- Author: Rachael Freeman Long
- Author: Sarah Light
Published on: June 11, 2018
Last year, we saw a number of disorders in sunflower that were mainly related to a heat stress by parental line interaction. Despite extensive testing by the USDA and UC ANR for pathogens in many affected sunflower plants, no causal agents were found. Overall, symptoms were found only on the female lines and were fairly uniform in plants in the heat-stress affected fields, which is another clue that the cause was abiotic or environmental, not due to a disease problem. A disease would be more random and affect both male and female lines (unless one line has resistance to the disease).
One disorder observed was foamy head rot of sunflower, a malady that produces copious white frothy material that exudes from the leaf...
Focus Area:
Agriculture
Focus Area Tags: Agriculture
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