Fastac EC Insecticide

Fastac EC Insecticide

Fastac® EC Insecticide gives growers an effective new tool with excellent knockdown, residual and repellent action. It works on a broad spectrum of piercing-sucking and chewing insect pests, including aphids, beetles and stink bugs. It’s also very cost-efficient because it tank-mixes* with fungicides like Priaxor® fungicide. Field trials show that, when used as part of a comprehensive pest management program, Fastac instecticide can help maximize yield potential.

How Fastac EC Works

By acting on the nervous system of insects, the active in gradient in Fastac insecticide, alpha-cypermethrin, sustains succession of the nerve impulses which leads to over stimulation, exhaustion and death of the insect. Fastac insecticide will control a broad-spectrum of crop damaging pests, including aphids, beetles, armyworms and stink bugs. Fastac insecticide also boasts a low-dose rate and broad-crop label, which includes soybeans and cotton.

*DO NOT tank mix this product with any product containing the active ingredients cypermethrin or zeta-cypermethrin. Fastac EC may be applied in tank mixtures with other products approved for use on alfalfa, Brassica vegetables, corn, cotton, fruiting vegetables, leafy vegetables, legume vegetables, rice, root and tuber vegetables, sorghum, soybeans, tree nuts and wheat. Observe all restrictions and precautions which appear on the labels of these products. Test for compatibility of products before mixing.


Always read and follow label directions

Labeled Crops

  • Alfalfa
  • Brassica vegetables
  • Citrus fruits
  • Corn, field
  • Corn, pop
  • Corn, seed
  • Corn, sweet
  • Cotton
  • Cucurbits
  • Fruiting vegetables
  • Leafy vegetables
  • Legume vegetables
  • Rice, grain
  • Rice, straw
  • Root and tuber vegetables
  • Sorghum (and other cereals)
  • Sugar beets
  • Tree nuts
  • Wheat

Application Instructions

Common Questions

Problems Controlled


Product Brochure

Research Library



What is your expected soybean selling price
per bushel?


What is your expected yield on this field?


What is the cost per acre of your insecticide?


What is the cost per acre of your application?

enter 0 if tank mix with fungicide or herbicide, enter 5 if unknown.


Your economic threshold for aphids per soybean plant is

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