What Causes This Disease In My Tomatoes

Question

Only happens to some tomatoes either partially ripened or still green. Fruit with this will drop be they green or partly ripened. None of the fruit gets to fully ripen. Plants are growing in an 8m tunnel house. Watered via ground level drip feed system for 5 minutes per day early morning.

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Answer 1

Yes. It usually appears at the end of the fruit, but if you get a good look, you will notice that it can start at the top, as well. Anywhere from the blossom tip, to the blossoms fruit end. It will be considered blossom end rot. Testing your soil will always be the first thing to consider doing.

Answer 2

This looks like the beginning of blossom end rot. This is caused by too little calcium in the soil. But there several things that could cause calcium deficiency. Test your soil, first. This will give you an idea of what is going on. This article will offer some information:

https://www.gardeningknowhow.com/edible/vegetables/tomato/tomato-blossom-rot.htm

This is an article they offers quite a bit of information on growing tomatoes:

https://www.gardeningknowhow.com/edible/vegetables/tomato/tips-for-growing-tomatoes.htm

Answer 3

Thank you for your prompt answer. The problem is never at the blossom end, always at the stem end. Does not happen to all fruit- probably 10 - 15%.
Will try upping the soils calcium. Thanks