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  1. Bull. Spec. CORESTA Symposium, Taormina, 1986, p. 49, A08, ISSN.0525-6240

    Further research on the influence of weeding and earthing up combined with chemical weed control on Bright tobacco yield

    COVARELLI G.
    Università degli Studi di Perugia, Perugia, Italy
    Two experimental trials were carried out during 1982-83 in the Tiber valley (central Italy) on clayey-loamy soil (32% clay, 26% loam, 42% sand) in order to evaluate the influence of weeding and of earthing up in addition to chemical herbicides on Bright ...