Chemical Class and Bio-Activation Mechanism
Indoxacarb belongs to the oxadiazine family (IRAC Group 22A), functioning as a voltage-dependent sodium channel blocker.
Unique among insecticides, indoxacarb is a pro-insecticide; inside the insect's gut, endogenous enzymes cleave the parent molecule into its more potent active metabolite, N-decarbomethoxylated indoxacarb.
- Bio-Activation: Metabolized within the insect digestive system into a high-affinity neurotoxin
- Immediate Cessation: Feeding ceases within 2 to 4 hours of ingestion, preventing further crop defoliation
- Translaminar Movement: Penetrates leaf tissue to reach young borers sheltered within flower buds and pods
Target Pests and Crop Indications
Indoxacarb is registered for cash crops, vegetables, and pulses facing severe lepidopteran caterpillar pressure.
It is effective against pests that have developed resistance to organophosphates and conventional synthetic pyrethroids.
- Cotton: American bollworm (Helicoverpa armigera) and spotted bollworm
- Pigeon Pea (Tur) and Gram: Pod borer complex (Helicoverpa and Maruca vitrata)
- Tomato and Brinjal: Fruit and shoot borer (Leucinodes orbonalis)
- Cole Crops: Diamondback moth (Plutella xylostella) in cabbage and cauliflower
Application Standards and Resistance Prevention
Apply indoxacarb at the economic threshold level (ETL), specifically targeting early instar larvae (1st to 3rd instar) before they bore deep into pods or fruit.
To prevent resistance buildup, rotate indoxacarb with alternative chemical groups such as diamides or spinosyns.
- Timing: Target newly hatched larvae before they tunnel inside fruit or pods
- Water Volume: Ensure 150 to 200 liters of water per acre for thorough canopy distribution
- Safety Profile: Moderately benign to honeybees and predatory spiders once spray residues have dried completely
Official source
Check the latest rules, benefits and forms here. KisanPe is an independent platform and is not a government website.
Central Insecticides Board & Registration Committee ↗Related on KisanPe
Common questions
What is the mode of action of indoxacarb insecticide?
It blocks voltage-gated sodium channels in insect nerve cells after bio-activation by enzymes in the pest digestive system.
How fast does indoxacarb stop caterpillar feeding?
Pests stop feeding within 2 to 4 hours of ingestion, preventing economic damage even before complete mortality occurs.
Is indoxacarb effective against pod borers in pulses?
Yes, it is widely recommended for managing Helicoverpa pod borers in chickpea, pigeon pea, and other pulse crops.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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