NUFARM METHOMYL 225 INSECTICIDE
- APVMA no.
- 47336
- Registrant
- NUFARM AUSTRALIA LIMITED
- Formulation
- LIQUID CONCENTRATE
Nufarm Methomyl 225 Insecticide is a liquid concentrate formulation containing 225 g/L methomyl and 472 g/L methanol as active constituents. Classified as an insecticide, it provides rapid knockdown control of key insect pests across horticultural and viticultural crops, including light brown apple moth, codling moth, mealybugs, and thrips.
Methomyl operates predominantly through contact and stomach action, delivering swift activity when insect pressure threatens foliage or crop quality. In integrated pest management programmes across major production districts such as the Goulburn Valley, Sunraysia, and the Riverland, it serves as a targeted intervention when orchard or vineyard monitoring indicates egg hatch or active pest infestations exceeding economic thresholds.
Because of its fast-acting nature, this chemical fits into spray programmes requiring prompt reduction of active insect populations. Growers should utilise pest monitoring data and spray diaries to integrate treatment effectively within broader crop protection schedules.
Active constituents
- METHANOL472 g/L
- METHOMYL225 g/L
Registered uses
Withholding period
WHP: Do not apply later than the number of days shown before harvest: apples beans brassicas, brussel sprouts, lentils nectarines peaches, peas stone fruit sweetcorn capsicums, tomatoes 1 DAY Citrus pears 2 DAYS Strawberries (Fresh) Tobacco 3 DAYS Blueberries 5 DAYS Chickpeas Field Peas Grapes Guar, Linseed lupins mung beans, pigeon peas canola soybeans, sunflowers 7 DAYS Strawberries (For Freezing) 10 DAYS Hops Maize Mint Peanuts poppies, sesame seed sorghum, winter cereals 14 DAYS Do not graze or cut for stockfood earlier than the number of days shown after application: lucerne pastures sweetcorn 3 DAYS Sorghum winter cereals 14 DAYS Do not graze or feed treated crops to animals: Cotton Hops
Withholding periods apply to crops treated with this product, specifying the required delay between application and harvest for fruit, vegetable, and field crops. Additionally, specific grazing and stockfeed withholding periods or complete feeding prohibitions apply where treated crops or pastures are used for animal feed. Refer directly to the approved label attached to the product container to confirm the exact withholding conditions for your specific crop before harvest, grazing, or cutting for stockfood.
Mode of action
Methomyl is a carbamate insecticide classified under IRAC Group 1A. It acts as an acetylcholinesterase (AChE) inhibitor within the central nervous system of susceptible pests. By blocking the AChE enzyme, it leads to a accumulation of acetylcholine at the nerve synapse, resulting in rapid neurotoxicity, continuous nerve firing, paralysis, and pest death upon contact or ingestion.
Resistance management
To delay the development of pest resistance, avoid consecutive applications of Group 1A carbamate insecticides or Group 1B organophosphates on successive generations of target pests. Rotate Nufarm Methomyl 225 Insecticide with registered insecticides from alternative mode-of-action groups. Pest monitoring, egg hatch tracking, and applying treatments only when thresholds are reached are vital for maintaining product efficacy across all registered crops.
Tank-mix compatibility
Compatibility depends on formulation types, spray water quality, and specific tank mix partners. Avoid mixing insecticides or oils with sulphur or copper products, particularly during high ambient temperatures or under slow-drying conditions, as leaf burn or crop injury may occur. Always consult the approved label for detailed compatibility cautions and conduct a small jar test before mixing full spray tanks.
Handling and environment
Nufarm Methomyl 225 Insecticide contains hazardous constituents requiring strict safety precautions during storage, handling, and application. Operators must wear the mandatory personal protective equipment (PPE) outlined on the product label, including chemical-resistant gloves, eye protection, and protective clothing. Take all necessary measures to prevent spray drift onto non-target areas, natural waterways, or flowering plants visited by pollinators. Refer strictly to the approved product label for safety directions, re-entry guidance, and environmental protection statements.
Common questions
- How do I determine the right timing for moth control in pome fruit or viticulture?
- Timing should be guided by field monitoring tools such as pheromone traps, weather degree-day models, and crop scouting. Applying treatments to target egg hatch and newly emerged larvae before caterpillars bore into fruit or shelter inside grape bunches delivers optimal control.
- Why is pest scouting necessary before applying this insecticide?
- Scouting verifies pest identity, density, and life stage. Confirming that target pests are actively present and reaching economic thresholds ensures chemical applications are justified and applied when insects are most susceptible.
- What precautions should be taken when applying near flowering crops?
- Insecticides applied during flowering pose risk to non-target insects and pollinators. Always check the environmental precautions on the registered label for guidance on managing application timing around flowering and bee activity.
- How do I ensure good spray coverage in dense tree or vine canopies?
- Achieving effective coverage requires calibrating equipment to suit canopy density, selecting suitable nozzles, and maintaining appropriate ground speed. Thorough canopy penetration is essential for reaching pests sheltering under leaves or inside fruit clusters.
- How should the registered uses table be used when planning treatments?
- The registered uses table details the specific crop and pest combinations for which the product is authorised. Always verify that your crop and target pest are listed before selecting rates, water volumes, and critical comments from the registered label.
- What steps should be taken prior to tank mixing with other products?
- Check the label for explicit instructions regarding compatible partners, mixing order, and crop safety warnings. Conduct a jar test to verify physical compatibility if mixing partners have not been previously tested together under local conditions.