Calcium availability or uptake is not the problem. The clue to the real underlying problem is in your first statement: "plants are growing fast." Fast growth causes the plant to divert calcium from the growing fruit to the growing plant. When fast growth slows, BER goes away. Even if you do nothing, add nothing. Often people swear by some remedy they tried, thinking they had solved the problem, when it would have resolved itself if they had done nothing.
__________________
"Red meat is NOT bad for you. Now blue-green meat, THAT'S bad for you!"
-- Tommy Smothers
|