Spur throated locust spraying issues: horticulture

Page last updated: Tuesday, 13 July 2021 - 12:08pm

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The following article provides information on spur-throated locust control for some horticultural crops in Western Australia.

Introduction

Horticultural enterprises that are most susceptible to hopper attack include cultivated turf, including playing fields, parklands and golf courses, and vegetable crops.

Other horticultural enterprises are mainly susceptible to adult locusts rather than hoppers. However, horticultural enterprises such as cut flowers, nurseries, grape vines and fruit trees should be monitored for damage.

Due to the high value of horticultural crops, landowners will have to act immediately if locusts arrive.

Control in horticultural crops should be initiated as soon as any hopper damage becomes evident. The cost of control is almost certain to be less than the cost of even minor locust damage.

Comply with withholding periods for any insecticides sprayed on crops.

Landholders are responsible for the control of locust infestations that are causing damage on their own properties.

Locust control for horticultural crops

Information in the following table is provided as a guide to insecticides for use against grasshoppers and or locusts and must be used in conjunction with product labels and permits to ensure they are registered for use on specific types of produce.

Read chemical label before application.

  • 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.
  • There are many products with different trade names that contain the same active ingredient.
  • Always read the label and follow the directions for use, including the method of application and any withholding period.
  • 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.
  • Any omissions or errors in the table are regretted.

Withholding periods

Check the insecticide label before using chemicals to ensure that the minimum withholding periods before harvest are observed.

Spur throated locust control for some horticultural crops in Western Australia
Crop Chemical Rate

Withholding 
period (days)

Comments

Beans

diazinon 800g/L

700mL/ha

14

N/A
Beans

Metarhizium anisopliae

250mL/ha

N/A

N/A

Beetroot

diazinon 800g/L

700mL/ha

7

N/A

Brassicas

fipronil 200g/L

6.25mL/ha

7

N/A

Brassicas

diazinon 800g/L

700mL/ha

14

N/A

Brassicas

fenitrothion 1000g/L

270-550mL/ha

14

cabbages only

Capsicum

diazinon 800g/L

700-850mL/ha

14

N/A

Carrots

diazinon 800g/L

700-850mL/ha

14

N/A

Citrus

carbaryl 500g/L

200mL/100L water

3

N/A

Citrus

Metarhizium anisopliae

250mL/ha

N/A

N/A

Cucurbits

diazinon 800g/L

700-850mL/ha

14

N/A

Eggplant

diazinon 800g/L

700-850mL/ha

14

N/A

Feijoa, guava

Metarhizium anisopliae

250mL/ha

N/A

N/A

Garlic

diazinon 800g/L

700mL/ha

14

N/A

Grapevines

fenitrothion 1000g/L

270-550mL/ha

14

N/A

Grapevines

Metarhizium anisopliae

250mL/ha

N/A

N/A

Lettuce

diazinon 800g/L

700-850mL/ha

3

N/A

Lettuce

fenitrothion 1000g/L

270-550mL/ha

14

N/A

Macadamia

Metarhizium anisopliae

250mL/ha

N/A

N/A

Mango

Metarhizium anisopliae

250mL/ha

N/A

N/A

Onions

diazinon 800g/L

700-850mL/ha

14

Not leeks

Pome fruit

diazinon 800g/L

65mL/100L

14

N/A

Pome fruit

fenitrothion 1000g/L

270-550mL/ha

14

Apples only

Pome fruit

Metarhizium anisopliae

250mL/ha

N/A

N/A

Potatoes

diazinon 800g/L

700-850mL/ha

14

N/A

Potatoes

fipronil 200g/L

N/A

 

N/A

Stone fruit

fenitrothion 1000g/L

270-550mL/ha

14

Cherries only

Stone fruit

Metarhizium anisopliae

250mL/ha

N/A

N/A

Tomatoes

fenitrothion 1000g/L

270-550mL/ha

14

Tomatoes

diazinon 800g/L

700-850mL/ha

14

Turnips

fipronil 200g/L

6.25mL/ha

7

Vegetables (general)

diazinon 800g/L

700-850mL/ha

14

Sundry vegetables only

Vegetables (general)

Metarhizium anisopliae

250mL/ha

N/A

N/A

N/A= not applicable  ULV = ultra low volume

Contact information

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

Spur throated locust spraying issues: horticulture