Tob. Sci., 1980, 24-46, p. 162-165, ISSN. 0082-4523
An assessment system for estimating the distribution and incidence of tobacco viruses in North Carolina
North Carolina State University and North Carolina Department of Agriculture, Raleigh, North Carolina USA
A system for assessing the distribution and incidence of tobacco viruses is given. Essentially, one in 1 × 105 plants in several areas of tobacco production in North Carolina comprises the sample and the data are extrapolated to the total crop to...