Search Results

103 results

  1. Tobacco Science & Technology, 2011, 11, p. 76-78., ISSN.1002-0861

    Orientation of Aphidius gifuensis ashemed to tobacco and prey combination affected by insecticides

    SONG XU-MING(1); ZHANG YUE(2); QU AI-JUN(2)
    1. Anqiu Branch of Shandong Weifang Tobacco Co. Ltd., Aniqiu 262100, Shandong, P.R. China; 2. Plant Protection College, Shandong Agricultural University, Taian 271000, Shandong, P.R. China
    The orientation of Aphidius gifuensis Ashemed to tobacco and prey combinations affected by insecticides was investigated with Y-tube olfactometer. The results showed that normal tobacco leaves did not produce plant volatiles attractive to A. gifuensis, ...
  2. Tobacco Science & Technology, 2009, 11, p. 21-5, ISSN.1002-0861

    Application of predictive and quasi-predictive PI control algorithms in strips redryer

    REN ZHENG-YUN; HAN BAI-HENG; WANG XIAO-FEI
    Donghua University, Dept. of Automation, Shanghai, China
    It is hard to keep the temperature of the drying section, the moisture contents in tobacco in cooling section and ordering section stable by traditional PID control algorithm due to the drying in the strips redryer is a process of large thermal inertia ...
  3. CORESTA Congress, Shanghai, 2008, APPOST 26

    Studies on the resistance risk to metalaxyl and its control in Phytophthora nicotianae var. nicotianae

    WANG Kaiyun; XU Xueming; DUAN Haiming; LIN Caihua; ZHANG Wencheng
    Shandong Agricultural University, College of Plant Protection, Taian, Shandong, China
    In this study, 11 metalaxyl-resistant strains were gained from sensitive strain in Phytophthora nicotianae var. nicotianae by the method of metalaxyl inducement. The hereditary stabilities and levels of the resistance for all the resistant strains were ...
  4. Tobacco Science & Technology, 2008, 2, p. 57-60, ISSN.1002-0861

    Screening of Bacillus B102 and its antagonism against tobacco brown-spot disease

    LI AN-NA; JIN YING; LU PENG
    Shandong Agricultural University, College of Plant Protection, Taian, Shandong, China
    157 bacteria strains were isolated from tobacco field soil between roots and around root system in Shandong Province. 7 strains of antagonistic bacterium against Alternaria alternata were screened. Among them, strain B102 had the strongest antagonistic ...
  5. Tobacco Science & Technology, 2005, 1, p. 44-6, ISSN.1002-0861

    Influence of Colletotrichum capsici f. nicotianae toxin on cell membrane permeability of tobacco

    FANG BAO-HAI; ZHANG GUANG-MIN; CHI CHANG-FENG
    Shandong Agricultural University, College of Plant Protection, Taian, Shandong, China
    The influence of Colletotrichum capsici f. nicotianae toxin on cell membrane permeability and chlorophyll content of tobacco was experimented in 2002. The results showed that the cell membrane permeability of tobacco could be increased by toxin ...
  6. CORESTA Congress, Paris, 2006, APOST 07

    Genetic improvement of Nicotiana tabacum by applying remote hybridization and biotechnological methods

    NIKOVA V.; IANCHEVA A.M.; VLADOVA R.; PANDEVA R.; PETKOVA A.
    Bulgarian Academy of Science, Institute of Genetics, Sofia, Bulgaria.
    Wild Nicotiana species possess a high potential of useful features. Interspecific hybridization is a very effective method for the introducing of desired characters into tobacco and achieving crop improvement. Its successful realization is limited due to ...
  7. CORESTA Congress, Paris, 2006, APOST 24

    Color and aroma of tobacco: a facilitated approach for their objective evaluation in Oriental tobaccos and for cultivar classification within Virginia and Oriental tobacco types

    DAGNON S.; EDREVA A.; VLADOVSKA A.
    Tobacco and Tobacco Products Institutes, Plovdiv, Bulgaria; D. Kostov Inst. of Genetics, Bulgarian Academy of Sciences, Sofia, Bulgaria.
    In the routine practice the evaluation of colour and smoke aroma, major qualitative characteristics of tobacco, is mainly based on organoleptic estimates by expert panels, with this suffering from subjectivity, high costs and health hazards. We propose a ...
  8. CORESTA Meeting, Agronomy/Phytopathology, Santa Cruz do Sul, 2005, APOST 24

    Hybrid seed production in tobacco by using male sterile plants

    NIKOVA V.; NIKOLOV E.; IANCHEVA A.; PANDEVA R.; PETKOVA A.
    Institute of Genetics, Sofia, Bulgaria; Tobacco and Tobacco Products Institute, Plovdiv, Bulgaria; Reg. Ctre for Scientific Investig. & Prod. of Tobacco, Haskovo, Bulgaria.
    The introduction of hybrid crop varieties has enabled spectacular growth in productivity owing to hybrid vigor and increased uniformity. To produce hybrid seeds, a pollination control system is required to prevent unwanted self-pollination. New ...
  9. CORESTA Congress, Kyoto, 2004, APOST 04

    A new Romanian flue-cured cultivar : Virginia 177

    CIUPERCA A.; PAUNESCU M.; PAUNESCU A.D.; BOLD I.; DUMITRASCU P.
    Central Research Station for Tobacco Culture and Industrialization, Bucharest, Romania.
    The improvement of the chemical and industrial quality of Virginia tobacco in Romania represents the main objective for those involved in tobacco research, production and industrialization. The most important way to achieve this objective is the change of ...