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Old August 8, 2016   #9
nctomatoman
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Join Date: Jan 2006
Location: Hendersonville, NC zone 7
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Lots of good advice above. BER happens when a plant is stressed and there are small green fruit - healthy fruit development needs calcium. Most growing mixes have plenty - but the plant stress causes calcium to leave developing fruit, causing the issue - onset of BER. Visibly wilting plants on a hot day with green fruit on the plant will lead to BER. I had very little BER this year in my bales and containers - but also watered essentially daily when it didn't rain.
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