet, S.B. Powles, J.A.M. Holtum and D.R. Liljegren   pp. 126-128
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Post application response of Eleocharis kuroguwai to bensulfuron-methyl
J.C. Chun and H.S. Shin   pp. 129-131
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Mobile operating station for ULV research
J.H. Combellack and J. Bonilla   p. 132
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Differential tolerance of lupin cultivars (Lupinus angustifolius) to triazine herbicides
J.A. Cooper and D.G. Bowran   pp. 133-135
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Influence of tillage practices on weed population dynamics
G. Covarelli and F. Tei   p. 136
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Prediction and practice in biological control
J.M. Cullen   pp. 137-140
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Population dynamics of herbicide resistant annual ryegrass, Lolium rigidum, in pasture
R.M. Davidson   pp. 141-143
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Agrichemical industry initiatives to combat development of herbicide resistance
R.C. Davis   pp. 144-147
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Control of Gleditsia triacanthos
J.J. Dellow, R.B. Trounce and M. Sargeant   pp. 148-150
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Expansion of host-plant range of a biocontrol agent Trichilogaster acaciaelongifoliae(Pteromalidae) released against the weed Acacia longifolia in South Africa
G.B. Dennill, D. Donnelly and S.L. Chown   p. 151
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Impact of microbial aquatic weeds on catfish production in the United States
C.P. Dionigi   pp. 152-154
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Biological control of Paterson's curse (Echium plantagineum) lessons from the programme using the leaf- mining moth Dialectica scalariella
J. Dodd   pp. 155-157
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Management for vulpia control in pasture
P.M. Dowling, A.R. Leys and B. Plater   pp. 158-159
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Subterranean clover living mulch: a systems approach
A.J. Enache, R.D. Illnicki and R.R. Helberg   pp. 160-162
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Renewed research in chemical control of Lantana camara L. in South Africa
D.J. Erasmus   pp. 163-165
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Chemical bush control with ethidimuron
M.P. Fourie   pp. 166-168
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Graminicides applied post-cutting control grasses in alfalfa Medicago sativa
C.L. Foy and H.L. Witt   pp. 169-171
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The role of allelopathic sunflower in cotton production
R.E. Frans and N. Semidey   pp. 172-174
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How important are long-term effects for weed control according to economic thresholds in cereals - an example for Apera spica-venti
B. Gerowitt   pp. 175-177
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Environmental responsibilities - an industry view
I.J. Graham-Bryce   pp. 178-187
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Multiple applications increase DPX-E9636 and nicosulfuron performance in corn
J.M. Green and M.S. Casini   p. 188
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Diclofop-resistance in a Lolium multiflorum biotype from Oregon
J.W. Gronwald, K.C. Betts, N.J. Ehlke and D.L. Wyse   pp. 189-191
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In vivo and in vitro interaction of chlosulfuron with acetolacate synthase (ALS) from chlorsulfuron- resistant and susceptible Arabidopsis thaliana
L.M. Hall and M.D. Devine   p. 192
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A possible role for carrier proteins in the ontogeny of epicuticular leafwaxes
N.D. Hallam and B.E. Juniper   pp. 193-197
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Impact of application methods on braken control using metsulfuron methyl
L.J. Hamilton   pp. 198-199
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Nimbya scirpicola causing orange- coloured stem spot on Eleocharis kuroguwai
Y. Harada, Harada, S. Imaizumi, H. Tanaka, H. Negishi, T. Fujimon, M. Yamada, R. Honkura and Y. Miura   p. 200
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Characteristics of the ideal orchard ground-cover species
K. Harrington   p. 201
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Studies on the allelopathic inhibition of yellow nutsedge growth by sweetpotato
H.F. Harrison and J.K. Peterson   p. 202
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Competition between three weed species and two crops
M.J. Hartley   pp. 203-207
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Precision directed row crop sprayers
R.G. Harvey and C.D. Kleppe   pp. 208-211
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An update of the biological control of common heliotrope in Australia using plant pathogens
S. Hasan   pp. 212-214
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Yield increases in cereals following control of two perennial weeds in South Australia
J.W Heap and C.J. Mitchell   pp. 216-218
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The carbon economy and ecological strategy of yarrow Achillea millefolium L.
F.L.F Henskens, R.J. Field and G.W. Bourdot   pp. 219-222
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Some notes on common weeds of rice in Sarawak
I.G. Ipor, I.K. Baki and M. Mashhor   p. 223
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Paraquat resistance in Solanum nigrum, Crassocephalum crepidioides, Amarathus lividus and Conyza sumatrensis in Malaysia
K. Itoh, M. Azmi and A. Ahmad   pp. 224-228
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Effect of simulated rainfall and adjuvants on the phytotoxicity of sulfonylurea herbicides
T.K. James and A. Rahman   pp. 229-232
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Wheatprogeny response to rpeharvest herbicide applications
L.S. Jeffery   pp. 233-236
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The missing link - the field communicator
L.O. Jellinek and C. Joannides   pp. 237-243
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Herbicide resistance: the stance of the agrochemical industry
A.R. Jutsum and D. Shaner   pp. 244-246
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Effect of times of weed controls, row spacing and density on growth and field of cumin
M. Kafy   p. 247
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The fates of seeds produced by lambs quarters (Chenopodium album L.) and pale smartweed (Polygonium lapathifolium L.) in herbicide evaluation plots
M. Kane, P.B. Cavers and J.J. O'Toole   p. 248
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Inter- and intra-populational genetic variation in seed dormancy of Digitaria ciliaris
M. Kataoka, K. Kataoka and K. Tateno   p. 249
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Challenges for Australian farm chemical training
J. Kent   pp. 250-252
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The effect of water quality, water volume and rate on the efficacy of glyphosate
K.J. Kirkland   p. 253
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Weed control systems for resource conservation
E.L. Knake   pp. 254-256
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The role of herbicides for adapted weed management in conservation farming
K.F. Kon, C.J. Hare and K.P. Tiw   pp. 257-260
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Research equipment for laboratory experiments with herbicides
J.L. Kristensen   pp. 261-262
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Tropical weeds: Status and trends for their control
R. Labrada   pp. 263-276
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New possibilities for targeted weed control in rice with Quinclorac and Quinclorac combinations
M. Landes, P. Munger, W. Nuyken and W. Unglaub   pp. 277-279
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Towards ecologically based noxious weed proclaimations and management strategies
D. Lane   pp. 278-280
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Passive and biological monitoring of workers exposed to several pesticides
T.L. Lavy, J.D. Mattice, J.H. Massey and B.A. Skulman   p. 281
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Supperssion of weeds by competitive wheat cultivars and interaction with herbicide
D. Lemerle and R.D. Cousens   pp. 282-284
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Wheat waxes and wettability
K.Levick and J. Nicholls   pp. 285-286
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Balancing economic benefits and consumer concerns
B. Lloyd   pp. 287-289
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Prediction of yeild loss based on relative leaf cover of weeds
L.A.P. Lotz, M.J. Kropff, B. Bos and J. Wallinga   pp. 290-292
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Herbicide drift and off-target damage in New Zealand
J. Maber and G. Pennell   pp. 293-296
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Integrated approach to control the wasteland weed Parthenium hysterophorus
M. Mahadevappa, R.S. Kulkarni and M. Mamatha   p. 297
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The first mycoherbicide in Canada: Colletotrichum gloeosporioides f. sp. malvae for roung leaf mallow control
R.M.D. Makowski and K. Mortensen   pp. 298-300
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Growth comparisons of sulfonylurea resistant and susceptible biotypes
G.A. Mallory-Smith, D.C. Thill, M. Alcocer-Ruthling and C.R. Thompson   pp. 301-303
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The spectrum and mechanism of herbicide resistance in wild oats (Avena sterelis biotype SAS 1)
A.M. Mansooji, C. Maneechote, J.A.M. Holtum and S.B. Powles   pp. 304-306
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Dominant weed species along the major roads in Peninsular Malaysia
M. Mansor, K. Mohamed and A. Jaafar   pp. 307-310
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Weed control in organic farming systems
T. Marshall   pp. 311-314
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Integrated weed management systems for the control of sand fescur (Vulpia fasciculata) in barley in South Australia
R. Matic and I.D. Black   pp. 315-317
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Aspects of the population dynamics of selection for herbicide resistance in Lolium rigidium (Gaud)
J.M. Matthews and S.B. Powles   pp. 318-320
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Overstory-understory relationship for a short-lived perennial weed (Gutierrezia sarothrae) growing on shortgass prairie in New Mexico, USA
K.C. McDaniel, L.A. Torell and J.W. Bain   p. 321
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Goats for chemical free weed control
B.A. McGregor, J. Hall, M. Wener and T. Squire Wilson   p. 322
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Weed control in certain crops planted in sugar cane interrows in Mauritius
L.F.G. McIntyre   pp. 323-325
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Biological control of ragwort, using the leaf and crown boring moth, Cochylis atricapitana Stephens
D.A. McLaren   pp. 326-329
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Spray-topping of wild oats (Avena spp.) in wheat with selective herbicides
R.W. Medd, M.G. McMillan and A.S. Cook   pp. 330-332
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Techniques for monitoring seed banks of annual grass weeds on arable soils
R.W. Medd   pp. 333-335
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Government agencies and public awareness in the management of aquatic weeds in Australia
D. S. Mitchell   pp. 336-339
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Evaluation of soil solarization to control weeds and nematodes
M. Mohammad-Reza and F. Teymouri   p. 340
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A study of the weeds associated with forest nursery stocks in northern Iran
M. Mohammadi   pp. 341-346
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Management guidelines derived from ecological studies of prickly acacia (Acacia nilotica)
L.M. Mooy, J.C. Scanlan, M.P. Bolton and W.J. Dorney   pp. 347-349
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Safeners, herbicides and grain sorghum microsomes
D.E. Moreland and F.T. Corbin   pp. 350-352
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Cover plants in field planted leek: impact on yield, insect pests and nitrogen availability in the soil
H. Muller-Scharer, C.A. Potter and B. Hurni   pp. 353-355
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Alternaria zinniae: a candidate for the biocontrol of Xanthium weeds
D.B. Nehl and J.F. Brown   pp. 356-358
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Evaluation of techniques used in conventional bioassays for determining atrazine activity in soil
P.C. Nel, R. Mennega and C.F. Reinhardt   pp. 359-361
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Integration of prescribed fire and sub lethal chemical defoliation for controlling shrub populations in Australian semi-arid woodlands
J.C. Noble, A.C. Grice, N.D. MacLeod and W.J. Muller   pp. 362-364
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Effect of aquatic weeds on nutrient removal from domestic sewage
Y. Oki   pp. 365-371
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Germination and after-ripening responses in Amaranthus retroflexus seed
E.N. Omami, R.W. Medd and A. Haigh   pp. 372-374
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A multi period economic model for conrol of wild oats (Avean fatua)
S. Pandey and R.W. Medd   pp. 375-377
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Potential economic benefit from research into alternative forms of wild oat (Avena spp.) control
S. Pandey, R.W. Medd and R.K. Lindner   pp. 378-380
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The role of prediction in determining the quarantine significance of weeds
F.D. Panetta   pp. 381-383
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Primisulfuron for weed control in maize (Zea mays L.)
J.W. Peek and C.C. Kupatt   pp. 384-386
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Bugg cover crops-vegetables relay cropping to reduce pesticide dependance
S.C. Phatak, D.R. Sumner, L.D. Chandler, R.B. Chalfant, J.D. Gay and R.L. Bugg   p. 387
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Development and commercialization of rust (Puccinia canaliculata) for biological control of yellow nutsedge (Cyperus esculentus L.)
S.C. Phatak   pp. 388-390
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Weed control in 'organic' arable crops in New Zealand
I. Popay, M. Daly, T. Knight, W. Stiefel and S. White   pp. 391-393
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Worldwide maize (Zea mays L.) response to primisulfuron
P.J. Porpiglia and G.R. Gillespie   pp. 394-396
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Some aspects of biological control of weeds in forestry
R. Prasad   pp. 398-402
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The influence of sun and shade on herbicidal activity and translocation
C. Price and I. Ipor   pp. 403-406
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Some aspects of the biology of creeping knapweed (Acroptilon repens) in Victoria
G.H. Pritchard   pp. 407-409
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Primisulfuron interaction with soil applied insecticides in corn (Zea mays)
S.W. Pruss and M.D. Johnson   pp. 410-413
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Altitudinal distribution of Ethiopian agrestals with regard to their life forms and origins
L. Pulschen   pp. 414-420
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Temperature influences on the level of resistance to paraquat in biotype of Hordeum leporinum Link
E. Purba, C. Preston and S.B. Powles   pp. 421-423
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Determination of yeild and herbicide residues in asparagus spears after treatment with some post-emergence herbicides
A. Rahman, P. Saunders and D.R. Lauren   pp. 425-428
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Effects of the herbicide isoproturon on water hyacinth and associated organisms in a small pond
B.C. Rana and J.I. Nirmal Kumar   p. 429
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Development of Striga hermonthica on maize and sorghum in western Kenya
J.K. Ransom and G. Odhiambo   pp. 430-433
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Weeds of South Khorassan saffron fields
M.H. Rashed   p. 434
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Control of Pampas grass (Cortaderia spp.) by oversowing with selected grass species
J. Ray, B. Richardson and J. Zabkiewicz   p. 435
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Atrazine persistence in some South African soils
C.F. Reinhardt and P.C. Nel   pp. 436-438
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Silvicultural strategies for managing competing vegetation: future research directions in Canada
P.E. Reynolds   pp. 439-441
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Evaluation of allelochemicals for their herbicidal activities
V. Rizvi and S.J.H. Rizvi   p. 442
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Synergistic effects of sulfcarbamide on selected herbicides
D.W. Rush and M.L. Atwater   p. 443
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Cuscuta control in vegetable crops in the United Arab Emirates (U.A.E.)
A.R. Saghir, S. Itani and A. Ahmad   p. 444
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Relation between the behaviour in soil and the biological effects of herbicides in western Europe countries
J-F. Salembier, A. Copin, R. Deleu, M. Gomand and H. Lorette   pp. 445-450
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Interaction of growth factors in competition between weeds and crops
C.D. Salisbury and J.M. Chandler   pp. 451-453
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Propogation, impact and management of Elymus repens in continuous cereal cultivation
J. Salonen   pp. 454-456
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Effectiveness of sodium chloride and 2, 4-D in controlling Parthenium hysterophorus L. and other weeds in late shown wheat
P.A. Sarkar   pp. 457-460
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Utilization of phyllophane bacteria to augument the efficacy of the mycoherbicide Colletotrichum truncatum
D.A. Schisler, K.M. Howard and R.J. Bothast   pp. 461-464
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Significance of weeds in semi-permanent and permanent farming systems in the coastal area of Togo
W. Schmid   pp. 465-469
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Developing a successful programme for marketing herbicides in developed countries
P.M. Schmidt   pp. 470-472
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Influence of soil humic and fulvic acids and herbicides linuron and ametryne on the growth of Pisum sativum on nutrient solution
N. Senesi, E. Loffredo and G. Padovano   p. 473
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The effect of temperature on the establishment of the Paterson's Curse leaf mining moth, Dialectica scalariella (Zeller) (Lepidoptera: Gracillariidae) in Victoria
R.C.H. Shepherd and T.B. Morley   pp. 474-480
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Chemical and biological manifestations of glyphosate and diluent ion interactions
D.G. Shilling, M.A. Mossier, J.W. Carter, W.T. Haller and G.E. MacDonald   pp. 481-483
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Weed impact on U.S. rice
R.J. Smith, T.A. Costello and K.W. VanDevender   pp. 484-486
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Integrated weed management with Onions involving wind erosion abatement
V. Souza-Machado and A. Ali   p. 487
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Seed biology of some broadleaved weeds occurring in South Australia: a review
D.W. Stephenson   pp. 488-494
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Interference between Echinochloa cruss-galli and soybean
I.A. Stoimenova and A.G. Mikova   pp. 495-502
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Lessons to be drawn from a herbicide trial programme in regard to annual ryegrass Lolium rigidium resistance
J.M. Swain, W. Roy, G.S. Gill and P.J. O'Connell   pp. 503-510
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Chemistry and allelopathy of some weedy Cyperus species
C.S. Tang, K. Komai and R.K. Nishimoto   p. 511
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Effect of environmental conditions on glyphosate activity applied to Urochloa panicoides
S. Tanpipat and S. Adkins   p. 512
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Selection with sethoxydim can give resistance to cyclohexanedione and aryloxyphenoxypropionate herbicides in annual ryegrass
F.J. Tardif, J.A.M. Holtum, S.B. Powles and R. Knight   pp. 513-515
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Weed supression by residue from hairy vetch and rye cover crops
J.R. Teasdale and C.L. Mohler   pp. 516-518
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Integrated control of wild oat, Avena fatua, in spring barley, Hordeum vulgare, in Idaho
D.C. Thill and C.A. Mallory-Smith   pp. 519-521
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BICOVER, a national research network on biological control of competing vegetation
D.G. Thompson, A.K. Watson, C. Dorworth, M. Dumas, G. Strunz, R. Jobidon, P. Haris, J. Castello and R. Wagner   pp. 522-526
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Development of paddy herbicide pyrazosulfuron-ethyl (NC-311)
T. Umehara and K. Suzuki   pp. 527-529
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A mechanism of bensulfuron methyl resistance in suspension cultured carrot cells
K. Usui, S. Swangwong, J. Adachi and K. Lshizuda   pp. 530-532
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Further studies on paraquat resistance mechanism in Conyza
G. Varadi, F. Lajko, G. Garab and E. Polos   p. 533
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A stringent assessment of herbicide performance on woody plants may reduce herbicide usage
J.S. Vitelli   p. 534
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Neighbourhood approaches for assessing weed impacts in young forests
R.G. Wagner   pp. 535-539
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The present status and future direction of weed science in Myanmar
L. Wah   pp. 540-553
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Application time of grass selective and non-selective herbicides for seed set control of annual ryegrass Lolium rigidium (Gaud)
A. Wallace and I. Mailing   pp. 554-556
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Comparing methods of selecting effective biocontrol agents for weeds
A.J. Wapshere   pp. 557-560
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Side effects of herbicides on the soil microbial biomass
D.A. Wardle and A. Rahman   pp. 561-564
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Premier - A promising and environmentally friendly herbicide for use in ornamentals
M. Wilcox and J.B. Taylor   pp. 565-567
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Low versus high volume application of imazethapyr to pitted morning glory, Ipomoea lacunosa
G.G. Wills, J.E. Hanks and W. Womble   p. 568
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Global variation in velvetleaf (Abutilon theophrasti)
H. Wood   pp. 569-572
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Role of dynamic surface tension in wetter selection
D. Wood, J. Kibblewhite and R. Watson   pp. 573-576
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Allelopathic cover crops to reduce herbicide inputs in cropping systems
D.A. Worsham and U. Blum   pp. 577-579
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Differential dormancy patterns of soil-buried seeds of Echinochloa crus-galli (Lnn.) Beauv. and E. utilis Ohwi at Yabuno
Y. Yamasue, Y. Matsui and T. Kusanagi   pp. 580-585
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Seedbed weed control and tobacco seedling growth as affected by napropamide and sethoxydim herbicides
F.H. Yelvrerton, A.D. Worsham and R. Jesinger   pp. 586-588
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Effect of crop seedling rates and chemical control of brome grass on crop yeild and brome grass seed output
C.M. Zaicou and G.S. Gill   pp. 589-591
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Geostatistical analysis of the spatial variability of Cyperus esculentus L. and Oxalis spp, in wheat (Triticum spp.) research lots
A.S. Tasistro, J.L. Medina, A. Lopez and F.S. Lopez   p. 592
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