If transplanting into fresh, quality soil. fertilizers may not be needed for the first 3 weeks or so.
Transplantng and feeding immediately is a no-no...........wait at least 5 days for the plant to settle and recover from the transplant shock if using anything other than good quality soil.
Soaking with seaweed (kelp) extract before transplanting, then watering the fresh transplant with seaweed extract afterwards can help minimize any transplant shock.