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PLANT PROTECTION 1 – Pests, Diseases and Weeds

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<strong>PLANT</strong> <strong>PROTECTION</strong> 1 – <strong>Pests</strong>, <strong>Diseases</strong> <strong>and</strong> <strong>Weeds</strong><br />

EXAMPLES OF WEED SITUATIONS<br />

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Adjuvants (spray additives)<br />

An adjuvant is broadly defined by the APVMA as ‘any substance (other than water) that is added to an<br />

agricultural chemical product to alter its physico-chemical properties <strong>and</strong>/or improve its efficacy’.<br />

They are added to pesticides prior to application mainly to improve their effectiveness, eg spreaders <strong>and</strong> stickers<br />

to improve spray coverage, <strong>and</strong>/or plant safety, eg compatibility or to reduce drift.<br />

Most spray additives are of low hazard but some may damage the environment, eg fish; others may damage<br />

crops under some conditions.<br />

Always check sequence of sprays <strong>and</strong> their compatibility with pesticide(s) being applied.<br />

Many are for use with particular products only, eg Nufarm Bonus (alkyl ethoxy phosphate trolamine salt) for<br />

use with Nufarm Credit Broadacre herbicide; Trilogy (octyl phenol ethoxylate) to enhance glyphosate<br />

performance on grasses in cold environments; Hydrogel spray additive for diquat which causes the mix to<br />

submerge <strong>and</strong> attach to the target submerged aquatic weeds.<br />

Guides available online include Underst<strong>and</strong>ing Spray Oils <strong>and</strong> Adjuvants, Herbicide Adjuvant Guides.<br />

Companies may specialize in adjuvants, eg SACOA www.sacoa.com.au/, SST Australia www.sstaustralia.com<br />

Adjuvants are listed under product type on PubCris on the APVMA website www.apvma.gov.au/<br />

Table 74. Adjuvants, spray additives. - some examples.<br />

TYPE<br />

GENERAL SPREADERS<br />

AND STICKERS<br />

Petroleum oils<br />

Paraffinic oils<br />

Botanical oils,<br />

vegetable oils<br />

STICKING AGENTS<br />

ANTI-DRIFT AGENTS<br />

ANTI-EVAPORANTS<br />

BUFFERING AGENTS<br />

SPREADING AGENTS<br />

CLEANING AGENTS<br />

COMPATIBILITY<br />

DEFOAMERS<br />

PENETRANTS<br />

SYNERGISTS<br />

THE PRODUCT<br />

Trade name<br />

Active constituent<br />

AGRAL spray surfactant, VARIOUS<br />

nonylphenol ethylene oxide non-ionic<br />

organic surfactant<br />

WETTER TX<br />

octyl phenol ethoxylate<br />

SACOA WETTA 1000<br />

non-ionic ethoxylates<br />

D-C-TRATE, TRYCOL, VARIOUS<br />

petroleum oil<br />

TALISMAN, TRIBUTE,<br />

SOME USES<br />

Read label, obtain advice from company<br />

For use with horticultural insecticides, fungicides <strong>and</strong><br />

herbicides<br />

A special purpose non-ionic surfactant for use with the<br />

Roundup family of herbicides.<br />

For use as a bio-degradable wetting <strong>and</strong> spreading agent. A<br />

spray for use with knockdown <strong>and</strong> residual herbicides.<br />

Used on a range of crops with insecticides <strong>and</strong> herbicides.<br />

To enhance the performance of certain herbicides.<br />

petroleum oil/non-ionic polyethylated surfactants<br />

BIOPEST<br />

May be used with certain fungicides, insecticides,<br />

paraffinic oils<br />

herbicides to improve wetting <strong>and</strong> penetration.<br />

SYNERTROL OILS<br />

botanical oils/vegetable oils<br />

CODACIDE<br />

rape seed oil (canola)<br />

SPRAYFAST<br />

di-1-p-menthane<br />

DRIFTEX, VARIOUS<br />

refined canola oil<br />

ANTIEVAP, RULVAPRON<br />

petroleum oil<br />

SPRAYBUFF, PROBUFF<br />

soyal phospholipids acid/propionic acid<br />

HYGRO-STIC STICKER SPREADER<br />

di-1-p-menthene<br />

KOMPLETE KLEEN<br />

4% available chlorine<br />

TANK & EQUIPMENT CLEANER<br />

sodium triolyphosate + detergents<br />

STEADFAST<br />

alkylaryl polyoxyethylene glycol phosphate ester<br />

FLOWRIGHT COMPATIBILITY AGENT<br />

blend of fatty acid triglycerides<br />

ACTIVATOR<br />

non-ionic surfactants<br />

PULSE, BREAK-THRU GOLD PENETRANT<br />

polyether modified polysiloxane<br />

LIASE, VARIOUS<br />

ammonium sulphate<br />

For addition to most agrochemical, horticultural, foliar<br />

fertilizer <strong>and</strong> micro-nutrient sprays to increase chemical<br />

wetting, spread, penetration <strong>and</strong> rainfastness <strong>and</strong> to reduce<br />

spray drift <strong>and</strong> leaching of soil chemicals.<br />

Can maximize the performance of many plant protection<br />

products; enhances the activity of some insecticides.<br />

For use as a tank mix with some agricultural chemicals to<br />

improve their performance, ie penetration, wetting <strong>and</strong><br />

adhesion, can also be used as an anti-transpirant.<br />

For addition to turf pesticides sprays to reduce spray drift <strong>and</strong><br />

improve rainfastness. An adjuvant added to a spray mixture to<br />

reduce drift.<br />

Anti-evaporant <strong>and</strong> winter spray oil. Used<br />

with insecticides, fungicides, herbicides.<br />

Acidifying <strong>and</strong> penetrating surfactant, reduces alkaline<br />

hydrolysis of dimethoate, assists with uptake of foliar fertilizers,<br />

assist in management of spray droplet size.<br />

Used as a sticker/spreader for agricultural chemicals.<br />

Multipurpose cleaning concentrate for spray equipment.<br />

For cleaning spraying equipment, for decontamination<br />

when changing from one agricultural chemical group to<br />

another, for end of season cleaning before storage.<br />

A compatibility, acidifying <strong>and</strong> surfactant agent .<br />

Used when tank mixing certain herbicides.<br />

Rainfast wetting agent with low foaming qualities, reduces<br />

drift by producing a thick foam. Used to reduce foaming of a<br />

spray mixture due to agitation.<br />

Spray additive for improved penetration of glyphosate <strong>and</strong>/or<br />

metsulfuron methyl herbicides when treating certain brush<br />

<strong>and</strong> woody weeds, eg bracken.<br />

For use with glyphosate-based herbicides to minimize<br />

antagonism when tank mixing with flowable herbicides <strong>and</strong><br />

improve performance under adverse environmental conditions.<br />

<strong>Weeds</strong> - Examples of weed situations 455

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