Question: asking about the control of blossom end rot of tomato
Answer: spraying foliage and stems with anhydrous calcium chloride (4 pounds per 100 gallons of water per acre) four times on a weekly schedule beginning when the second forms, or when symptoms first appear. calcium chloride solutions are also available under several trade names for small scale garden use. application in the same tank with fungicides and/or insecticides is suggested. this helps to rapidly place calcium directly where it is needed in the fruits