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Curious about Brown Patch w/ organic

Discussion in 'Organic Lawn Care' started by Pistol, Mar 14, 2009.

  1. Pistol

    Pistol LawnSite Member
    Posts: 190

    In the past, I have had problems with brown patch while using synthetic Ferts. I had a great looking lawn for most of the summer, but inevitably i would need to spray fungicide. I don't know if you can avoid it when you combine high N ferts and our hot humid summers.

    So does an organic system eliminate or sig. reduce the potential of getting brown patch? Any thought about this?

    Thanks, Pistol
  2. HayBay

    HayBay LawnSite Senior Member
    from Ontario
    Posts: 846

    Cultural control
    Avoid unbalanced or excessive nitrogen applications particularly where there is a history of the disease. Reduce frequency of mowing. Reduce irrigation, especially late in the day during danger periods.
  3. Pistol

    Pistol LawnSite Member
    Posts: 190

    What does the reduction of mowing do? I don't water any time other than mornings. I am switching over to an organic system: Scotts organic fert., leaf compost & worm poop topdressing. Thanks
  4. quackgrass

    quackgrass LawnSite Senior Member
    Posts: 253

    Brown patch gets really bad when you combine frequent night watering with water soluble quick release synthetic fertilizer in the spring or early summer.

    Using a slower release organic will certainly help, try to put most of it down in the fall and very early spring so you don't need much in late spring or summer.

    Topdressing with peat or compost is a great idea.

    Discontinue frequent night watering with morning drenches a couple times each week. If some areas are getting stressed, go ahead and cool them down with a noon mist.

    Aerate. aerate aerate again.

    Over seed with a resistant species of grass.

    Tell the customer you don't spray fungicides until all the above criteria have been met, because it will just come back.
  5. Smallaxe

    Smallaxe LawnSite Fanatic
    Posts: 10,081

    Switching to an organic system should work well. Scott's fert still uses high water soluable N - in the organic mix - doesn't it.

    I looked it up one time and it seemed there were some 'cheats' in there that were water soluable ready to go , but slow release.

    How much do you let the soil dry between waterings? How deep are the roots into the soil profile?
  6. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,308

    I have had great results in controlling summer/brown patch with compost. As others have noted, there are additional factors that you can control as well which will help reduce your chances of getting it.
  7. mrkosar

    mrkosar LawnSite Senior Member
    from Ohio
    Posts: 664

  8. HayBay

    HayBay LawnSite Senior Member
    from Ontario
    Posts: 846


    frequent mowing renders fine turf more susceptible, as the fungus gains entry through wounds
  9. Smallaxe

    Smallaxe LawnSite Fanatic
    Posts: 10,081

    That is exactly what I was thinking about in relation to common diseases!!!
    Do you have any good and concise website articles.
  10. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,308

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