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Pre-emergent Question

Discussion in 'Pesticide & Herbicide Application' started by GravelyGuy, Feb 21, 2008.

  1. GravelyGuy

    GravelyGuy LawnSite Silver Member
    from Indiana
    Posts: 2,517

    I have a 5 step program for most people unless they want otherwise. Would there be a downside to putting down pre-emergent for the first 2 steps?

    I can get 19-0-5 Dimension with 35 % slow release for the same as my summer fert. The only downfall that I can see would be that it is only 35% slow release vs. 50% in the other stuff.

    The only reason I ask is because I want to get my fert. ordered since nitrogen prises are on the rise again, but I don't know how many new accounts I'm going to be able to pick up. I want to be sure to have enough and be able to use the left over ASAP as I don't have room to store a lot.

  2. Victor

    Victor LawnSite Bronze Member
    Posts: 1,637

    A lot of guys use pre em's on their first two apps Ryan. They just do split apps. There's nothing wrong with that.
  3. Marcos

    Marcos LawnSite Gold Member
    Posts: 3,720

    Some of my customers are initially paranoid about weeds; and "think" they need extra crabgrass prevention than usual...

    And...in certain cases...where people tend to gouge the living daylights out of their sidewalk edges regularly...a "double-shot" in specific locations, done IPM style, is certainly warranted.

    But actually their problem is often that their turf is not dominant enough to successfully compete with whatever creepy-crawly weed might come along, be it crab, foxtail, chickweed, spurge, purslane, or whatever.

    The best weed control doesn't come from a bag or bottle.
    It comes in the form of sheer competition.
    Your customer has to learn this, too!

    So your job is not just doing the applications, but teaching the customer how to work with you...how to mow properly...how to water properly...and to buy into the right program you offer that might include such extremes such as TOTAL turf renovation in some areas, if it's necessary to get the weeds in check in the long run.

    With me...It's typical that I'll 'guarantee' the work by the customer buying a full program, with fall aeration, and a nice compost topdressing once every other year or so...depending upon the soil makeup.

    (Some people I've found really get in to it... and want to learn about diseases, etc.
    And I've actually LOST some business this way to people who decided to 'do it themselves' after I taught them "how"...
    But to compensate for them, I know I've picked up more long-lasting referrals. So I feel it's definitely worth it!)
  4. earthscapes40

    earthscapes40 LawnSite Member
    Posts: 5

    I have several clients in the same sub-division and the yards are all bermuda lawns and the yards are infested with the weed named Henbit which I believe is a winter annual. My first question is I am recommending mowing first, but in the mowing process is necessary to bag or is mulching okay. The second question most of my clients don't want to deal with any contracts with Scott's, Tru-Green, etc. to control the weeds what do you suggest how to handle this issue to where I can possibly benefit from this process.
  5. Jason Rose

    Jason Rose LawnSite Fanatic
    Posts: 5,858

    Well said Marcos.

    I also do a split application of preemergent, also have the usual few that request it (even though I do it already). But I just got a call a few minutes ago from a mowing customer that wants he and his daughter on my 'program' but wants a single application of pre-em. He said that's what their getting now, and just wants to keep the price down by getting 4 applications instead of 5. Great, that means I will have to keep another product (a single app product) on hand.
  6. earthscapes40

    earthscapes40 LawnSite Member
    Posts: 5

    What does your five step process include for bermuda grass?
  7. earthscapes40

    earthscapes40 LawnSite Member
    Posts: 5

    Need Help with controlling winter annual called "Henbit"
  8. GravelyGuy

    GravelyGuy LawnSite Silver Member
    from Indiana
    Posts: 2,517

    With a split application do you put down exaclty half the rate and then put down the other half about 6 weeks later? Do you still get a good spring greenup doing it like this?

    Thanks for the help.:)
  9. thecompletehome

    thecompletehome LawnSite Member
    Posts: 24

    Henbit is very easily controlled by most herbicides. It also struggles when the temperatures heat up. If they have problems with henbit annually, you may consider a pre-emergent application in the late fall to help combat it. Most of the pre-emergent herbicides are labeled for henbit.
  10. Jason Rose

    Jason Rose LawnSite Fanatic
    Posts: 5,858

    The "split application" refers to a product that has basically half the needed pre-em. in it for the year (talking granular with fertilizer products) ie. using Dimension .1% ai. and applying it twice, or using Dimension .21% ai. and applying it once. The amount of Nitrogen per K should remain the same. Of course both products will list a wide range of application rates based on your region and turf mowing heights.

    Try to select a product that will allow you to not over apply the N. to acheive the necessary % of ai. to be applied. (don't try to use .1% dim to cover a lawn in a single app, or you will end up putting down nearly 2 lbs. per K of nitrogen.)

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