Spur-throated locust: insecticide spraying guide

Page last updated: Tuesday, 2 May 2017 - 7:31am

Please note: This content may be out of date and is currently under review.

This page provides information on chemical control for the spur-throated locust in Western Australia.

Chemicals registered or permitted in Western Australia

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.

Notes:

  • Emulsifiable concentrate (EC), ultra low volume (ULV), suspension concentrate (SC).
  • Withholding period (WHP): number of days are given for: Harvest withholding period (H) and export withholding periods (Export Slaughter Interval (ESI), Export Grazing Interval (EGI) and Export Animal Feed Interval (EAFI). For grazing WHP’s refer to chemical label.
  • 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 ESI on clean feed is met. Or the EGI on treated crops/pasture.
  • 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.
Adult spur-throated locust.
Adult spur-throated locust.

The pesticides listed below can be used on any crop, appearing on the chemical label, as long as the rate used does not exceed the highest rate that is registered for use on that crop. Read chemical label before application.

Insecticide: carbaryl

Chemical 
formulation 
and 
concentration

Trade name

Pastures 
(mL/ha)

Cereals 
(mL/ha)

Canola, 
lupin

or 
pulse

crops 
(mL/ha)

Forestry

or 
non-crop 
areas 
(mL/ha)

Harvest

and

export WHP 
(days)

SC

500g/L

Bugmaster, Carbaryl

1200-1400

H: 3 
EAFI: 7
ESI: 7
EGI: 7

Insecticide: chlorpyrifos

Chemical 
formulation 
and 
concentration

Trade name

Pastures 
(mL/ha)

Cereals 
(mL/ha)

Canola, 
lupin

or 
pulse

crops 
(mL/ha)

Forestry

or 
non-crop 
areas 
(mL/ha)

Harvest

and

export WHP 
(days)

SC

500g/L

Chlorpyrifos, Cyren, 
Lorsban, Strike-out

1250 or 1500

1250 or 1500

ESI: 56 
EGI: 56

Insecticide: diazinon

Chemical 
formulation 
and 
concentration

Trade name

Pastures 
(mL/ha)

Cereals 
(mL/ha)

Canola, 
lupin

or 
pulse

crops 
(mL/ha)

Forestry

or 
non-crop 
areas 
(mL/ha)

Harvest

and

export WHP 
(days)

EC

800g/L

Diazinon, Diazol

700-850

700-850

700-850

H: 14
EAFI: 14
ESI: 14
EGI: 28

Insecticide: fenitrothion

Chemical
formulation
and
concentration

Trade name

Pastures
(mL/ha)

Cereals
(mL/ha)

Canola,
lupin

or
pulse

crops 
(mL/ha)

Forestry

or
non-crop
areas
(mL/ha)

Harvest

and

export WHP
(days)

EC/ULV

1000g/L

Fenitronthion

270–550

270–550

H: 14
EAFI: 14
ESI: 14
EGI: 14

Insecticide: fipronil

Chemical 
formulation 
and 
concentration

Trade name

Pastures 
(mL/ha)

Cereals 
(mL/ha)

Canola, 
lupin

or 
pulse

crops 
(mL/ha)

Forestry

or 
non-crop 
areas 
(mL/ha)

Harvest

and

export WHP 
(days)

SC

200g/L

Regent 200SC

6.25

6.25-12.5

H: 14
EAFI: 14
ESI: 14
EGI: 21

ULV

3g/L

Adonis 3UL (restricted 
use)

420

H: 14
EAFI: 14
ESI: 14
EGI: 21

Insecticide: maldison

Chemical 
formulation 
and 
concentration

Trade name

Pastures 
(mL/ha)

Cereals 
(mL/ha)

Canola, 
lupin

or 
pulse

crops 
(mL/ha)

Forestry

or 
non-crop 
areas 
(mL/ha)

Harvest

and

export WHP 
(days)

EW

440g/L

Fyfanon 440 EW 2500 2500 2500 H:3

EC

500g/L

Fyfanon 500 EC

2200

2200

2200

H: 3

EC

100g/L

Fyfanon 1000 EC

850

850

850

H: 3

Biological control: naturally occurring Australian fungus Metarhizium anisopliae var. acridum

Chemical 
formulation 
and 
concentration

Trade name

Pastures 
(mL/ha)

Cereals 
(mL/ha)

Canola, 
lupin

or 
pulse

crops 
(mL/ha)

Forestry

or 
non-crop 
areas 
(mL/ha)

Harvest

and

export WHP 
(days)

SC

150g/

1.8kg

Green Guard SC

500mL/

75-225L

water

Should not be tank mixed with any other pesticide

500mL/

75-225L

water

Should not be tank mixed with any other pesticide

500mL/

75-225L

water

Should not be tank mixed with any other pesticide

500mL/

75-225L

water 

Should not be tank mixed with any other pesticide

ULV

300g/L

Green Guard ULV

250

250

250

250

Please note: 
 
If a pesticide is registered for use in Western Australia on a crop for the control of a pest, an agricultural user may use the pesticide on that crop for the control of any pest. 
 
Below are the rates that have efficacy on spur throated locusts. Check that the rates are below those registered for use on crops on which control is required.

Chemical

Chemical registered rate (mL/ha)

Carbaryl

1200-1400

Chlorpyrifos

1250 or 1500

Diazinon

700-850

Fenitrothion

270-550

Fipronil

6.25

Maldison

850 or 2200 or 2500 check formulation

Metarhizium SC (Green Guard)

500mL in 75-225L

Metarhizium ULV (Green Guard)

250

For further information, please contact the Department of Agriculture and Food, Western Australia's Pest and Disease Information Service, at the contact details below.

Contact information

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