In cucurbit crops, most of the viruses known to cause economically important diseases are transmitted by insects, and many induce foliar yellowing symptoms. These are known as “yellowing viruses.” Most yellowing viruses are transmitted by whiteflies, although at least one is transmitted by aphids.
Ontario Vegetable crop reports for July 30th, 2020
“Examine low lying or poorly drained areas noting any wilted or stunted plants, and look for lesions. Phytophthora usually presents as a foliar blight or a crown rot in zucchini, squash, and pumpkin, so look for dark lesions on the crown. In cucumbers and melons Phytophthora usually causes fruit and stem lesions so look for water soaked lesions with white spores developing on the fruit.”
Ontario Vegetable Crop Report for July 23rd, 2020
“Downy mildew continues to circulate in many parts of Southwestern Ontario, and in American states around the Great Lakes.”
Cucurbit Downy Mildew epidemic updates June 20 to July,20 2020 | ipmPIPE
CucCAP Team 2020 Annual Meeting and Report
An overview of accomplishments including genomic tools & databases, GBS collections & core populations, disease resistant cucurbit breeding lines, publications and presentations
