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Overview of Plant Disease Diagnoses for 2013

In 2013 we received 132 samples from Benton county. The most prevalent issues were on cucurbits. During March we received samples of winter squash that had various cracks and lesions on the fruit likely caused by mechanical injury that allowed fruit rotting pathogens to penetrate. During August through October cucumbers and winter squash plants were received that were sufffering from wilt, dieback, stem necrosis, and root rot. Many of these were found to have species of Pythium and Fusarium associated with the roots and Plectosporium with the crowns.

In August and September we saw lots of late blight on tomato.

From grapevines we received several samples from vines of poor vigor that had Petri disease or young vine decline.