Weed Watch: Kochia

 

Kochia

Kochia is one of the earliest summer annual broadleaf weeds that germinates in the spring — and it continues to germinate throughout the growing season.1

 

Kochia is notorious — for being a troublesome weed across the Great Plains and western U.S.1,2

 

This problematic weed is known to reduce soybean yields by 30% 3

 

Young Plants

Distinguishable by their small rosette shape, young plants also have lance-shaped, pale green leaves that are covered in hairs.4

 

Mature Plants

Kochia can grow to a bushy plant, up to 6 feet high.1,5

 

Seed Pain Points

Seeds are numerous as — each plant can produce up to 30,000 SEEDS, which can germinate at shallow depths within 2-3 hours and stay viable in the soil for up to two years.1,6

The evolution of herbicide-resistant and tough-to-control kochia is rapid, and short-term weed control for one season using one herbicide site of action won't do the job of preventing the addition of resistant seeds to the soil bank. Controlling kochia requires a long-term strategy that includes using residual herbicides with overlapping sites of action in a diversified weed management program.1,2

Keys to Managing Kochia1,2

  1. Rotate crops

    to diversify herbicide programs and weed control strategies.

  2. Start clean

    with a burndown herbicide or tillage.

  3. Apply a pre-emergence residual application,

    using a residual product within 2 weeks before planting or prior to crop emergence.

  4. Apply a postemergence application to target small weeds early,

    before weeds grow taller than 4 inches.

  5. Prevent Seed Production.

    If weeds escape, use tillage or physically remove them before plants produce seed.

A Closer Look At Postemergence Application

The key to controlling kochia is all about the right timing and the right products. Apply a postemergence herbicide 20-30 days after planting, when kochia weeds are less than 4 inches tall and easier to control. Choose the right products with the right modes of action to give your crops the best defense against weeds:

XtendiMax® herbicide with VaporGrip® Technology 
  • XtendiMax® herbicide with VaporGrip® Technology, a restricted use pesticide, gives you up to 14 days of soil activity on certain small-seeded broadleaf weeds and is an effective tool to control emerged kochia*
Warrant® Herbicide 
  • Warrant® Herbicide provides excellent levels of residual control on small-seeded broadleaf and grass weeds
Roundup PowerMAX® 
  • Roundup PowerMAX® herbicide controls emerged broadleaf weeds and grasses

With the right postemergence application, as part of a complete strategy, you can keep better control of weeds and help protect your crops to canopy.

Choose the System That Means Results

Choose the system that gives you advanced weed control and yield potential.

See System Overview