Check the listing for details. Yield Booster (16 oz.) Helps Stop Blossom End Rot Corrects Calcium Deficiencies. Condition: New. Listed at 21.95 USD. Yield Booster (16 oz) 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. Please read and follow label directions. Active Ingredient: Calcium - 10% Ferti-Lome Yield Booster was developed to help stop Blossom-end Rot of Tomatoes. Blossom-end Rot can be recognized by the dark grey black-sunken area onthe blossom-end (bottom) of Tomatoes. Blossom-end Rot can be small or cover almost half the fruit and will decrease your Tomato yield. Ferti-Lome Yield Booster can also be used to help your Tomatoes and other plants correct known Calcium deficiencies. Mix 2 tablespoons (1 fluid ounce) 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 sprays. Ferti-Lome Yield Booster is compatible with many other Insecticides and Fungicides and maybe combined with your Insect and Disease fighting sprays. Mix 1 tablespoon Ferti-Lome Yield Booster with 1 gallon of water during bloom and apply as a foliar spray to help increase yields. Do not use greater than the recommended amounts or injury to Plants may result. It is a violation of Federal law to use this product in a manner inconsistent with its labeling. The Label is The Law !This product cannot be used for any purpose that it is not labeled for!I will follow all applicable federal and state laws and regulations regarding the sale of the pesticideI won?t accept bids from, sell to, or ship to states in which the pesticide is not registered as a general-use productI will follow all applicable federal and state laws and regulations regarding the sale of the pesticide I won?t accept bids from, sell to, or ship to states in which the pesticide is not registered as a general-use product