1. Beitr. Tabakforsch. Int./Contrib. Tob. Research, 2001, 19-4, p. 189-203., ISSN.0173-783X

    A mathematical scheme for calculating flows and pressure drops in lit and unlit cigarettes

    DWYER R.W.; CHEN P.; WASYK R.D.
    Philip Morris USA, Research Center, Richmond, VA, USA
    A computational methodology is presented for evaluating the flows and pressure drops in both lit and unlit cigarettes. The flows and pressure drops across rows of tipping-paper perforations are considered explicitly, as are the locations and relative ...
  2. Beitr. Tabakforsch. Int./Contrib. Tob. Research, 2001, 19-5, p. 237-44., ISSN.0173-783X

    Determination of the transfer efficiency of d-nicotine to mainstream smoke

    PERFETTI T.A.; GORDON B.M.; COLEMAN W.M. III
    R.J. Reynolds Tobacco Company, Winston Salem, NC, USA
    Experiments were conducted to independently determine the mainstream smoke transfer efficiency of d-nicotine and l-nicotine. Two types of cigarettes (University of Kentucky 2R1 reference cigarette and a cigarette prepared from reconstituted sheet material ...
  3. Beitr. Tabakforsch. Int./Contrib. Tob. Research, 2001, 19-6, p. 297-307., ISSN.0173-783X

    The heat of combustion of tobacco and carbon oxide formation

    NORMAN A.B.; PERFETTI T.A.; PERFETTI P.F.
    R.J. Reynolds Tobacco Company, Winston Salem, NC, USA
    Recent studies demonstrated a relationship between mass burn rates of straight-grade cigarettes and heats of combustion of the tobacco materials. In the present work, relationships between measured heats of combustion and elemental composition of the ...
  4. CORESTA Meeting, Agronomy/Phytopathology, Cape Town, 2001, A 12 (adjourned)

    Effects of time and rate of systemic suckercide application on growth, quality, and chemistry of upper-stalk flue-cured tobacco

    PEEDIN G.F.; HARRELL N.E.; FISHER L.R.; PRIEST J.A.
    North Carolina State University, Dept. of Crop Science, Raleigh, NC, USA
    The systemic suckercide, maleic hydrazide (MH), is the most widely used pesticide on flue-cured and burley tobacco produced in the USA. The dinitroanilines (DNAs), flumetralin and butralin, are also systemic suckercides that have become more widely used ...
  5. CORESTA Meeting, Agronomy/Phytopathology, Cape Town, 2001, A 14 (adjourned)

    Physiological behavior of sulfentrazone and clomazone in flue-cured tobacco (Nicotiana Tabacum) - Part 2

    WILCUT J.W.; FISHER L.R.; SMITH W.D.; PRICE A.J.
    North Carolina State University, Dept. of Crop Science, Raleigh, NC, USA
    Sulfentrazone was labeled for use on flue-cured tobacco in North Carolina in 1997. Sulfentrazone controls many broadleaf weeds in tobacco including Ipomoea spp. as well as sedges (Cyperus rotundus and esculentus). No other herbicide labeled for tobacco ...
  6. CORESTA Meeting, Agronomy/Phytopathology, Cape Town, 2001, AP 07 (adjourned)

    Use of high pressure water removes tobacco flowers (topping) and prevents the mechanical spread of bacterial wilt

    FORTNUM B.A.; CHRISTENBURY G.
    Clemson University, Pee Dee REC, Florence SC, USA
    Bacterial wilt (Ralstonia solanacearum) is an extremely damaging disease of flue cured tobacco in North and South Carolina. It is generally believed that infection of tobacco in the field occurs through the root system. The rapid spread of bacterial wilt ...
  7. CORESTA Meeting, Agronomy/Phytopathology, Cape Town, 2001, AP 09 (adjourned)

    Development of a vigor index for greenhouse tobacco seed

    CLARKE J.J.; REED T.D.
    Virginia Tech, Southern Piedmont Agricultural Research and Extension Center, Blackstone, VA, USA
    Tobacco seed performance is traditionally measured as 14-day germination under controlled laboratory conditions. However, seed lots with equal test germination may exhibit substantial differences in uniformity of early seedling growth and spiral root ...
  8. CORESTA Meeting, Agronomy/Phytopathology, Cape Town, 2001, AP 10 (adjourned)

    Factors impacting useable transplant yield from the greenhouse float system

    REED T.D.; CLARKE J.J.
    Virginia Tech, Southern Piedmont Agricultural Research and Extension Center, Blackstone, VA, USA
    Typical commercial tobacco seed have a test germination of 90 percent although the actual percentage of useable transplants produced may be substantially greater or less than that value. The objective of this research was to study production variables ...