Ag chemical updateBiosecurity
Hort Innovation has released it’s latest update of chemical reviews and regulatory changes, with a number of changes potentially impacting Australian apple and pear growers.
Chlorpyrifos is currently under review by the Australian Pesticides and Veterinary Medicines Authority (APVMA). It is currently approved for use against a number of pests, including:
- Apple dimpling bug (apples)
- Queensland fruit fly
- Light brown apple moth
- Mealy bugs
- San Jose scale
- Wingless grasshopper
- Woolly aphid
Concerns have been raised about environmental loading, dietary assessments and exposure thresholds of the insecticide, with APAL currently reviewing it’s impact.
Bayer’s new insecticide Vayego 200 SC (Tetraniliprole) is in the final stages of progressing towards being registered.
The insecticide, if registered, is labelled to combat fruit pests including codling moth, light brown apple moth (LBAM), garden weevil, apple weevil and Fuller’s rose weevil.
Corteva is seeking to add pome fruit to the label of proquinazid (Talendo®) for controlling powdery mildew.
The insecticide/miticide Bifenthrin is being phased by the end of the year.
Bifenthrin (eg. Talstar, Starlet) is currently available on label in Australia for use on apples against apple dimpling bug, plague thrips, and on pears against longtailed mealybug (Vic and WA), two spotted mite (Vic and WA), pear looper, longtailed mealybug crawlers, codling moth and LBAM (Vic).
The non-renewal of registration has been proposed for the following:
- Bifenazate (used to treat European red mite, and two spotted mite, Bryobia mite)
- Etoxazole (European red mite, San José scale, two spotted mite)
- Indoxacarb (codling moth and LBAM)
- Budworms (Helicoverpa), codling moth, weevils and others).
It is anticipated that mancozeb (examples of use: powdery mildew, apple scab, bitter rot, fly speck, target spot, sooty blotch) will be deregistered by the end of 2020 with a likely phase out period of 6-12 months.
The Indian Ministry of Agriculture and Family Welfare has issued a draft proposal banning over 20 pesticides.
If this ban goes ahead it will prohibit the import, manufacture, sale, transport, distribution and use of the following pesticides currently on label for use in apple and pear production:
- Dimethoate (eg. Rogor®)
- Methomyl (eg. Lannate L®), oxyfluorfen (eg. Goal®)
- Pendimethalin (eg. Stomp 440®).
Please note that this is not an amendment to MRLs but may inform future amendments to MRLs set by the Food and Safety Authority of India.
New Zealand has tightened up the use of paraquat, including placing some restrictions on the rate that can be applied, droplet size and downwind buffer zones. More information can be found here.
The Thai Ministry of Industry is moving to prohibit the use of chlorpyrifos and paraquat, with the ban to take effect from 1 June 2020.
Attached to this ban is the proposal to drop the MRLs for chlorpyrifos and paraquat to at or below the limit of detection.
If you have any comments or questions regarding the above, please contact Rosalie Daniel, Technical Manager at APAL.