Tomato Plants - Knowledgebase Question

Las Vegas, Ne
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Question by jjacobsaz2
June 5, 2009
In late April I planted an Early Girl tomatoe in a large patio pot. It received indirect sunlight all day on the patio. I watered it morning and due to the wind in Las Vegas again lightly in late afternoon. All of the many yellow flowers have died and the lower folage is turning brown. It did get 2 tomatoes on the plant shortly after I planted it but both appear to be rotting on the bottom. HELP


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Answer from NGA
June 5, 2009
What you describe sounds like blossom end rot, a physiological condition caused by a lack of calcium at the growing tip of the fruit. While your soil may have adequate calcium, fluctuations in soil moisture content from dry to wet really increase the incidence of blossom end rot. It is especially bad on the early fruit each summer and in sandy soils. The damage occurs as cells die at the tip of the fruit. In time (and as the fruit grows) the spots enlarge and turn black. So, by the time you see it, the damage actually has already occurred some time back. Remedies include: having a soil test to make sure calcium levels are adequate, adding organic matter to a sandy soil to increase its moisture holding capacity, keeping plants evenly moist, especially during the development of the first fruits (mulch helps maintain soil moisture), and spraying plants with a Blossom End Rot spray (contains calcium) which can usually be purchased from your local garden center. Don't wait until you see it to spray with Blossom End Rot spray. If you have an annual problem with blossom end rot, treat when the fruit reaches marble size. However, usually the other cultural practices will control the problem without the need for spraying. The tomatoes are still edible. Just cut away the affected portion.

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