[Market-farming] Fruit Set Temperatures

Allan Balliett allan.balliett at gmail.com
Mon Aug 6 05:55:06 EDT 2012


Jay - Thanks for this information. What brand/model of spinner heads
are you running? What timer equipment are you using? Changing the
subject a little: do you do any conditioning on your hard water for
irrigation? -Allan in WV

On Mon, Aug 6, 2012 at 2:21 AM, Jay Sleichter <jaysleichter at yahoo.com> wrote:
> We have been running spinner misters for evaporation cooling on our tomatoes
> since late June.  It has been 95 to 110 for, what seems like all summer.
> They are on a timer and are set to start at around 11 am and run until 6 to
> 7 pm.  They run for 2 minutes out of every 10 minutes during that time
> frame. By the time the 10 minutes are up, most to all of the water has
> evaporated and the foliage is dry.  This has only been running on the big
> tomatoes, not cherry tomatoes.  The cherry tomatoes don't seem to be
> bothered with the heat.  This is only on the days it gets above 95 degrees.
>
> It is working very well.  On the hottests days it was dropping the
> temperature in the high tunnels 10-15 almost 20 degrees (if the wind was
> blowing good) 10 to 15 degrees was very common.  I wish we had  shade cloth
> too, but we don't.  The tomatoes have been blooming and setting this whole
> time. My later plantings are looking really good and are starting to really
> set fruit despite drought and heat stress.  I have seen no signs of leaf
> mold or foliar diseases.
>
> The only down side is our water is very hard and it is leaving white residue
> on all the plants, tomatoes and plastic.  It washes off the tomatoes, but I
> don't always have time to wash all of them by hand. I try to wipe the
> biggest ones off.
>
> Jay
>
> Jay's Jellies, Produce and More
> Clay Center, Kansas
> www.jaysjellies.com
> http://rvp.locallygrown.net/
> ________________________________
> From: Allan Balliett <allan.balliett at gmail.com>
> To: Market Farming <market-farming at lists.ibiblio.org>
> Sent: Sunday, August 5, 2012 3:02 PM
> Subject: [Market-farming] Fruit Set Temperatures
>
> Howdy -
>
> Here in the mid-atlantic our daytime temps have been staying pretty
> much up in the 90s the last 3 weeks or so.
>
> While I got pretty good harvests of tomatoes, eggplants and sweet
> peppers last week, I don't see much fruit out there this week on the
> peppers or egg plants (tomatoes are, fortunately, loaded)
>
> I don't see many blossoms, either.
>
> I have some bush beans that are full of blossoms but are taking their
> sweet time to make any beans.
>
> Mr. Google has let me down for locating a precise and authorative
> explanation of reduced fruit set in peppers and eggplants and beans
> due to high heat that  I can pass along to my CSA members this week.
>
> I'm wondering if anyone reading this list can point me to such a
> document (like from a University, or something)
>
> Or, am I kidding myself and my peppers and eggplants have just quit
> after one fruit set?
>
> It's raining outside right now. Praise the Lord! I don't think it's
> getting cooler any time soon, though.
>
> Thanks
>
> -Allan
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