Australian plague locust control: registered insecticides

Page last updated: Thursday, 30 January 2025 - 7:54am

Please note: This content may be out of date and is currently under review.

This article provides information on chemicals registered for the control of the Australian plague locust in Western Australia.

Overview

  • There are many products with different trade names that contain the same active ingredient. This list is not exhaustive and does not imply any specific recommendations of brand names.
  • EC – emulsifiable concentrate, ULV – ultra low volume, CS – capsule suspension, SC – suspension concentrate.
  • Withholding period (WHP) - number of days are given for: (H) - harvest withholding period. For grazing WHPs refer to chemical label and export withholding period (ESI, EGI, EAFI) intervals are listed below in days.
  • Avoid overspraying stock. Refer to labels for withholding grazing periods for domestic markets. For animals destined for export: if overspraying does occur, withhold stock for slaughter until the export slaughter interval (ESI) on clean feed is met. Or the export grazing interval (EGI) on treated crops/pasture. EAFI (export animal feeding interval) is the minimum period that must elapse between application and grazing or harvesting of crop or pasture for feed. It is the least preferred interval option as there is considerable variability in decline of residues in mature pastures.
  • Many products are dangerous to fish and crustaceans. Do not contaminate ponds, rivers or waterways and do not spray flowering crops when bees are foraging.
  • Use of permitted chemicals is restricted to crops for which there are current registrations for other pests. Rates of application must not exceed the label rate for each crop.

Insecticides

Read chemical label before application.

Alpha-cypermethrin*

Chemical formulation and concentration Trade name Pastures (mL/ha) Cereals (mL/ha) Canola or lupin or pulse crops (mL/ha) Forestry or non-crop areas (mL/ha) Harvest and grazing withholding period (days)
EC 100g/L

various

160 160 160-200 300

H:7-28
ESI: 42
EGI: 56

ULV 16g/L

various

1000 1000

1000-1250

1250-2500

H: 21-28
ESI: 42
EGI: 56

SC 250g/L

various 64 64-80 64-80 -

H: 7-28
ESI: 42
EGI: 56

Carbaryl

Chemical formulation and concentration Trade name Pastures (mL/ha) Cereals (mL/ha) Canola or lupin or pulse crops (mL/ha) Forestry or non-crop areas (mL/ha) Harvest and grazing withholding period (days)
SC 500g/L Bugmaster, Carbaryl 1200-1400 1200-1400 - -

H: 3
EAFI: 7 
ESI: 7 
EGI: 7

Cypermethrin*

Chemical formulation and concentration Trade name Pastures (mL/ha) Cereals (mL/ha) Canola or lupin or pulse crops (mL/ha) Forestry or non-crop areas (mL/ha) Harvest and grazing withholding period (days)
EC 200g/L

various

- 170 160–200 -

H: 7-28
ESI: 63

EC 250g/L Apache, Cyrux, Boom Plus, Cypermethrin, Selene - 135 160–200 -

H:7-28
ESI: 63

EC 260g/L Cypermethrin 260 - 130 120–200 -

H:7-28
ESI: 63

ULV 40g/L Cypershield - - 1000–1250 -

H:7-28
ESI: 63

Fenitrothion

Chemical formulation and concentration Trade name Pastures (mL/ha) Cereals (mL/ha) Canola or lupin or pulse crops (mL/ha) Forestry or non-crop areas (mL/ha) Harvest and grazing withholding period (days)
EC 1000g/L Fenitronthion, Sumithion 270–400 270–400 - -

H:14
EAFI: 14 
ESI: 14 
EGI: 14

ULV 1.23kg/L Sumithion 200–400 200–400 - - H:14
EAFI: 14 
ESI: 14 
EGI: 14

Fipronil*

Chemical formulation and concentration Trade name Pastures (mL/ha) Cereals (mL/ha) Canola or lupin or pulse crops (mL/ha) Forestry or non-crop areas (mL/ha) Harvest and grazing withholding period (days)
SC 200g/L various 6.25 - - 6.25 H:14 
EAFI: 14 
ESI: 14 
EGI: 21
ULV 3g/L Adonis  420 - - - H:14
EAFI: 14 
ESI: 14 
EGI: 21
ULV 8.5g/L Adonis  150 - - - H: 14
EAFI: 14 
ESI: 14 
EGI: 21

Gamma cyhalothrin*

Chemical formulation and concentration Trade name Pastures (mL/ha) Cereals (mL/ha) Canola or lupin or pulse crops (mL/ha) Forestry or non-crop areas (mL/ha) Harvest and grazing withholding period (days)
EC 150g/L Trojan 20-30 20-30 20-30 -

H: 7-14
ESI: 42 
EGI: 56

Lamda-cyhalothrin*

Chemical formulation and concentration Trade name Pastures (mL/ha) Cereals (mL/ha) Canola or lupin or pulse crops (mL/ha) Forestry or non-crop areas (mL/ha) Harvest and grazing withholding period (days)
CS 250g/L various 24-36 24-36 24-36 -

H: 7-14
ESI: 42 
EGI: 56

Malathion

Chemical formulation and concentration Trade name Pastures (mL/ha) Cereals (mL/ha) Canola or lupin or pulse crops (mL/ha) Forestry or non-crop areas (mL/ha) Harvest and grazing withholding period (days)
EC 1000g/L Fyfanon 600-1100 600-1100 - 600-1100 H: 1
EW 440g/L Fyfanon 1400 or 2500 1400 or 2500 - 1400-2500 H: 1
ULV 1169g/L Fyfanon ULV 700 - - - H: 1

Biological control

Naturally occurring Australian fungus

Metarhizium anisopliae var. acridum

Chemical formulation and concentration Trade name Pastures (mL/ha) Cereals (mL/ha) Canola or lupin or pulse crops (mL/ha) Forestry or non-crop areas (mL/ha) Harvest and grazing withholding period (days)
SC Green Guard SC 500mL in 75-225L water per hectare*** 500mL in 75-225L water per hectare*** 500mL in 75-225L water per hectare*** 500mL in 75-225L water per hectare*** Nil
ULV 300g/L Green Guard ULV 40-250 40-250 40-250 40-250 Nil

Table footnotes

* Subject to APVMA permits 10927, 10928, 94973 expiring 30 June 2025. Use of these chemicals will be restricted to crops for which there are current registrations for other pests. Rates of application must not exceed the label rate for each crop.

** Incompatible in tank mixes with 2, 4-D Esters, 2, 4-D Amines, MCPA Ester, Dicamba.

*** Should not be tank mixed with any other pesticide

Contact information

Pest and Disease Information Service (PaDIS)
+61 (0)8 9368 3080