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NC Pest CorMan ch5

Pesticide Formulations

TermDefinition
A aerosol
B Bait
C Concentrate
D Dust
DF Dry Flowbles
E or EC Emulsifiable Concentrate
F or L Flowable or Liquid
G Granule
GL Gel
M Microencapsulated
P Pellets
RTU Ready to Use
S Solution
SG Soluble Granule
ULV Ultra Low Volume
W or WP Wettable Powder
WDG or DG Water-dispersible Granules
WSP Water-soluble powder or packet
Emulsifiable Concetrates Advantages 1. Easy to handle, transport and store 2. Little agitation required - will not settle out 3. Not Abrasive 4. Will not plug screens or nozzles 5. Little visible residue on treated surfaces
Emulsifiable Concetrates Disadvantages 1. High concentration of active ingredients makes it easy to overdose or underdose through mixing or calibration 2. May cause damage to desirable plants (phytotoxicity)
Emulsifiable Concetrates Disadvantages 3. Solvents may cause rubber/ plastic hoses, gaskets, pump parts and surfaces to deteriorate 4. May cause pitting or discoloration of painted finishes
Emulsifiable Concetrates contains liquid active ingredient, one or more petroleum solvents and an agent (emulsifier) that allows the formulation to be mixed with water to form an emulsion
Solution (S) is formed when the pesticide is mixed with the liquid solvent (carrier). Once mixed, a true Solution does not require agitation to keep parts from settleling
Ready - to - Use Low - Concetrate solutions (RTU) Low-concentrate formulations are ready to use and require no further dilution before application: often consist of 1% or less per unit volume
RTU Advantages 1. Usually do not stain fabrics or have unpleasant odors 2. Useful for structural pests and household use
RTU Disadvantages 1. High Cost per unit of active ingredient 2. Many organic solvents are harmful to leaves
Ultra - Low Volume (ULV) designed to be used AS IS or diluted with only small quantities of a carrier ; no more than 1/2 gallon per acre
ULV Advantages 1. Relatively easy to handle, transport and store 2. Little agitation required 3. Not abrasive to equipment 4. Will not plug screens or nozzles 5. Little visible residue on treated surfaces
ULV Disadvantages 1. Difficult to keep pesticide on target; high drift hazard 2. Specialized equip. required 3. Easily absorbed through skin
ULV Disadvantages 4. Solvents may cause rubber/ plastic hoses, gaskets, pump parts and surfaces to deteriorate 5. Calibration and application must be done carefully due to high concentration
Invert Emulsion water soluble pesticide dispersed in an oil carrier Example: right of way
Flowables (F)/Liquids (L) when active ingredient is INSOLUBLE in water and oil; ingredient is finely ground and mixed with liquid to form a suspension
F Advantages 1. Seldom clog nozzles 2. Easy to handle and apply
F Disadvantages 1. Requires moderate agitation
A Advantages 1. Ready to use 2. Portable 3. Easily stored 4.Convenient way to buy small amount of pesticide 5.Retain potency over fairly long time
A Disadvantages 1. Practical for only very limited uses 2. Risk of inhalation injury 3. Hazardous if punctured or around fire 4. Difficult to confine to target site or pest
Physical Incompatibility Occurs when the products do not stay uniformly mixed in the spray tank; may form putty or past or cottage cheese looking mixture
Chemical Incompatibility Occurs when mixing certain pesticides alters activity of one or more of them; chemical reaction takes place
Compatibile Pesticides mixed and applied WITHOUT 1. Changing the effectiveness 2. Changing the characteristics of any of the pesticides 3. Causing undesirable damage to the application site
Jar Test Order of Mix 1. Dry formulations - (WP), (DF), (WDG) 2. Liquids - (F), (L), (ME), (S), (SP) 3. Surfactants/Adjuvants 4. Emulsion products - (EC)
Jar Test Time for mixture to stand 15 min. or longer
Created by: rpickler1
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