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Phytophthora Root and Crown Rot on Apples in Bulgaria
Phytophthora is a genus of Oomycota responsible for some of the most serious diseases
with great economic impact (Judelson and Blanco, 2005). While 54 species were found in
the 20th century (Erwin and Ribeiro, 1996) ...
Powdery Mildew on Spinach (Spinacia oleracea L.)
Symptoms resembling powdery mildew appeared on spinach crops during April and
May in 2007. Infected plants have suppressed growth, smaller and degenerated young
leaves. The affected leaves become yellowish and wilt in a ...