1. Can’t make it to the GIE+EXPO 2017?
    LawnSite brings the trade show floor to your fingertips with our new GIE+EXPO 2017 Sneak Peek video series debuting now in the Lawn Mowing forum.

    Dismiss Notice

Pre-emergent breakdown

Discussion in 'Pesticide & Herbicide Application' started by ThreeWide, Oct 14, 2005.

  1. ThreeWide

    ThreeWide LawnSite Bronze Member
    Messages: 1,116

    Something I read today suggested that pre-emergent herbicides breakdown in the soil by microbial activity.

    My previous understanding was that moisture was the main trigger for breakdown. So if one applies pre-emergent when the soil temperature is 40 degrees or less, will there be any breakdown?

    Knowing this could have a big impact on how I approach the January-February applications next year.
     
  2. GreenUtah

    GreenUtah LawnSite Senior Member
    from SLC, UT
    Messages: 866

    sunlight also needs to be taken into account, along with soil type (sand/loam/clay).
     

Share This Page