. Fig. 19.—Sclerotial fungus that causes southern root rot. (From Ext. Cir. 118.) out in great abundance on the leaves, mostly on the lower surface. In bad cases, the plant is greatly injured and the crop ruined. This fungus disease, caused by Uromyces phaseoli var. iypica, is common in the state but causes the most serious damage on winter string beans, particularly the Kentucky Wonder variety, grown in frostless districts of southern California. Dusting or spraying with sulfur (p. 74) at the first appearance of rust is of some value in control but has never proved entirely satisfac- tory. Se
. Fig. 19.—Sclerotial fungus that causes southern root rot. (From Ext. Cir. 118.) out in great abundance on the leaves, mostly on the lower surface. In bad cases, the plant is greatly injured and the crop ruined. This fungus disease, caused by Uromyces phaseoli var. iypica, is common in the state but causes the most serious damage on winter string beans, particularly the Kentucky Wonder variety, grown in frostless districts of southern California. Dusting or spraying with sulfur (p. 74) at the first appearance of rust is of some value in control but has never proved entirely satisfac- tory. Seedsmen now offer rust-resistant strains of the Kentucky Wonder and other bean varieties. This is the most satisfactory method of control. Southern Root Rot.—The plants attacked by this disease die prema-
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Keywords: ., bookcentury1900, bookcollectionamerica, booksubjectplantdiseases
