Do you mean mycorrhizae? If so, you have purchased a soil inoculant, which needs to be applied within the soil upon or prior to planting. Wouldn't do any harm applied topically, but not any good, either.

Just read that you are growing peppers. Can you help me please ? I am growing them for the first time and need to know if we have to pinch out the tops,or take off any side shoots etc.
I am used to growing tomatoes,and other veg,but not the peppers. They are now eight and nine inches tall,looking healthy and strong,and in pots in my unheated greenhouse.
Weather very hot today and think I should be planting them outdoors.
Will you kindly advise ?
Vera.