The Tropical Fruit Forum

Malhar,
deficiencies of Zinc, Manganese, Copper, and Potassium.

Nicely detailed soil report.  Manganese is low in relation to amount of Iron--- should be similar amounts.

Plant looks good.

Nuraxi,

Looks complicated.

I recommend that you get a soil analysis and a leaf tissue analysis, testing for all the known plant nutrients, in each sample, including Sodium (Na) and Chloride.

Seedlings of pure sugar-apple, pure custard-apple, pure ilama, or pure soursop, are usually just as good as, or almost as good as, the mother tree.  Some indeed are worse.  Or take longer to fruit.  [pure = non-hybridized]

Seeds from hybrids can be wildly different.

Perhaps hydrogen peroxide, diluted to 0.25%.  One and a half to two gallons of mix poured onto one square foot of the soil.  Weekly, until corrected.

Example:  11 pints of water (same as 1 gallon + 1 quart + 1/2 quart) plus 1 pint of drugstore 3% hydrogen peroxide.

If you buy a concentrate somewhere, remember that the concentrate can cause immediate blindness if it splashes in your eyes,
severe skin burns, or holes in your cotton clothes.

Did you add potting soil or compost to the planting hole?

McRysh,
Looks good enough.

Maybe it has some urea in the soil mix or in the fertilizer--- and no Nickel, so can't make urease enzyme.

DM,
What kind of soil were those mangos planted in?

I don't know of any variety that doesn't get MBBS sometimes.

Number one, yes.  Also known as Australian Beach-Cherry.

I put pruned (and cut into straight sections) branches (less than 1 inch diameter of wood) and fallen leaves on the ground under fruit trees of any kind.

No decomposable ammendment is likely to improve planting holes for mangos--- way likelier to sicken.

Spiders or spider-mites or webworms.