Helps stop blossom end rot on Tomatoes and setting of fruit and correcting calcium deficiencies. Blossom end rot can be recognized by the dark grey/ black sunken area on the blossom end (bottom of Tomatoes). Blossom end rot can be small or can cover almost half of the fruit and will decrease Tomato yield. Application Rate: Mix 2 tablespoons with 1 gallon of water to stop blossom end rot. Apply as a thorough cover spray to foliage and fruit. Use at weekly intervals for at least 3 sprayings. To help set fruit: Mix 1 tablespoon with 1 gallon of water during bloom to help set fruit and increase yield.