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Good time for first app of NPP 1-2-3 for NRS?

Discussion in 'Organic Lawn Care' started by DA Quality Lawn & YS, May 13, 2012.

  1. DA Quality Lawn & YS

    DA Quality Lawn & YS LawnSite Fanatic
    Messages: 9,280

    Picked up some NPP 1-2-3 from ICT. Want to use it on 3 lawns infected with Necrotic Ring Spot. All three lawns had bad flare ups late last summer, and some of the frogeyes even remain up to now.

    Looks like a good stretch of warm (70 deg +) weather this coming week. Lawns are not stressed now. Is it a good time to put down a preventative app of 1-2-3 NPP at this point? Soil temp looks to be 60 or so and likely to go up this week.
    Should I put down a curative rate of this product since there are active pathogens on each of these properties?

    I would ask ICT Bill but cannot get ahold of him at all.
  2. NattyLawn

    NattyLawn LawnSite Bronze Member
    Messages: 1,643

    When I used NPP there was no preventative rate, just curative. If you feel the need to apply a preventative, I would say go ahead. Follow that up with an organic fert app (NPP is not nice to biology) and don't fertilize in the summer, as the N will help fuel the disease.
  3. pieperlc

    pieperlc LawnSite Senior Member
    from Midwest
    Messages: 545

    How do you plan to apply this? How many gal/k for carrier. I'm using some and wondering how the best way will be to get the product down into the soil?
  4. phasthound

    phasthound LawnSite Fanatic
    Messages: 5,149

    As per the label:
    Preventative rate; mix 2oz 1-2-3 NPP with 1 gal water to treat 1K. Apply every 14 days

    Curative rate: mix 3oz 1-2-3 NPP with 1 gal water to treat 1K.

    Other considerations:
    Do not irrigate for 4 hours if treating for tissue fungus.
    Irrigate with 1/4" to 1/2" water after application if treating for soil borne fungus.
    As Natty noted, follow up with a good soil inoculant and/or biologically active organic matter.
  5. DA Quality Lawn & YS

    DA Quality Lawn & YS LawnSite Fanatic
    Messages: 9,280

    Good information (some of which is on the label).
    So, for Necrotic RS, being a soil borne pathogen, the app really needs to be irrigated (rained or sprinkled) in, correct?
  6. phasthound

    phasthound LawnSite Fanatic
    Messages: 5,149

    Yes, that is correct.

    Other cultural methods such as aeration & proper irrigation should be part of the plan.

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