questions: asking for the fertilizer dose of lemon in the 4th year stage in terms of per plant per year. 
 answers: 20 kg, 600 gram, 400 gram and 580 gram of fym, urea, ssp and mop respectively has been suggested per plant per year and the mixture of which is to be applied in two split doses. one in february/march and the other dose in october november.also suggested that the fertilizer has to be applied leaving 15-45cm space around the tree trunk and well beyond the canopy spread and to be incorporated into the soil by light hoeing.