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  • From: "Mark Angermayer" <>
  • To: "North American Fruit Explorers" <>
  • Subject: Re: [NAFEX] Apple pests and drops?
  • Date: Wed, 30 Jun 2010 15:52:37 -0500


I know orchard sanitation is a big deal. But practically speaking, it's
pretty labor intensive to pick up all that fruit.

I've toured lots of commercial operations and they have fruit laying all
over the ground. I suspect this is probably the norm because I've read
commercial publications recommending fungicide applications hit the fallen
fruit below the trees.

I used to pick up all the fallen fruit, but now, if I walk past a tree and
need to remove some fruit, I toss it on the ground. The ground under my
trees is littered with fruit, just like commercial operations I've seen.

In our hot KS sun, they degrade fast. I do try to squish them when I walk
through the orchard. My mowing equip squishes a lot of them too. I suspect
worm larva don't enjoy that.


----- Original Message -----
From: "loneroc" <>
To: "North American Fruit Explorers" <>
Sent: Wednesday, June 30, 2010 12:28 PM
Subject: Re: [NAFEX] Apple pests and drops?

> Howdy,
> I am thinning apples now. Is it imperative to pick up every fruit?
> I understand that curculio won't emerge from fallen apples.
> There is some codling moth, maybe one in every 30-40 apples have frass.
> Will codling moth emerge from fruits I leave lay or that I toss on the top
> of the compost? Or, since the grubs are fairly small will they croak?
> I haven't yet sprayed my first of two imidan sprays. I plan to do so when
> I'm done thinning. I imagine that the apple maggots have started to fly
> around, too. How long do the larvae have to be in the fruit for them to
> able to emerge from the apple and dig into the soil for overwintering.
> Ideally, my hope is that I can safely leave the damaged fruit on the
> without increasing my pest populations. I do plan to pick up all the
> that fall later in the year through the end of the harvest. By the time
> apples are big enough to drop on their own from about August 1 or so
> I'm quite sure that at least the apple maggot would be mature enough to
> itself into the ground, waiting to annoy me again next year.
> Any other thoughts on "danger" posed by drops?
> Thanks,
> Steve Herje, Lone Rock, WI USDA zone 3/4, where the first usable Vista
> Bellas are dropping. They're small but have some color and will bake up
> into the first pie of the season.
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