. Pig. 15. Estimated percentage reduction in yield from leaf rust of barley, 1919. Scabiblight) caused by Gibberella saubinetti 1 (Mont,) Sacc. Scat (blight) of barley was reported from a number of the Upper L:ississippi Valley, Ohio Valley and nearby states in l^ig, in contrast to very'scattering reports heretofore. The earliest report of this disease from collaborators seems to be from lietraSiva in l^jOy, In 1^0^ it was reported from Iowa; in I915 from Minnesota; in I918 from Iowa, Minnesota and V/isconsin; in l^l^ from North and South DaKota, Minnesota, V-isconsin, loWa, Missouri, Illinois
. Pig. 15. Estimated percentage reduction in yield from leaf rust of barley, 1919. Scabiblight) caused by Gibberella saubinetti 1 (Mont,) Sacc. Scat (blight) of barley was reported from a number of the Upper L:ississippi Valley, Ohio Valley and nearby states in l^ig, in contrast to very'scattering reports heretofore. The earliest report of this disease from collaborators seems to be from lietraSiva in l^jOy, In 1^0^ it was reported from Iowa; in I915 from Minnesota; in I918 from Iowa, Minnesota and V/isconsin; in l^l^ from North and South DaKota, Minnesota, V-isconsin, loWa, Missouri, Illinois, Indiana, Ohio, Pennsylvania, Kentucky and Tennessee, In Iowa and South Dakota the disease was reported as rather severe on barley on the average, and causing an estimated loss of about 3 ~ In Tiissouri, Kentuoiqr and Tennessee losses were appreciable although slight, estimated at 1%. In a number of cases rather high percentages of scabbed barley heads were noted. Individual fields in Kentucky and Tennessee were observed where 50 and 40% of the heads were scabbed, respectively. In Iv'innesota the highest percentage noted was J,0%', in Iowa 20%; in Missouri 10%. On the whole, the general infection area on barley coincides in general with that where the wheat scab epidemic was severe, hence it is not surprising that the disease on barley should have been found to occur more extensively in I919 than heretofore. As to relations of these high percentages of scab on barley to previous crops on those fields, it is particularly interesting to note that"where these highest percentages of scab in barley occurred in Minnesota, Iowa and Missouri,
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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1920, bookyear1920
