Thiodicarb: A Broad-Spectrum Carbamate Insecticide

Technical Introduction

Thiodicarb (IUPAC: S,S'-dimethyl N,N'-bis(2,2-dichloroethyl) carbamodithioate) is a systemic and contact carbamate insecticide widely used to control chewing and sucking insect pests in various crops. It inhibits acetylcholinesterase (AChE) in insects, disrupting their nervous system and causing paralysis.

• Mode of Action: Carbamate acetylcholinesterase inhibitor (IRAC Group 1A), causing rapid paralysis and death.

• Systemicity: Exhibits translaminar and systemic activity, protecting both treated leaves and new growth.

• Target Spectrum: Effective against leafhoppers, aphids, thrips, caterpillars, planthoppers, and whiteflies.

Applications

• Field Crops:

  • Controls pests on rice, sugarcane, cotton, and maize, particularly sucking pests and leaf-feeding insects.

• Vegetables:

  • Applied on tomatoes, peppers, cucumbers, and eggplants for leafhopper, whitefly, and aphid management.

• Ornamentals & Horticulture:

  • Used in greenhouses and ornamental plants against thrips and caterpillars.

• Integrated Pest Management (IPM):

  • Compatible with beneficial insects due to selective application and systemic action.

Advantages

• Broad-Spectrum Efficacy: Controls both chewing and sucking pests in multiple crops.

• Systemic Protection: Protects new leaves and growth after foliar application.

• Rapid Action: Fast knockdown of target pests, reducing crop damage quickly.

• IPM Compatible: Can be integrated with biological control programs.

• Flexible Formulations: Available in water-dispersible granules, wettable powders, and emulsifiable concentrates.

Specifications (Typical Parameters)

FAQ

Q1: How does Thiodicarb work on pests?
A: It inhibits acetylcholinesterase, causing continuous nerve impulses, paralysis, and death in target insects.

Q2: Is Thiodicarb systemic?
A: Yes. It has translaminar and systemic activity, protecting newly emerging leaves and growth.

Q3: Can it control both sucking and chewing pests?
A: Yes. It is effective against leafhoppers, aphids, thrips, whiteflies, and caterpillars.

Q4: Can Thiodicarb be used in IPM programs?
A: Yes. Its selective action and systemic properties make it compatible with beneficial insects and biological control agents.

Q5: Are there resistance concerns?
A: Resistance can develop with repeated use. Rotate with insecticides of different modes of action to maintain effectiveness.