These articles are very informative and can also provide case studies on the benefits of in-furrow fungicides. Growers may have questions about their need to use the at-plant fungicides beyond the commercial seed treatments already on the seed. Seedling diseases are most severe when soils are cool and wet. Warmer soils produce rapid germination and vigorous early growth, usually enabling cotton seedlings to escape serious infection. It is easily identified by the brown lesions that girdle the hypocotyl near the soil line that may cause the seedling to fall over.
Pythium is another common pathogen across the Cotton Belt.
Although I am sure that it is present in the state, I haven't seen it and believe it to be of minor importance. Pythium causes seed and root rots and preemergence damping off. It is more environmentally sensitive than Rhizoctonia and probably will only be a factor in soils that are wet and during periods of prolonged cool. Also, Fusarium has been associated with seedling diseases, but it is of minor importance. However, I would probably recommend lower rather than higher rates of the fungicide.