I have few young mango seedlings that I had moved to the ground way too early. My soil is calcareous and very alkaline. I have been trying several combinations of fertilizers but I apparently made things worse.
This time I'm interested in finding out the deficiencies that cause new buds to cease growing and freeze. Giving a balanced fertilizer (18-18-18 with chelated micros didn't help).
Looking at the nutrients responsible for cell generation/elongation made me focus on Boron/Calcium/P maybe/Zn?
Could it be that some seedlings just won't respond well in very alkaline soils?
The soil as the test shows is mostly calcium but I would take that with a grain of salt, as multiple fertilizer applications/irrigations and the layers of vegetable compost must have changed a lot since then.
Can you think of anything else please? More precisely the nutrients that are crucial for cell generation and elongation. Also the ones that are more likely to suffer when overfeeding NPK.
I find this one very tricky as it seems to be an extra silent deficiency where symptoms are hardly visible.
Let me know your thoughts please. Thanks