![]() ![]() This develops into a gray, fuzzy growth typical of downy mildews of other crops. Later, vein-bounded patches of dark spore production can be seen on the lower surface. ![]() The first symptom is a pale yellowing of the upper surface of the leaves, quite similar to sunscald. Basil downy mildew on leaf’s upper surface Relatively recently it spread to Italy in 2004, France in 2005, United States (Florida) in 2007 and by 2009 had made its way to New England. Pest/disease identification and lifecycle, most common damage symptoms and crops affected:ĭowny mildew of basil was first reported in Uganda back in 1930. Pest: Basil Downy Mildew (Peronospora belbahrii) PLoS ONE 12(9): e0184319.This resource is offered as part of MOFGA’s Pest Reports Fact Sheet Series (2017) A first linkage map and downy mildew resistance QTL discovery for sweet basil ( Ocimum basilicum) facilitated by double digestion restriction site associated DNA sequencing (ddRADseq). Pyne R, Honig J, Vaiciunas J, Koroch A, Wyenandt C, Bonos S, et al.
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