Search Results

19 results

  1. CORESTA Meeting, Agronomy/Phytopathology, Montreux,1997, POST15 (non présenté)

    Evaluation of a rapid plant test as guide in fertilizer recommendation for tobacco

    BONOAN R.R.; RAQUEL J.V.; RAGANIT R.J.
    National Tobacco Administration, Quezon City, Philippines.
    A plant test for determining the nitrogen (N) fertilizer requirement of tobacco was developed and evaluated in laboratory, pot and field experiments. Sampling procedures for measuring the nitrate-N in petiole and stem sap were examined. In particular, the ...
  2. CORESTA Meeting, Agronomy/Phytopathology, Montreux,1997, POST16 (adjourned)

    A passive solar energy system for tobacco curing and food drying

    CASTRO R.C.; FRANCO S.S.; SAMBO C.S.; ABROGENA N.Q.; LAYAOEN H.L.
    National Tobacco Administration, Ilocos Norte - Philippines.
    The NTA Multi-Commodity Solar Dryer (MCSD) is a passive dryer designed based on the principle of appropriate technology. It consists of a drying chamber whose roof and wall serve as solar collectors. Clear polyethylene plastic was used as glazing. An ...
  3. Bull. Spec. CORESTA Symposium, Kallithea, 1990, p. 131, A22, ISSN.0525-6240

    Improved clay-walled natural convection flue-curing barn

    FRANCO S.S.; WOODS J.L.
    National Tobacco Administration, Ilocos Norte - Philippines and University of Newcastle upon Tyne, UK
    The analysis of the heat and mass balance of a natural convection flue-curing barn was undertaken. The investigation provided indicators of the system's energy flows at different barn modifications and varying ambient conditions at different stages ...
  4. Bull. Spec. CORESTA Symposium, Kallithea, 1990, p. 174, P17, ISSN.0525-6240

    Management of tobacco mosaic virus at small tobacco farms in northern Luzon, Philippines

    TRUONG H.X.; OBIEN A.S.; CARASI R.C.; TRUONG L.R.
    National Tobacco Administration (NTA), Crop Protection Division, Main Research Center (MRC), Batac Ilocos Norte, Philippines 2906.
    Tobacco mosaic virus (TMV) was detected in tobacco seed samples from storage and from plants artificially inoculated with the virus at 105 days after transplanting (DAT). Nicotiana glutinosa L. was used as the assay host. Contaminated seeds were found to ...
  5. Bull. Spec. CORESTA Symposium, Winston-Salem, 1982, p. 52, A11, ISSN.0525-6240

    Morpho-histological development of the lateral bud of tobacco and its control by chemicals

    LEMANA J.F.; RIMANDO T.J.; OBIEN S.R.
    Philippine Tobacco Research & Training Center, Mariano Marcos State University, Batac, Ilocos Norte, Philippines
    A study was conduced on Virginia tobacco var. MRS-3 to characterize the morpho-histological changes in the axillary bud prior to and on the imposition of apical dominance by the apex or by exogenously applied phytohormones (IAA and ABA) after decapitation ...
  6. Bull. Spec. CORESTA Symposium, Winston-Salem, 1982, p. 68, P10, ISSN.0525-6240

    Survey and identification of viruses naturally occurring on tobacco (Nicotiana tabacum L.) in major tobacco growing provinces of the Philippines

    REVELLAME L.A.; BENIGNO D.A.; OBIEN S.R.
    Philippine Tobacco Research & Training Center, Mariano Marcos State University, Batac, Ilocos Norte, Philippines
    Four different viruses were isolated from tobacco plants collected from eight major tobacco-growing provinces of the Philippines (Ilocos Norte, Ilocos Sur, Abra, and La Union) during the 1979-1980 crop season and from Pangasinan, Cagayan, Isabela, ...
  7. Bull. Spec. CORESTA Congress, Manila, 1980, p. 114, T08, ISSN.0525-6240

    Waste product utilization of tobacco : Tobacco midribs _ the best medium for the propagation of various fungi

    DE RIVERA T.P.E.; TOLENTINO P.
    Philippine Tobacco Administration, Quezon City, Philippines
    Tobacco midribs, compared with other materials, have been found to be the best medium for the propagation of two species of cellulose decomposing fungi (Chaetomium globosum and Trichoderma spp.) and three species of edible fungi or mushrooms (Pleurotos ...