4 weeks ago, i pugged my mango tree (kent) which was in ground since august 2015.
Here it was before the pugging. leggy, skinny and high (starting at 5 ft) scaffold branches. Last year I had trouble with stunted growth on them so I drenched it with a mix 5% zinc 5% manganese three times since last autumn.
Last February, Two weeks after a hard cold spell (the coldest of the winter) the leaves showed multiple damage (I think a cocktail of freeze damage, salt burn and may be fungal disease, but I am not sure).
Anyway, at the beginning of march, when I noticed buds breaking all over the scaffold branches, I decided to pug it to a stump at 4 ft high in order to promote healthier and more sturdy scaffold branches.
Here it is now with multiple flush points all over the trunk (above the graft point).
My question is the following : knowing the state of the old (removed) leaves, is there a risk for the new growth to suffer from fungal diseases ? If so should I apply as prevention a systemic fungicide or sulphur or whatever (i prefer not to, but if i have to i will do it because i don't want to gamble with the scaffold branches)? If so at which state of development can I spray the fungicide?
Weather information to assess the fungal risk : yesterday we had rain, and next week we are expecting 3 or 4 rainy days, the temps are between min 53 F and max 70 F.