Bacterial Leaf Streak diseaseCaused by: Xanthomonas vasicola pv. vasculorum
Problem Category: Bacterial Disease
Symptoms: The infected leaves initially shows narrow stripes between the veins. The initial symptoms are generally confused with gray leaf spot disease. But the lesions from bacteria appear brown, orange, and/or yellow when you infected leaves are back-lit. Also in Bacterial Leaf Streak disease the lesions show slightly wavy edges when compared to the smooth, linear lesion margins of gray leaf spot.
Comments: The bacteria causes gumming disease on sugarcane in several part of the world. First reported on corn in South Africa. Currently this disease is reported in Nebraska (Aug. 26, 2016), Colorado, Illinois, Iowa, and Kansas on corn.
Management: Use healthy and disease free seeds. Remove the infected plant debris and burn them. Follow crop rotation.
Control: spray 2 times 10% Cowdung+Asafoetida solution in 10 days interval.