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#1
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help with citrus prob
hi all,
I am in Brisbane, Qld, Australia. I have recently used a homemade recipe for white oil and sprayed my 3 small (about 1m tall) citrus trees with it for leaf-miner (I have since read that leaf-miners are generally dormant in winter anyway, but oh well, not to worry). The ingredients where 1 cup vegetable oil, 1.5 cups water and a teaspoon of dish-washing liquid. Since spraying with the oil about 2 weeks ago, I have noticed a considerable amount of leaves have fallen from the trees and some small shoots on the tahitian lime have shrivelled and 'burnt' after the application of the spray?! Understandable I am quite worried and have given all 3 trees a big drink of 4-Vital and an Organic liquid fertiliser and a dressing of dynamic lifter. Is this the best course of action now? Has anyone heard of this leaf drop in conjunction with a white oil spray? What more can I do for the trees? Thanks, Mick |
#2
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help with citrus prob
highly unlikely that mixture would do any harm, in my opinion there have been some very cold nights in brisbane recently though |
#3
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help with citrus prob
"MC" none wrote in message ... hi all, I am in Brisbane, Qld, Australia. I have recently used a homemade recipe for white oil and sprayed my 3 small (about 1m tall) citrus trees with it for leaf-miner (I have since read that leaf-miners are generally dormant in winter anyway, but oh well, not to worry). The ingredients where 1 cup vegetable oil, 1.5 cups water and a teaspoon of dish-washing liquid. Since spraying with the oil about 2 weeks ago, I have noticed a considerable amount of leaves have fallen from the trees and some small shoots on the tahitian lime have shrivelled and 'burnt' after the application of the spray?! Understandable I am quite worried and have given all 3 trees a big drink of 4-Vital and an Organic liquid fertiliser and a dressing of dynamic lifter. Is this the best course of action now? Has anyone heard of this leaf drop in conjunction with a white oil spray? What more can I do for the trees? Generally the only problems that can arise from a oil spray is spraying the plant in the heat of the day, or in the morning of a hot day. Some brands of spray oil (maybe all?) do warn not to spray when temps are likely to exceed 30degs cels. I assume the temp didn't get that high, or close, but if it did it could possibly be the cause. Only other problem is I have been told spraying both sides of all the leaves can actually suffocate the leaves. I wasn't sure on this theory, but a few weeks ago I checked my old tech notes, and it was a warning about it. Other than those 2 possibilites, and with everything else being unchanged (watering or lack of), then I have no idea. Don't over water them, just keep the ground moist. Hopefully they will recover. Good luck Thanks, Mick |
#4
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help with citrus prob
Thanks for your replies guys,
It certainly has been COLD in Brissy lately! Maybe not to southern standards, but in an old Qlder that is designed for summer temps, lately it has felt to me like it could snow at any time! It's colder at 10am inside the house than out!!! I did spray both side of the leaves, as I thought this was required for the spray to be effective? Oh well, fingers crossed ... I am trying my hardest not to kill them with kindness ( overwatering). I planted them into quite a clay-based area of the garden, so I presume the soil would 'hold' quite a bit of moisture?! I dug a nice big hole to plant into though, backfilled with good soil and built up the ground around each tree and mulched heavily with sawdust/manure and then straw, so hopefully this was the correct procedure?! Cheers again and any more advice would be welcome! Mick "Andrew G" wrote in message ... Generally the only problems that can arise from a oil spray is spraying the plant in the heat of the day, or in the morning of a hot day. Some brands of spray oil (maybe all?) do warn not to spray when temps are likely to exceed 30degs cels. I assume the temp didn't get that high, or close, but if it did it could possibly be the cause. Only other problem is I have been told spraying both sides of all the leaves can actually suffocate the leaves. I wasn't sure on this theory, but a few weeks ago I checked my old tech notes, and it was a warning about it. Other than those 2 possibilites, and with everything else being unchanged (watering or lack of), then I have no idea. Don't over water them, just keep the ground moist. Hopefully they will recover. Good luck |
#5
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help with citrus prob
"MC" none wrote in message ... Thanks for your replies guys, It certainly has been COLD in Brissy lately! Maybe not to southern standards, but in an old Qlder that is designed for summer temps, lately it has felt to me like it could snow at any time! It's colder at 10am inside the house than out!!! Well I'm on the Mid North Coast, NSW, and my Fiance came from Brisbane. She is finding the day temps here of around 23degs (though past few days lower) seemingly cold, even after 4yrs of adjusting LOL. Anyways, I doubt it has reached high 20's there, so I still guess that isn't a problem. I did spray both side of the leaves, as I thought this was required for the spray to be effective? So did I, until recently. Though the main experience I've had with spray oil (DC Tron Spray oil is what we use, a petroleum oil) is at work, I never sprayed both sides of the leaves, simply due to it being impossible in the situation we had to use it. A workmate brought the subject up while we used it, on whether or not it would suffocate the plant when sprayed to both sides, since it suffocates selected bugs. Another workmate said it did, he learnt it at Tech. It made me remember something about it, and a look through my tech notes showed it can harm the plant. I too wondered how it can get all of the bugs targeted, then again, maybe that's why repeat applications are sometimes needed? Perhaps the oil can easily get to the miners through the top of the leaves? Oh well, fingers crossed ... I am trying my hardest not to kill them with kindness ( overwatering). I planted them into quite a clay-based area of the garden, so I presume the soil would 'hold' quite a bit of moisture?! I dug a nice big hole to plant into though, backfilled with good soil and built up the ground around each tree and mulched heavily with sawdust/manure and then straw, so hopefully this was the correct procedure?! Sounds fine to me, as long as the sawdust had already broken down. ie was at least a few months old before applying. Still, can't see it harming the plant too much other than a Nitrogen deficiency, even then the straw mulch would counteract that as long as it too was aged slightly (not green) Cheers Andrew Cheers again and any more advice would be welcome! Mick "Andrew G" wrote in message ... Generally the only problems that can arise from a oil spray is spraying the plant in the heat of the day, or in the morning of a hot day. Some brands of spray oil (maybe all?) do warn not to spray when temps are likely to exceed 30degs cels. I assume the temp didn't get that high, or close, but if it did it could possibly be the cause. Only other problem is I have been told spraying both sides of all the leaves can actually suffocate the leaves. I wasn't sure on this theory, but a few weeks ago I checked my old tech notes, and it was a warning about it. Other than those 2 possibilites, and with everything else being unchanged (watering or lack of), then I have no idea. Don't over water them, just keep the ground moist. Hopefully they will recover. Good luck |
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