Tob. Sci., 1982, 26-18, p. 66-69, ISSN. 0082-4523
Effect of plant spacings, topping heights, nitrogen rates and varieties of tobacco on nicotine yield and concentration
Oxford Tobacco Research Laboratory, ARS-USDA, Oxford, NC, USA; North Carolina State University, Raleigh, NC, USA; Station Superintendent, Oxford Tobacco Research Station, North Carolina Department of Agriculture, Oxford, NC, USA
Experiments were conducted in 1974, 75 and 76 to determine the effect of cultural practices and varieties on nicotine concentration in tobacco leaves and the yield of nicotine per hectare. The tests were modified each year after appraisal of results...