Conference on Adjuvants for Agrochemicals

Chris Bell agrcjb at
Mon Feb 27 18:37:50 EST 1995

Fourth International Symposium on Adjuvants for Agrochemicals

Location  Sheraton Hotel, 13 Spring Street, Melbourne, Victoria, Australia

Dates  3-6 October 1995
You are invited to attend the Fourth International Symposium on Adjuvants
for Agrochemicals to be held in Melbourne this year. This symposium seeks
to build on the achievements of the previous symposia in promoting the
science that underlies the use of adjuvants in agrochemicals. Leaders in
adjuvant science will be presenting keynote and invited papers at this
symposia and will define the future directions of adjuvant research. This
forum will enable the exchange of ideas for those involved in adjuvant
research. Come and develop and maintain communications and contacts in this
rapidly developing field of science.


Each day of the symposium will begin with a keynote address covering a
session theme and be followed by specific invited papers. Contributed
papers and posters will be presented after these papers, and are welcome.

Sessions outlines

Session 1. Formulation development

"Formulation development". Lode Rogiers, ICI Surfactants, Everberg,
Belgium. Discusses new adjuvants formulations; new trends in formulation
developments and physical measurements of adjuvants.

"Trends in formulation types". Doug Wales, ICI Surfactants, Ascot Vale,
Victoria, Australia. Outlines changes in formulation types, particularly
the move toward "dry" products, and how these have changed surfactant and
solvent types.

"Relevant physical measurements for adjuvants". Clarence Hermansky, Du Pont
Experiment Station, Wilmington, Delaware, USA. Outlines methods to measure
equilibrium and dynamic surface tension, viscosity, visco-elasticity etc.
and considers the relevance of these measurements in predicting biological

Session 11. Delivery systems

"How adjuvants can influence the delivery of agrochemicals onto targets".
Frank Hall, Head and Professor, Laboratory for Pest Control Application
Technology (LPCAT), Ohio State University, Wooster, Ohio, USA. Discusses
the influence of adjuvants on mixing and product stability when in
solution; comments on the effect of adjuvants on droplet spectra from
various equipment; judges the relevance of adjuvants in determining whether
the spray is retained or reflected by the target, and summarises known
information on the influence of adjuvants on the form of deposit once
retained by the target.

"Influence of adjuvants on droplet production". Paul Miller, Chemical
Application Group, Silsoe Research Institute, Bedford, England. Considers
the effects of adjuvants on atomisation process, outlines our knowledge of
physical and chemical interactions of adjuvants and atomiser design;
provides guidance on future directions and how best to select adjuvant and
nozzles for prescribed activities. *

"Efficient ways of moving agrochemicals to the target", Bob Mickle,
Atmospheric Environment Science, Environment Canada, Downs-view, Ontario,
Canada. Outlines the influences of adjuvants on droplet and vapour drift,
distribution on and within target areas; assesses relative efficiency of
various application systems and how adjuvants interact with each.

"Role of adjuvants in product retention and form of deposit on targets".
Speaker to be selected. Assesses the interaction of the physical properties
of the spray and granule and target surface and how they influence
retention or reflection. Identifies guidelines to maximise retention and/or
placement on targets; assesses the influence of form of deposit size and
shape and whether crystalline, etc. for a range of conditions; specifically
addresses influences of such environmental factors as rain and dew.
Session 111. Uptake and efficacy

"Adjuvants for agrochemicals - Why do we need to know precisely how they
work?". Peter Holloway, Bristol University, Long Ashton Research Station,
Bristol, England. Considers classification of adjuvants according to mode
of action and physicochemical properties; assesses the influence of
physicochemical properties on mode of action and enhancement of biological
activity for predicting performance.

"Effect of surfactants on deposit formation and leaf surface interactions
and application volume". John Bukovac, Professor of Horticulture, Michigan
State University, East Lansing, Michigan, USA. Considers how surfactants
alter spray deposit form; outlines the interaction of adjuvants with leaf
waxes and other structures; comments on changes in deposit form with
carrier volume .

"Behaviour, applicability and efficacy of non-surfactant adjuvants". John
Nalewaja, North Dakota State University, Fargo, North Dakota, USA. Compares
pros and cons of adjuvants other than surfactants and identifies their
applications and efficacy; discusses these in relation to plant/organism
characteristics; surveys types most frequently used or most efficacious in
the field; rationalises or identifies mechanism if possible; contrasts
these with surfactant adjuvant efficacy and identifies potential strengths
or weakness.

"Adjuvant and spray formulation phytotoxicity". Robyn Gaskin, Forest
Research Institute, Rotorua, New Zealand. Defines meaning of phytotoxicity
and methods used to measure it; outlines effects of adjuvants alone or in
combination with agrochemicals or other adjuvants including surfactant
antagonism; questions implications of surfactant residues in the
environment and potential and real phytotoxicity effects.

Session IV. Use

"Registration requirements for adjuvants". Mark Lynch, Pesticide Control
Service, Abbotstown, Castleknode, Dublin, Ireland. Details the difference
in registration requirements for adjuvants in major use areas: relates the
effect of registration on product use and marketing strategies: assesses
user and public perception of adjuvants; predicts changes in adjuvant use
pattern and marketing strategies.

"A pesticide manufacturer's perspective on specifying tank-mix adjuvants".
Jerry Green, Du Pont, Stine-Haskell Research Centre, Newark, Delaware, USA.
Provides a global focus on the processes and requirements for specifying
adjuvants for use with pesticides. Discusses how decisions are reached in
recommending adjuvant tank mixes and methodologies used in assessing their

"The role of adjuvants in controlling insects". Martyn Ford, School of
Biological Sciences, University of Portsmouth, Hampshire, England. Assesses
the value of adjuvants in pest control in both developed and developing
nations; considers the problems associated with their use.

"Are adjuvants worthwhile?". Harry Combellack, Keith Turnbull Research
Institute, Frankston, Victoria, Australia. Appraises user attitudes to
adjuvant use and how they select products; assesses the credibility of
adjuvant claims.

Information on registration and submission of papers is available from
Fiona Richardson, FISAA Symposium, PO Box 1108, FRANKSTON 3199, Australia.
Tel 03 785 0137         Fax: 03 785 2007
 e.mail  Bob Richardson ror at

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