Fertilizer applicator for rice transplanter, comprising a fertilizer tank, an air tank, a tube attache to the fertilizer tank, fertilizer collection unit attached to the tube, flexible hose and a nozzle, an electronic controller, at least two control valves wherein the fertilizer is applied at the time of transplanting in accordance with the depth of the seedling and a means to synchronize the speed of the fertilizer applicator with that of the transplanter such that on receiving a communication from said means the electronic controller sends a message to the control valves which in turn releases appropriate amount of fertilizer to be applied at the field at the time of transplanting in the proximity of seedling