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Spraying liquid Fert 4-5-5 w/iron in 90 degree heat?

Discussion in 'Pesticide & Herbicide Application' started by HenryB, Aug 16, 2009.

  1. HenryB

    HenryB LawnSite Bronze Member
    Messages: 1,844

    Do you think spraying at this temp will cause any burn. I think the low N should make it OK. I'd be using 1gal/k of water. Any advice?
  2. greendoctor

    greendoctor LawnSite Fanatic
    Messages: 9,766

    It is not only the N you need to think about. Iron is something to be careful of in hot weather, especially if it is humid as well. There is a risk of creating black grass if the rate applied is at the upper limit of the range.
  3. spidyx

    spidyx LawnSite Member
    Messages: 6

    spray it every day in tampa fl, 90+ every day down here. mixed with 2 other fertilizers not a problem on st augustine and at the high rate. does a great job but does not last long maybe 4-6 weeks

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