why do my tomatoes have black spots on the bottom
You can t wait to pick your first red ripe tomatoes of the season. As the tomato grows larger you notice your tomatoes have dark spots on bottom. It quickly turns from a water soaked patch to a dark colored lesion. Some of your tomatoes have a small patch, some larger, what the heck is it? What is That Dark Spot on Bottom of Tomato? A gardeners worst fear when growing tomatoes has struck your garden. That dark spot on the bottom of your tomatoes is blossom rot. Blossom rot is a disorder that can affect tomatoes, peppers, squash and other fruiting vegetables. What Causes It? The portion that was once the flower becomes the bottom of the vegetable fruit. The disorder is neither a pest nor a disease per say but a lack of calcium that plant has received. Calcium is absorbed by the roots and stem, the plant and fruit use it to grow. A lack of calcium to other nutrients in your soil or the lack of calcium uptake from the soil is to blame. 80% of all blossom rot is due to extreme fluctuations in soil moisture, such as too little water or too much, can impact the amount of calcium your plant is receiving. One of the best ways to prevent blossom rot is start before you plant your tomatoes plants. P
you want a of 6. 5 for optimal growth. P After planting maintain a regular water schedule to prevent soil dry out.
P Keep the soil moist but not wet. Now, your saying but I already have it. P I need answers on what I can do about it. P Sometimes it is a quick fix and sometimes it isnt. 1. ) Start by removing the damaged fruits. This will immediately stop the plant from using energy on rotten fruit. 2. ) Then test your soil s, see where your level is. PIf that was the problem than you have a difficult task ahead of you, you will need to replenish your soil. This doesnt happen overnight. Add items like, (Amazon links) powdered milk and Tums tablets. Think back to when you first planted your tomato plants and throughout the growing season. Was it extremely wet for a period of time and quickly went to dry? Has it been extremely dry and you have been negligent with your watering schedule? P If so, those are easy fixes. Remove the fruit and maintain a regular watering schedule. Set up a and P(Amazon Links) if need be. P P So, the next fruit your plant bears will be damaged free. Blossom End Rot: How to Identify, Treat, and Prevent It Blossom end rot is a common tomato problem associated with growing conditions. It affects tomato fruit. Stems and leaves show no symptoms. What does blossom end rot (BER) look like? The bottom side of the tomato (either a green or ripened one) develops a sunken, leathery dark brown or black spot.
Gardeners most often notice BER when fruit is 1/3 to 1/2 its full size. What causes it? A calcium imbalance. A tomatoвs cells need calcium to grow. Calcium acts like glue in cells в it binds them together. Tomatoes absorb calcium through water. But calcium isnвt fast-moving. If a tomato grows quickly, or if other conditions slow water absorption, then calcium doesnвt have enough time to travel through the whole piece of fruit. Plants canвt absorb enough calcium в whether or not thereвs enough in the soil. A tomatoвs tissues break down and leave the telltale damage on its bottom. When does blossom end rot affect plants? when early to mid-season fruit develops, because soil is cooler and plants have fewer roots during fruit set, and tomatoes need calcium to bind together cells when season starts out wet and turns dry during fruit set, just as tomatoes need calcium the most when plants are grown in cold, heavy soil which prevents roots from developing strong when soil has excessive salts, which reduce calcium availability How can you control and treat blossom end rot? Prevention is the most method of control (see below). Blossom end rot cannot be reversed on a tomato once itвs set in, but you can take these steps to slow and halt it.
Preserve affected plants by applying calcium immediately. You can use specifically developed to treat, prevent, and slow blossom end rot in tomatoes Follow package directions for application. Or mix 1 tablespoon calcium chloride (sold commercially for other uses as de-icing salt or ) in one gallon of water. Spray 2-3 times a week until blossom end rot is under control. Apply early in the morning when temperatures are cool. (Check out a good selection of. ) Pick affected fruit to reduce stress on the plant and allow it to direct its energy to other tomatoes. Cut out spots on harvested fruit and eat remainder. Blossom end rot does not make the rest of the tomato inedible. However, if tomatoes have been infected by fungi or mold, discard them. How can you prevent blossom end rot? There are lots of ways you can take precautions for next year's crop! Carefully harden off young seedlings gradually to protect them from extreme temperatures and conditions. Select a planting area with good drainage. Avoid setting out plants too early in the season, which can expose them to cold temperatures and cold soil. Allow soil to warm before planting. and organic matter into the soil before planting, so that the plantвs root system has a better chance to grow strong and deep.
Add quick-release lime when planting tomatoes so that thereвs plenty of calcium in the soil and itвs absorbed quickly. Tomatoes grow best when the soil pH is about 6. 5. Keep your tomatoesв water supply even throughout the season so that calcium uptake is regular. Tomatoes need 1-3 inches of water a week. They perform best when watered deeply a couple of times a week rather than superficially every day. once established to maintain moisture levels. Once blossoms emerge, apply that is high in phosphorus (the second number in a fertilizerвs three-number series), like 4-12-4 or 5-20-5. Too much nitrogen (the first number) or large amounts of fresh manure can prevent calcium uptake. Cultivate carefully around tomato plants to avoid damaging root systems. Try not to dig more than an inch or two deep around plants. are more prone to BER because they set fruit in a short period of time. Indeterminates and semi-determinates set fruit throughout the season, making it easier for plants to regulate calcium intake. BER also affects eggplant, peppers, squash, and watermelon. Tomato problems from growing conditions Tomato pests Tomato diseases More tomato problems
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