questions: asking about fertilizer dose in potato 
 answers: recommend him to apply urea 19 kg per bigha, phosphorus 45 kg per bigha, potash 12 kg per bigha. apply urea in two split and apply 9.5 kg urea during field preparation and other 9.5 kg urea apply  30 to 50 days after planting. all dose of phosphorus and potash apply during field preparation.