Okay, so I was reading up on BER and foliar feeding. Not because I am having a problem, but because a friend of mine (a woman of the young age of about 80, but I'm not about to ask) said it works better than feeding in the ground. I figured that was BS, but didn't want to call her on it. I do respect my elders. In fact, I was under the impression that foliar feeding is practically useless and a waste of money. However, I did want to see scientific evidence one way or another. Okay, I wanted to see scientific evidence that I was right, but anyway. . . I don't think I am. I'm fairly certain she was wrong about it being better, but I think I definitely underestimated the effectiveness of foliar fertilization.
I found articles online that support foliar fertilization from Purdue and the USDA. I'm only posting one from Purdue
, though. You can google "foliar fertilization USDA" or insert whatever group you wish in place of USDA to get scholarly articles. There was also an interesting article on foliar feeding in wikipedia. I try to avoid using it as a source, though. I just use it as a spring board.
So, have any of you had success with foliar feeding? I mean, noticeable success?
Could it be more effective to foliar feed large plants like Brandywine tomatoes with micronutrients to make sure the entire plant gets them?
Since calcium deficiency is mostly a delivery issue and rarely has to do with a lack of it in the nutrient solution - rendering the purchase of CalMag as a reservoir supplement essentially a waste of money - would it be most effective to deliver that calcium via foliar feeding to prevent BER?
If so, how much should be applied and at what concentration?