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Calcium or lower pH?

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Calcium or lower pH?

Post  Dan R on 8/31/2013, 5:25 pm

I noticed with some some chagrin that most of my Acorn squash rotted on the vine this summer.  I did some research, and thought blossom end rot was the culprit.  Other sites pointed to a calcium deficiency.  I had a soil test a year ago, and my calcium was 3006 ppm.  My pH is 7.0.  I have raised beds, with black dirt, but the base soil is heavily clay.  I add 1-2 inches of year old compost every year.  Any thoughts?

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Re: Calcium or lower pH?

Post  Turan on 8/31/2013, 7:47 pm

BER is a tomato problem. In squash it is usually lack or insufficient pollination.

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Re: Calcium or lower pH?

Post  GWN on 8/31/2013, 8:06 pm

Did they really rot on the vine, or did they not get pollinated? Often it appears like blossom end rot when the squash is not pollinated. At least until someone explained it to me, I just thought I had some mineral lack... VS Bug lack
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Re: Calcium or lower pH?

Post  Dan R on 8/31/2013, 8:10 pm

@GWN wrote:Did they really rot on the vine, or did they not get pollinated?  Often it appears like blossom end rot when the squash is not pollinated.  At least until someone explained it to me, I just thought I had some mineral lack...  VS Bug lack
They rotted.  Turned black and yellow, and shrunk.  Looked nasty.

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Re: Calcium or lower pH?

Post  camprn on 8/31/2013, 8:27 pm

Did they grow to nearly harvestable size and the rot from the ground up?

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Re: Calcium or lower pH?

Post  Turan on 8/31/2013, 8:28 pm

Take a look at this page. It has some pictures you can compare with.
http://pollinator.com/squash.htm

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Re: Calcium or lower pH?

Post  camprn on 8/31/2013, 8:30 pm


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Re: Calcium or lower pH?

Post  GWN on 8/31/2013, 8:32 pm

that is what they do when they are not pollinated. They just get to a certain size and then rot. Usually pretty small.
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