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Đang hiển thị 1 - 5 của tổng số 274 kết quả
- Training Guide on Integrated Pest Management in Tobacco(2016) M Bateman, E Chernoh, K Holmes, J Grunder, M Grossrieder, Y Colmenarez, D Badendreier, M Faheem, M MulaaThis e-book has been made possible through funding from Philip Morris International. Their support enables field technicians and tobacco farmers to freely access information on integrated pest management and appropriate use of Crop Protection Agents (CPAs), thus helping them to lose less to pests and diseases, while also minimizing negative impacts on human health and the environment.
- The Effects of Fertilizer on Burley Tobacco, Nicotiana tabacum(2014-08) Joshua ArmentroutBurley tobacco is an important agriculture crop in the southern United States and is a major contributor to farm incomes where it is grown. The effectiveness of tobacco fertilization application is an important factor in overall quality and yield. Fertilizer is a major input cost in tobacco production. Macronutrients nitrogen, phosphorus, and potassium play key roles in tobacco yield and quality. Research shows, however, that reduced amounts of these nutrients can result in similar quality and yield, while reducing overall cost. Side banding versus the more common practice of broadcasting can help reduce the input cost and also help to improve the quality and yield of the crop. This research took place near Jonesborough, Tennessee during the 2013 growing season. Three different fertilizer methods, side banding, broadcasting, and broadcasting plus side banding, were applied to the research plots to observe effects on height and yield. The research proved that there was a significant difference in plant height and yield. The side banding method produced a taller stalk as well as higher yields when compared to the broadcasting method. However, more nitrogen was applied in the side banding method and this likely affected yields as well. Therefore, it was difficult to determine whether method of fertilizer application alone increased tobacco yields in this experiment. Even so, the side banding method did produce higher yields, equivalent quality, and was more cost effective than the other two methods in this study.
- The Role of Bacteria and Certain Chemical Compounds in the Fermentation of Cigar-Leaf Tobacco(1954-08) Bohdan Russell ChomanThe fermentation of cigar-leaf tobacco is a carefully controlled industrial process and has been the subject of many investigation during the past 100 years. It has been learned that two of the chemical change of greatest significance in fermentation are the decrease in nicotine content and increase niacin content of the leaf. The account for these and other chemical changes that take place, three theories have been advanced. Some workers have maintained that the chemical reactions taking place in the cigar-leaf fermentation are not catalyzed by enzymes. Others have taken the position that the enzymes of microorganisms are responsible for the major chemical reactions. The third theory, developed at the turn of the century, attributes to the enzymes of the tobacco plant the major role in fermentation process. Each of these theories has received support in the literature of the last few years.
- Kỹ thuật trồng trọt, thu hoạch, sơ chế và phân cấp thuốc lá vàng sấy lò(Nhà xuất bản Nông nghiệp, 2002) TS. Trần Đăng Kiên