THE FUSARIUM YELLOWS DISEASE OF GLADIOLUS.

This article presents information on the two major types of disease of gladiolus caused by Fusaria. In the Fusarium rot of stored corms which is attributed to Fusarium oxysporum, small reddish-brown, water-soaked spots may develop on the sides and lower halves of the corm. During the storage period these spots increase in size and become more or less circular, rather sunken, ridged lesions, up to an inch in diameter. When slightly infected corms are planted, they give rise to weak plants which may die before flowering. The Fusarium Yellows disease, which is attributed to Fusarium orthoceras, is characterized by the yellowing of the foliage and collapse of the flower spike during the growing season.