Diseases Affecting Young Cotton

Fusarium spp.

13;10;
13;10;13;10;

Fusarium

13;10;
13;10;Fusarium can develop at soil temperatures around 70° F and symptoms will decline at temperatures at 82° F. Fusarium can infect young cotton seedlings, while symptoms such as stunting, yellowing and loss of leaves may not occur until later in the season. Immediate signs of severe seedling infection include: cotyledon and leaf wilting and dropping off the plant, leaving a bare stem.​​

13;10;13;10;

Rhizoctonia spp.

13;10;
13;10;13;10;

Rhizoctonia

13;10;
13;10;May occur when soil temperatures are 70-80° F. A good indicator of an infected seedling is the presence of dry reddish-brown lesions girdling the stem (soreshin) at the soil line. If the seedling survives, the stem will be weakened and plant growth may be stunted. Discoloration is usually limited to the outside layer of the main root and hypocotyls, while the infected stems will remain dry and firm. Sandblasting can make a seedling more susceptible to infection.

13;10;13;10;

This article is from the Cotton Management Guide, a publication with year-round advice on managing high-yielding cotton. Download the Deltapine Cotton Management Guide now or sign up for new content to be delivered to your email each month.​​