Tomato Stem Rot

Question

Further to my previous inquiry re the disease in my tomatoes. It was suggested that it was blossom end rot. Attached is a photo showing it in the early phase of the problem starting at the stem end, never getting near the blossom end. The fruit falls before it gets near the blossom end

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Answer 1

Indeed. This can happen anywhere on the tomato, including where the stems meets the fruit. Just most commonly, then end. Your soil test will tell you what you need to know. If your soil never has a chance to dry out, then there could be added risk of bacterial infections. The only way to know for sure is to test your soil. Look for high pH, low calcium, too much ammonium, too much potassium, too much magnesium, and even salts left over in the soil. All will interfere with calcium uptake.