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Date: Wed, 20 May 1998 18:09:37 -0400 (EDT)
From: John A Skinner <[log in to unmask]>
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To: Informed Discussion of Beekeeping Issues and Bee Biology <[log in to unmask]>
Subject: Re: Bees / Drones / Insecticides
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Rich, A few suggestions you may consider concerning question 2. below
 
good luck, John
 
John A. Skinner           218 Ellington Hall
Extension Apiculturist    University of Tennessee
[log in to unmask]          Knoxville, TN  37901   (423)974-7138
 
 
On Tue, 19 May 1998, Richard H. Glassford II wrote:
> ...
> 2.   I have a small orchard with many squash plants under those trees.
> Wild bees love to collect the pollen from the flowers.  I am assuming
> that my honey bees will do the same.  The fruit trees will need to be
> sprayed throughout the season.  The hive is about 50 feet from the
> trees.   Will the over spray onto the squash plants affect the bees only
> when it is wet. Are there certain kinds of pesticides that are less
> lethal to the bees.   I usually use diazinon and malathion for my apples
> and cherries.
>
 
Native bees including the squash bee, Peponapis, will start to collect
pollen very early-first light and your honey bees will punch their time
clocks a half-hr later, if we can compare Utah and west TN.   Check out
when your squash flowers close up.  The plants produce male and female
flowers.  pollen on males only, must be transferred to fruit producing
female... The flowers are only open one day, usually begin to close in TN
on a warm day at 9am and are closed tight by 11 or noon.  After this time
bees learn the storehouse is closed and stop visiting.  On cold and or wet
days the flowers may stay open longer.  If spraying must be done, spray
when the bees are not present - night or late afternoon.
 
Diazanon and Malathion are both listed as highly toxic in a publication
written by Larry Atkins and I would recommend that you choose something
less toxic that will still do the job on the pest you are trying to
control.  This publication is probably available on the web and I can also
snail mail one we have that has incorporated Larry's data into it,
if you give me your address.
 
I suggest you ask your county agent for suggestions of recommended
materials in your local area.