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Dr. Austin Hagan, Professor and Extension Specialist with Auburn University and the Alabama Cooperative Extension System recently provided information on seedling diseases of cotton. His webinar was part of the March 14 session of the 2017 Alabama Agronomic Crops Webinar Series.
Cotton seedling diseases are most common when seed germination or seedling emergence is delayed. Delayed emergence is more likely in cool, wet weather; in low organic matter soils; when there is poor seed to soil contact; when seeds are planted at the wrong depth; when soils are compacted; or when seedlings are under stress from herbicides or other factors. Common seedling diseases and available in-furrow fungicides are discussed. He provides a risk assessment tool, which includes factors such as rotation, seedling disease history, weather, seed quality, tillage, and seeding rate, to help decide when to use an in-furrow fungicide to supplement seed fungicide treatments. The majority of in-furrow fungicides target seed rot and seedling disease caused by
Rhizoctonia fungi, though Priaxor also has activity against
Fusarium. Velum Total, when applied in-furrow for nematode control in cotton, will suppress
Fusarium and possibly
Rhizoctonia-incited diseases. Learn more by watching his webinar:
Webinars in the Alabama Agronomic Crops Series are presented live at 9 AM on the second Tuesday of each month. A schedule for all the 2017 Webinars, connection information, and links to the recordings of previous webinars are posted on alabamacrops.com.
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