What Glyphosate has worked best for you?

Discussion in 'Pesticide & Herbicide Application' started by wildstarblazer, Mar 12, 2014.

  1. Glenn Lawn Care

    Glenn Lawn Care LawnSite Silver Member
    Posts: 2,647

    Glystar worked well for me last year. Its slow but effective.
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  2. Skipster

    Skipster LawnSite Bronze Member
    Posts: 1,074

    Do you have any scientific data that you can share suggesting that the addition of humates can reduce herbicide rates and increase liquid fertilizer efficiency?

    I ask because I just read a couple of research papers similar to this topic. One paper (Diuron herbicide degradation catalyzed by humic acid compounds: Environmental Chemistry Journal Dec 2013) concluded that humic acid compounds catalyze the degradation of diuron in water. This is confirmation of earlier work (and of our environmental communication) that pesticides degrade in the environment. But, it also suggests that adding humic acids to herbicide solutions could make them less effective.

    A second paper I recently read concluded that humic acids reduced plant uptake of imazethapyr, one of the active ingredients in Dismiss South (a product that some on this board may use).

    I am actively engaged in testing products for manufacturers, including surfactant manufacturers. I see a lot of claims that different products allow you to reduce herbicide or fertilizer rate, but very few of these claims seem to be backed by scientific evidence. I wish I could try them all out, but there are so many that I just don’t have the time or space. I will tell you that the ones I have tried haven’t lived up to their claims. If you have some evidence that these claims are accurate, I would love to see it and maybe even begin some research.
  3. Ric

    Ric LawnSite Fanatic
    Posts: 11,956


    My Snake Oil Comment was pretty much addressing your same point. I just wasn't ready to write a book about it. But Basic Chemistry everyone should know is the pH Scale. Several pesticides will work better as alkaline solutions. Certainty/sledgehammer are perfect examples from alkaline herbicides. I add baking soda instead of acid to several pesticides.

  4. White Gardens

    White Gardens LawnSite Fanatic
    Posts: 6,776

    Back to the RU and Glyphosate debate.

    We use Round-Up Pro. I've messed around with other Glyphosate products, and did see a minor, but effective difference in the RU pro over other brands.

    How much of a difference? Can't say for sure, but it seemed to be a better kill over-all when using a drift cone and very fine mist spot applications.

    Now, one reason I stay with RU pro is that the cost is negligible for a 2 gallon bottle over the course of a season compared to an "off" brand. Basically the 20 dollar or more difference in the grand scheme of our over-all overhead isn't going to make a lick of difference.

    So I stick with RU Pro, the added proprietary chems in the solution is worth the cost.

    EDIT: Also wanted to state that we use Snapshot in our program along with spot treatments. The Snapshot of course minimizes weed growth and cuts back at least 75% of our spot spraying treatments during the season.

    Last edited: Mar 13, 2014
  5. clemsonturf

    clemsonturf LawnSite Member
    from SC
    Posts: 109

    Ric- you may need to revisit the MSDS for these products then.
  6. phasthound

    phasthound LawnSite Platinum Member
    Posts: 4,584

    I drink snake oil all the time and it has protected me from all cancers. Still on the edge about the diabetes thing. :drinkup:
  7. phasthound

    phasthound LawnSite Platinum Member
    Posts: 4,584


    I'll look into the research. But have limited access to all the studies. I'm not a scientist nor a researcher.
  8. turfmd101

    turfmd101 LawnSite Bronze Member
    Posts: 1,289

    The primary factors that inhibit Glyphosate.
    1. pH base of the fill water. High pH water will degrade the AI. Neutral is best.
    2. Mixing too heavy. Stay with the recommend rate.
    3. Spraying to heavy. Do not soak spray.
    4. Drought causes plants to shut down growth. This will hamper intake of the herbicide. If under drought conditions. Irrigate to increase herbicide mobility.
    5. Spray lightly. Just enough to coat the leaf surface. Spraying to a drip will cause the plant to shut down. The plant will detect the overabundance of herbicide beyond the water and protect itself from what it detects is not the water.
    6. Understanding how environmental sceneries effect how plants react to herbicides.
    7. Always use a fresh herbicide mix.
    8. RoundUp quick pro is the bomb.
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    Last edited: Mar 13, 2014
  9. Skipster

    Skipster LawnSite Bronze Member
    Posts: 1,074

    If we can’t find this information readily available, we should probably be skeptical of the concept.

    I’m usually pretty leery of an additive that claims to reduce usage by any type of amount, especially a large one. If an additive improved efficacy, you can bet that the herbicide manufacturer would endorse it in a heartbeat – and advertise it heavily. If the additive could reduce the amount needed to be effective, manufacturers would endorse the additive and adjust the price of their product accordingly. If the additive were cheaper than the product (as you indicate humic acid to be here), wouldn’t it make sense for the manufacturer to simply include the additive in its package? That would reduce their cost of inputs and reduce their warranty claims.

    With as much research is done on these products and all the crazy ideas that are tested in order to improve them, I really don’t see how something like this would have been overlooked or passed up.
  10. phasthound

    phasthound LawnSite Platinum Member
    Posts: 4,584

    I don't have an answer for that. I'll see what I can find, but it's not high on my list right now.

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