The growth and development of tobacco root system was studied in pot experiment conducted with the application of fixed proportions of different nitrogen forms and various rotted sesame cake fertilizerThe results showed that the activity and dry matter weight of root system were enhanced with application of 40 percent rotted sesame cake fertilizer; Also, this treatment contributed to the harmony of root top ratioFurthermore, application of 40 percent rotted sesame cake fertilizer decreased nicotine conten...