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michael357

What a dope

17 years ago

I dutifully went out and sprayed my 3 yo peach tree a couple of weeks+ ago with dormant oil and FORGOT THE KOCIDE. Didn't realize it until last Sunday while checking the buds. The buds are at the green calyx stage now. I presume it is too late to spray now for Peach Leaf Curl. The tree has been dormant sprayed only in the early Spring the previous 2 years and no signs of PLC have ever been evident. Is it probable there will be no problem with PLC this year? Seems I read something over the winter that suggested there was no need to apply copper sprays for PLC if there has been none in the previous 2 yrs.. Tommorrow (Wednesday) is the last day I'll be able to spray before the wind and frezing temps. move in for another 5 days at least.

One thing I've learned is to not wait around for the weather to be right for dormant oil at the expense of getting a Kocide spray on. Seemed like a good idea but in the future, I'll lay down the Spring dormant Kocide and wait for the 50/50 chance of applying dormant oil before or at tight cluster on apples and dormant on peach. It is a real crap shoot weather wise around here with spraying since I choose not to spray in winds above 5-10 mph and even then am hesitant to do so. Welcome to the Great Plains in Spring time! Yesterday the wind was 45 sustained and 60mph gusts all day, didn't get out to spray :) Speaking of yesterday's wind, the day before yesterday I finished staking my young apples, LUCKY ME.

Oh, and for those interested, the Freedom, Jonafree, N.Spy and Golden Russet are just starting to break silver tip. the other apples have better sense.

Michael

Comments (9)

  • 17 years ago

    You've had an issue with PLC before? I generally only see it where there is too much shading. I only spray trees when they've already suffered from it, and then not always.

  • 17 years ago

    Hi Harvestman: No not yet, never grown peaches before. The tree is shaded for the 1st 3 hours in the morning partially until the neighbor's hackberry to it's east leafs out, then fully for the 1st 3 hours after that. I've been asking folks all over the county if they have any peach trees to see if they ever had PLC, haven't found anybody yet that has any peaches. I decided when planting the tree to start fighting PLC in case I ever found that it was around here being that it is pretty hard on the trees. The state extension here gets all it's fruit info. from IA and MO, I live in north-central KS. One of their plant pathology profs. has been very helpful allowing me to e-mail macro shots directly to her for a quick evaluation.

    BTW, the tree was planted from a feathered whip in April, 2006.

  • 17 years ago

    Unless the common wisdom in your area is that left untreated infection is inevitable, I wouldn't worry about it, there's enough to do withought chasing ghosts. I almost never spray for anything but insects and BR on peaches and the earliest bearing don't get brown rot here in the humid northeast.
    That said, morning shade is the worst- that's when you want to get the dew off the trees asap. Your tree would survive a bout of plc if it is vigorous to begin with. I say find out with experience instead of spraying unnecessarily for the life of the tree.

  • 17 years ago

    Michael,

    I'm with Hman. If you haven't seen it yet, chances are you won't see it this year either. I get leaf curl here, but live close to MO border, and get a lot more rain than central KS.

    We are at pink and bloom on peach. Weather forecasts are mixed, but one forecaster is calling for 24F this weekend. If that happens, it's curtains for our fruit crop.

  • 17 years ago

    Thanks Olpea and Hman: Certainly unfortunate placement but that was the best I could do in leiu of talking the neighbor into filling my wood pile with his hackberry. To be certain the tree is healthy with the exception of a couple of very small spots I need to check out on one scaffold for Lesser Peach Leaf Borer. I'll let the Kocide slide this year (no choice anyway) and try not to worry about it, it's just water under the bridge.

    Olpea, late this morning I noticed the one apricot in town is about at 1/4 bloom and the open blooms shook off a 26 deg. low last night. What stage(s) are your apples at? Hope your forecaster is wrong and this year is like last.

    Michael

  • 17 years ago

    I've had a peach tree in partial shade for twenty years now. I've never had to treat it and never had a problem with PLC and it still bears so heavily I have to support branches when the crop comes on. Zone 6, southeasten ohio

  • 17 years ago

    Micheal,
    It is suppose to snow here this weekend and get down to below 20 (I think that I am probably a few hours from you). I can relate to the apricot as my nectarine has beautiful blooms! I am hoping that the bad weather quickly leaves.
    Jenny

  • 17 years ago

    That's good to hear Calliope, my brother is in the Baltimore area, too bad the only thing he likes to raise is grass and horses, need any stable manure?

    Ditto Jenny. Have you seen this chart at the link below yet?

    Here is a link that might be useful: Spring frost threshholds

  • 17 years ago

    I have seen one, but not in that detail. What a great site! Some of my nectarines are at a full bloom some are at the stage prior to that. Hoping that it does not fall below 20.
    Jenny