Ask-a-Dave's-Gardener: Problem Avocado Tree, 3 by Paul213

Paul213 wrote:
Hi!
I\'m a little worried since I think my tree is getting burnt, or maybe something like fungus/bacterial is going on since I recently planted a 5g tree here in LA. I applied this IV organics 3-1 product to help with that, but it seems like it\'s getting burnt and splits down the middle of leaves/holes, etc. I did notice above the grafted area it looked like a notch into the main stem that appears to have dried up. Any ideas here before it\'s too late?