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Old 10-12-2012, 07:41 AM   #8 (permalink)
sandy0225
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Location: Muncie, Indiana zone 5
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Default Re: Black/Yellow Sigatoka?

I haven't noticed that bananas really care what the fertilizer is as long as they're getting plenty when they're actively growing. Yours are going to be really slowing down this time of year even where you live, so don't over do it. You can always keep them limping along and then really crank them next spring. Definitely don't go over the package recommendations this time of year, and even a little less won't hurt during the fall months.
Also, you can start greening them up with a foliar spray of miracle grow type fertilizer. Use about 1 tablespoon in a gallon of water, spray until the top sides of the leaves are wet to the point of runoff. Don't do this on a sunny day, do it when it's cloudy or move them to the shade. Then when they are dry, move it back to the sun. Watch it about a week, then if it's not greening up, do it again next week, you should be able to put some color back in them in a month's time. Once a week. And you won't overdose it and hurt the roots which would cause a whole new set of leaf problems.
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