Apan_weekly_Issue_1_page8 - (:unkn) unknown (My University, 2026)
This agricultural document by P. L. Board provides a detailed scientific explanation of tobacco cultivation, processing, and grading techniques. It discusses two main species of tobacco, Nicotiana tabacum and Nicotiana rustica and highlights their chemical properties, particularly nicotine content (2–8 %). The article outlines systematic methods of nursery preparation, transplanting, fertilizer application, irrigation, and leaf curing, emphasizing how temperature control (85 °F–160 °F) and air circulation determine the quality and flavour of tobacco leaves used in cigarettes.