. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 6 BULLETIN 1046, U. S. DEPARTMENT OF AGRICULTURE. In 1914 only two urediniospore sprays were applied, one on April 19 and the other on May 23. Neither of these sprays was followed by any noticeable rust infection. Canvas covers were not used. In 1915 urediniospore sprays were given on April 20, 21, 27, and 29, and on May 7, 10, 20, 22, and 31. Inoculated seedhngs were trans- planted into the soil in vacant rows, which were left for that purpose, this being the first attempt to use the infection-center method. Canvas co
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 6 BULLETIN 1046, U. S. DEPARTMENT OF AGRICULTURE. In 1914 only two urediniospore sprays were applied, one on April 19 and the other on May 23. Neither of these sprays was followed by any noticeable rust infection. Canvas covers were not used. In 1915 urediniospore sprays were given on April 20, 21, 27, and 29, and on May 7, 10, 20, 22, and 31. Inoculated seedhngs were trans- planted into the soil in vacant rows, which were left for that purpose, this being the first attempt to use the infection-center method. Canvas covers were used and a severe epidemic was caused, as shown by the data on rust infection. In 1916 urediniospore sprays were given on April 6, 13, 14, 20, 25, 26, and 29, and on May 1, 4, 16, 19, and 27. Canvas covers were used. In addition to these sprays the infection-center method was employed. A severe epidemic resulted. In 1917 sprays of urediniospores were given on May 23 and 29, and on June 6. A few hand inoculations in the field were made in the spring, but the efforts were mostly directed toward establishing in-. 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 United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
Size: 1829px × 1366px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauth, bookcentury1900, bookdecade1910, booksubjectagriculture
