. Diseases of wheat, oats, barley, and rye. Grain. BOEWE: DISEASES OF WHEAT, OATS, BARLEY, AND RYE 45 fungus has many physiologic races. Wheat and barley are most susceptible to attack, rye is slightly susceptible, and oats and corn are almost immune. Many wild grasses are susceptible. Wheat may become diseased at any stage of development; most infection above the crown occurs after the plants head. Because this disease is obscure in nature and difficult of certain diagnosis, its importance has been greatly underesti- mated in Illinois, as in most other states. Adequate data on its distributio
. Diseases of wheat, oats, barley, and rye. Grain. BOEWE: DISEASES OF WHEAT, OATS, BARLEY, AND RYE 45 fungus has many physiologic races. Wheat and barley are most susceptible to attack, rye is slightly susceptible, and oats and corn are almost immune. Many wild grasses are susceptible. Wheat may become diseased at any stage of development; most infection above the crown occurs after the plants head. Because this disease is obscure in nature and difficult of certain diagnosis, its importance has been greatly underesti- mated in Illinois, as in most other states. Adequate data on its distribution, prevalence from year to year, and destruc- tiveness are lacking, but it is undoubtedly one of the im- portant forms of crown rot and root rot so frequently and seri- Fig. 13.—Spot blotch on wheat. This disease attacks wheat plants in all stages of growth. It blights seedlings, rots roots and crowns, kills young tillers, discol- ors the bases and joints of stems, and makes spots on leaves. Plants infected by it appear dwarfed as they approach matu- rity and they also as- sume a reddish-brown tint which serves, with other symptoms, to identify the disease. Apparently resident in the soil, this dis- ease typically attacks the plants in circular patches a few feet to several rods in diam- eter, doing most dam- age to plants in the centers of the patches and injuring least the plants near the edges of the patches. (Pho- tograph by A. C. El- dredge.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Boewe, Gideon Herman, 1895-. [Urbana]
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Keywords: ., bookcentury1900, bookcolle, bookpublisherurbana, booksubjectgrain
