Crabapple spray program?

Discussion in 'Pesticide & Herbicide Application' started by gqnine44, Jan 21, 2009.

  1. Trees Too

    Trees Too LawnSite Silver Member
    Posts: 2,311

    To a degree, I agree with you about the level of "usefulness" of HORT OILS. In general, they're intended to control scale, certain gall insects (i.e. adelgids), and some mites. I have found that I can get reasonable control of some types of scale. (Although it may take 2 apps in the spring to achieve this control.) Spruce adelgids?? The oil sprays fail to make critical contact, and the galls form anyway! Good coverage is essential; yet at the same time you increase the chance of "oil burning" spruces. As for mite control with oil. I don't see it.

    In the end I think that hort oils are generally used by the big revenue companys as their Round 1; to get out the door first thing in the early spring when temps get into the 30's!!!
     
  2. Cadzilla

    Cadzilla LawnSite Senior Member
    Posts: 899

    Good post. I agree. I can control scale with some Sevin and a 1% light mix of oil in crawler stage. Mites don't over winter on plant materials is my understanding and part of my decision stems from logistics as well. I don't have indoor storage for my spray rig and spring oils come early for me. I'd be froze up.

    I shouldn't say oils have no use....they do but if you're also applying foliar apps at bud break and beyond all season I see no need for oils. Control em when they are active.

    To a large extent though Oils that are sold by the main companies are snake oil in my opinion. It's a gravy app.
     
  3. Trees Too

    Trees Too LawnSite Silver Member
    Posts: 2,311

    Ah yes...Sevin. The insecticide that has stood the test of time. When I was just a rook, I inadvertently dmgd some flowers and vines w/ over-spray (non -target) w/ Sevin. Also as I remember, it was a pretty touchy product to use in hot summer weather. Getting back to the original ? in this thread. If someone wanted to mix insecticide w/ their crab fungicides, they could control tent cats as well. But scab control is 1st and foremost when it comes to crabs.
     
  4. Cadzilla

    Cadzilla LawnSite Senior Member
    Posts: 899

    I usually have insecticide mixed with my fungis. I prefer a more broad spectum mix than a more target specific app I suppose.

    For example my second round of fruit tree sprays corresponds with my first of two Spruce and Pine I and D's so I don't want to miss anything and include insect control also. It's not terribly IPM'ish but it gets the control I need.

    I love tree spraying. A lot more than lawn spraying.
     
  5. Trees Too

    Trees Too LawnSite Silver Member
    Posts: 2,311

    My fungicides of choice for annual-seasonal Scab PREVENTION are "Eagle" or "Tourney". Have also use "Dorado" as a follow-up app and gotten reasonable control.
     

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