. Fig. 40.—Take-all, or foot rot, on wheat. (Courtesy of the New South Wales Department of Agriculture; from Bui. 511.) is due to the fact that two different types of spores are produced (tig. 38), The plants may be badly injured and killed. In most places this rust fun- gus, Puccinia graminis, passes one stage of its development on the com- mon barberry, and the eradication of such bushes helps to control wheat rust. In California, this host is not attacked, and the rust lives the year round on wheat, barley, and certain grasses. No method of field treatment for wheat rust has been known unti
. Fig. 40.—Take-all, or foot rot, on wheat. (Courtesy of the New South Wales Department of Agriculture; from Bui. 511.) is due to the fact that two different types of spores are produced (tig. 38), The plants may be badly injured and killed. In most places this rust fun- gus, Puccinia graminis, passes one stage of its development on the com- mon barberry, and the eradication of such bushes helps to control wheat rust. In California, this host is not attacked, and the rust lives the year round on wheat, barley, and certain grasses. No method of field treatment for wheat rust has been known until recently, when dusting the fields with sulfur by means of airplane has shown some promise; but even this does not appear economically feasible. The first applications of sulfur should be made just as soon as pustules of rust appear and must be repeated at 7- to 10-day intervals, using 15 to 20 pounds of dusting sulfur per acre for each application. Seed treat- ment has no effect on rusts.
Size: 2582px × 1935px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionamerica, booksubjectplantdiseases
