Diagrammatic scale to assess downy mildew severity in melon
نویسنده
چکیده
Hortic. bras., v. 27, n. 1, jan.-mar. 2009 The Northeast region of Brazil responds for nearly 95% of the national melon (Cucumis melo L.) production. Located at this region, States of Rio Grande do Norte and Ceará supply respectively 55 and 28% of the total melon harvested in Brazil (FNP, 2007). The expansion of the area used for melon production in this region, in addition to an intensive year-round growing system, contribute to rise the intensity of several diseases, amongst them downy mildew, caused by Pseudoperonospora cubensis (Berk. & Curt.) Rost. (Santos et al., 2000). Downy mildew is one of the most important melon diseases in Northeast Brazil. It causes up to 60% reduction in fruit production (Cardoso et al., 2002a) and 49% in the content of soluble solids (Cardoso et al., 2002b). MICHEREFF SJ; NORONHA MA; LIMA GSA; ALBERT ICL; MELO EA; GUSMÃO LO. 2009. Diagrammatic scale to assess downy mildew severity in melon. Horticultura Brasileira 27: 076-079.
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