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Wilt
Wilt (Fusarium lini (Bolley) Snyd. & Hansen) symptoms may appear in the flax plant at all stages of development. The roots of seedlings may be completely rotted and the plants "damped-off". When older plants are attacked, they remain upright but may be stunted or may wilt rapidly and die. The lower leaves may turn yellow and drop off. The main stem may be killed and new, apparently healthy branches develop from the base. Sometimes only a part of the stem is affected; for example, a dead brown streak may extend up one side in sharp contrast with adjacent green tissue. Often premature ripening is the only visible indication of disease when an infection is light of late.
Although wilt is spread from one field to another on infected seed or flax refuse, the fungus is so prevalent in most soils of the flax-growing areas of the North Central states that only wilt-resistant varieties can be grown successfully. Some varieties are highly wilt resistant, while others have only moderate resistance.
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