Cheflara, I've gardened for 34 years and have probably done more reading on this "hobby" than anything else in my life. Among the contributing factors to BER are uneven watering, fluctuations in temperature, and lack of calcium in the tomatoes themselves. (Adding some to soil rarely helps, cause it's very plentiful in most soils.) There is are some simple things you can do to help reduce the chances of BER, though as some have mentioned, it usually goes away by itself as the season progresses. One thing is to put a good 3 or 4 inches of grass clippings on top of the containers. Having been to New York City many times, I know there are areas where grass clipings aren't easy to come by. But using them has so many benefits, it would be worth a little trouble to get some, like taking some boxes along the next time you visit the burbs? The clippings will: 1. Keep the soil moister, reducing "uneven" water conditions. 2, Keep the soil cooler, up to 50 degreees on the surface on hot days. 3. Provide all the nutrients your tomatoes need. Chemical fertilzers simply are not as good, plus they cost money. The grass clippings provide "a balanced meal," not too much of one nutrient and not enough of another. The chances your tomatoes will get the calcium they need will be better. If your plants are getting all-day sun, you might also think of leaning something against the pots to shade them from the hot afternoon sun. Remember, only the plants need sun, not the pots. Some kinds of materials can get hot enough to cook roots touching the inside of the pots. This also helps reduce fluctuations in temperature. And finally, if you don't have saucers or something under the pots to catch water, it would be very beneficial to get some. What happens with potted plants is that the soil dries out and shrinks. That creates a space between the soil and the sides of the pot. You water, see water running out the bottom, and think the soil has been wet. But the majority of the root ball is still bone dry. If you have a saucer under the pots, water collects there and then is slowly drawn up into the rootball by capillary action. I've been suggesting for years that drainage holes NOT be put on the bottom of containers. They should be about 2 to 4 inches up the sides, depending on the size pot. And lo and behold, a friend of mine who lives in another city recently bought a potted dwarf lemon tree. She e-mailed me and asked why the drainage holes Were Up the Sides? It's possible someone came up with this independently, but I think I have "dibs" on it? All of the above will just make General Conditions for your maters better. A healhtier plant is less likely to have problems of any kind.

More lime will not help because the calcium would take too long to become available. BER is not from lack of calcium, but from lack of mobile calcium in the plant. Here's a thread I like. Scroll down the thread to Al Tapla's explaination. http://forums2.gardenweb.com/forums/load/contain/msg0514510630172.html This year I had som BER on my only SIP, and I threw everything but the kitchen sink at it including; calcium nitrate in the reservior, calcium nitrate foliar spray, gypsum in the reservior, and Texas Tomato Food in the reservior, which has extra calcium in it. My BER stopped (for now) fairly quickly, and I only lost about 10 Red Brandywines. After everything I did, still not sure what stopped it. Might have stopped by itself anyway, which is usually the case.

Growing Tomatoes FAQ: What is blossom-end rot? How can I prevent it? Blossom-end rot is a disorder of tomato, squash, pepper, and all other fruiting vegetables. You notice that a dry sunken decay has developed on the blossom end (opposite the stem) of many fruit, especially the first fruit of the season. This is not a pest, parasite or disease process but is a physiological problem caused by a low level of calcium in the fruit itself. Symptoms BER, or blossom-end rot usually begins as a small "water-soaked looking" area at the blossom end of the fruit while still green. As the lesion develops, it enlarges, becomes sunken and turns tan to dark brown to black and leathery. In severe cases, it may completely cover the lower half of the fruit, becoming flat or concave, often resulting in complete destruction of the infected fruit. Cause Calcium is required in relatively large concentrations for normal cell growth. When a rapidly growing fruit is deprived of calcium, the tissues break down, leaving the characteristic lesion at the blossom end. Blossom-end rot develops when the fruit's demand for calcium exceeds the supply in the soil. This may result from low calcium levels in the soil, drought stress, excessive soil moisture, and/or fluctuations due to rain or overwatering . These conditions reduce the uptake and movement of calcium into the plant, or rapid, vegetative growth due to excessive nitrogen fertilization. Management Adequate preparation of the garden bed prior to planting is the key to preventing BER. Insure adequately draining soil in the bed by adding needed ammendments, maintain the soil pH around 6.5 - a pH out of this range limits the uptake of calcium. Lime (unless the soil is already alkaline), composted manures or bone meal will supply calcium but take time to work so must be applied prior to planting. Excess ammonial types of nitrogen in the soil can reduce calcium uptake as can a depleted level of phosphorus. After planting, avoid deep cultivation that can damage the plant roots, use mulch to help stabilize soil moisture levels and help avoid drought stress, avoid overwatering as plants generally need about one inch of moisture per week from rain or irrigation for proper growth and development. Once the problem develops, quick fixes are difficult. Stabilize the moisture level as much as possible, feeding with manure or compost tea is recommended by many, foliar applications of calcium are of questionable value according to research because of poor absorption and movement to fruit where it is needed but many have reported that foliar application of magnesium (epsom salts) can effect added calcium uptake. Other various suggestions consist of powdered milk, crushed egg shells tea, bone meal tea, Tums tablets, etc. but prevention is the key. Some recommend removing affected fruit from to reduce stress in the plant. BER should not be confused with fruit abortion or inadequate pollination although the symptoms may appear similar. The onset of BER occurs only after the fruit is well on it's way to development while insufficient pollination problems terminate the fruit while still quite small. Here is a link that might be useful: BER FAQ

In your picture, notice the lower right one where I see lesions in circles. Knowing that I'm going to give you two suggestions, but since you said nothing about any other symptoms such as leaf lesions, lesions on stems, these are just suggestions, and maybe you can share with us if there are any other symptoms we should know about. First is Buckeye Rot, linked to at the very bottom and if you read some of the links you'll also see pictures other than those shown with this Google link. The second suggestion is Late Blight ( P. infestans), and I don't if it's present in KS. http://www.longislandhort.cornell.edu/vegpath/photos/lateblight_tomato.htm The link above is one of the best I know for Late Blight. But the fungal disease Grey Mold can also mimic LB, so you might was to take a look at that as well since Grey Mold is present almost everywhere if the weather conditions are right. And it really would help if there are other symptoms we should know about. Carolyn Here is a link that might be useful: Buckeye Rot