Metam potassium 690
Metam potassium 690

CAS Number: 137-41-7

Chemical Synonym: Metam KLR 54%, Taminco Metam K MUP, Enfuse K 690, Potassium N-methyldithiocarbamate

  • Crop protection
Product Description

Soil disinfectant for controlling nematodes, soil diseases, weeds and germinating weed seeds. The product works by fumigation. It is applied prior to seeding or planting, creating a favorable biotope that promotes healthy crop growth.

Metam potassium does not damage or leave residue in the planted crop. The activity is due to its decomposition into methyl isothiocyanate (MITC).

Metam potassium can be used for many different types of cultivation, including:

  • Root crops such as carrots, potatoes, peanuts, beets
  • Vegetable crops like lettuces, cucurbits, onions, leaks, tomatoes
  • Strawberries
  • Tobacco
  • Tree nurseries
  • Vineyards and orchards
  • Ornamentals like cut flowers, bulbs, perennials
  • Tropical crops like bananas, pineapples
  • Rice growing (control of "red rice")

The amount of the product that should be applied varies according to the kind of pest to be controlled and the type of soil and climate of the region of application. It is therefore necessary to refer to usage and to amounts approved in the region concerned.

A good application technique is the key to good and lasting disinfection.

Before applying metam potassium, always thoroughly cultivate the area to be treated, breaking up clods to facilitate the uniform distribution of the product.

Keep soil humid 5 to 10 days prior to soil disinfection to activate and sensitize target organisms. Soil humidity at time of application must be between 50 and 75% of the water holding capacity.

Metam potassium can be applied by two methods: soil injection and drip irrigation system.

Injection allows the product to be applied at 10 to 40 cm deep with machines equipped with shanks or goose footshaped blades. The machines are mounted at the rear of a tractor.

Application through the existing drip irrigation system is done by incorporating Metam in the irrigation water with the help of a dosing pump.

After the soil has been treated, it must be left for 2-4 weeks depending on the type of soil, the temperature and the moisture of the soil. Decomposition of any product still remaining in the soil after that time can be accelerated by aeration.

Since methyl isothiocyanate is phytotoxic, planting may not take place until the product has completely decomposed and the treated soil has been fully aerated. In order to decide when planting can take place, a sowing test (cress test) on a representative sample of the treated soil is recommended.

Not all uses and/or products are registered in all countries/regions. Please contact your local Customer Service Representative for availability in your region. Metam potassium is a “Restricted Use Pesticide” in the US.

Additional Product Information
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Regulatory Information

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