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  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 ...