RESUMO -Um experimento para avaliação da competição relativa de espécies de plantas daninhas, em relação a cultivares de soja de ciclos vegetativo precoce and Embrapa-62 (median cycle), in Londrina, Parana, Brazil in 1998/99. Four
Palavras-chave: Euphorbia heterophylla, Brachiaria plantaginea, Ipomoea grandifolia, Senna obtusifolia.
ABSTRACT -An experiment was carried out to evaluate the relative weed species competition with two soybean cultivars of different maturation times,
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