INSECTICIDE

Delegate Jemvelva active Insecticide

APVMA no.: 61717
Registrant: CORTEVA AGRISCIENCE AUSTRALIA PTY LTD
Formulation: WATER DISPERSIBLE GRANULE

Delegate Jemvelva active Insecticide is a water-dispersible granule formulation containing 250 g/kg spinetoram, a second-generation spinosyn insecticide. It is registered for the control of key chewing and sucking pests, including light brown apple moth, codling moth, and thrips. The product is widely utilised across key Australian horticultural regions, such as pome fruit blocks in the Goulburn Valley and Batlow, citrus groves in Sunraysia and the Riverland, and major grape-growing districts.

This selective insecticide fits neatly into integrated pest management (IPM) programmes across tree fruit and viticulture blocks. Spinetoram works through both contact and ingestion, targeting active insect stages while demonstrating lower impact on many key beneficial predators and parasitoids when used according to label instructions.

Application timing should be targeted to egg hatch or early larval emergence based on local pest monitoring and orchard trap counts. Consult your spray diary and review the approved product label to determine precise timing, canopy coverage requirements, and crop-specific guidance.

Active constituents

SPINETORAM250 g/kg

Registered uses

Crop	Pest or disease
Grape	Light brown apple moth
Lemon	Light brown apple moth
Lime	Light brown apple moth
Orange	Light brown apple moth
Pear	Codling moth
Pear	Light brown apple moth
Pear	Thrips

Withholding period

WITHHOLDING PERIODS:
Almond: DO NOT APPLY WITHIN 7 DAYS OF HARVEST OR NUT FALL.
Citrus Fruit: DO NOT HARVEST FOR 1 DAY AFTER THE LAST APPLICATION
Grapes and Pome Fruit: DO NOT HARVEST FOR 7 DAYS AFTER THE LAST APPLICATION.
Stone Fruit: DO NOT HARVEST FOR 3 DAYS AFTER THE LAST APPLICATION.
DO NOT GRAZE ANY TREATED ORCHARD OR VINEYARD OR CUT THE ORCHARD OR VINEYARD FLOOR FOR STOCKFOOD.
The grazing limitations above apply specifically to stock slaughtered for the domestic
market. Export markets may apply different standards. To ensure compliance with residue
standards in export markets, comply with the above grazing withholding periods and ensure
that the Export Slaughter Interval (ESI) is observed before stock are sold or slaughtered.
Export Slaughter Interval: 14 Days. This means that livestock that have grazed on or were
fed treated crops or byproducts should be placed on clean feed for at least 14 days prior to
slaughter.

The registered withholding periods dictate the required duration between the final spray application and harvest: 1 day for citrus fruit; 3 days for stone fruit; and 7 days for almonds, grapes, and pome fruit. Do not graze treated orchards or vineyards, and do not cut the floor vegetation for stockfood. For stock intended for slaughter, observe the domestic grazing prohibition as well as the 14-day Export Slaughter Interval (ESI) to ensure compliance with export market residue limits.

Mode of action

Spinetoram belongs to the Group 5 insecticide mode of action class (spinosyns). It operates by binding allosterically to nicotinic acetylcholine receptors (nAChR) within the insect nervous system. This causes persistent involuntary muscle contractions, tremors, and ultimate paralysis. Insects absorb the active constituent upon contact or by ingesting treated leaves and fruit.

Resistance management

To delay the development of pest resistance to Group 5 insecticides, rotate Delegate Jemvelva active Insecticide with registered insecticides from distinct chemical groups. Avoid treating consecutive generations of target pests, such as light brown apple moth or codling moth, with Group 5 chemistry alone. Adhere to seasonal application limits specified on the registered label and integrate cultural management practices within your orchard or vineyard management strategy.

Tank-mix compatibility

Compatibility depends on tank partners, formulation types, water quality, and spray volume. Exercise caution when tank-mixing insecticides with foliage oils, copper fungicides, or wetters under high temperatures or water-stress conditions, as foliar or fruit marking may occur. Always perform a physical jar test before broad-scale mixing and follow the specific tank-mix instructions on the approved label.

Handling and environment

Handle this product using the personal protective equipment (PPE) outlined in the safety directions on the label. Take necessary precautions to minimise spray drift into non-target aquatic environments, native vegetation, and areas where bees or other pollinators are actively foraging. Do not apply directly to livestock or allow spray to drift onto adjacent pastures. Refer to the approved label for full safety directions, re-entry statements, and environmental cautions.

Common questions

How does spinetoram differ from earlier spinosad formulations?: Spinetoram is a chemically modified spinosyn designed to offer higher intrinsic activity, broader target pest efficacy, and greater stability on foliage compared to first-generation spinosad, while maintaining a favourable profile toward many beneficial species.
What is the recommended approach for managing pest resistance in key crops?: Implement a windowed spray strategy where Group 5 insecticides are applied to a single generation of the target pest, followed by alternating to alternative mode-of-action groups (such as Group 6, 15, or 28) for subsequent generations during the season.
Can Delegate Jemvelva active Insecticide be applied during crop bloom?: Care must be taken to protect foraging pollinators during flowering. Check the specific environmental and bee safety statements on the approved APVMA label for timing restrictions relative to bloom and pollinator activity.
How do domestic withholding periods align with international export standards?: Label withholding periods ensure compliance with Australian Maximum Residue Limits (MRLs). International export markets may enforce different residue thresholds; consult your winery, exporter, or peak industry body prior to late-season applications on export-bound crop blocks.
What level of canopy spray coverage is needed for reliable control?: Because spinetoram acts via both ingestion and contact, thorough and uniform canopy coverage is essential. Ensure spray equipment is calibrated to penetrate the tree or vine canopy, delivering droplets directly into target fruit clusters and leaf-rolling sites.