Proceedings of the Indiana Academy of Science Volume 1 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1892 Excerpt: ...Four of these now give indications of having the disease; the leaves are crinkled, the under side being dull and mottled in appearance. Bacteria were found in the leaves and petioles. Considerable interest attaches to this disease from its reduction of the sugar content of the root, and its prevalence throughout the state. The study of the subject was begun too late to estimate the loss by the disease, but as was already mentioned, diseased plants were found among all the beets grown on the station grounds, which included eight varieties for the past year--Red Top sugar, Silesian sugar, Imperial sugar, Dippe's Vilmorin, Simon LeGrand improved white, Dippe's Kleiwanzleben, Flormond Desprez richest, and Bultean Desprez richest. Roots were sent to the station for analysis from twenty-seven different places in the state and from nineteen of these some of the roots were diseased. This is not a fair estimate of the prevalence of the disease, however, as the tendency is, in sending beets for analysis, to choose the best looking and most nearly perfect ones, and the proportion of infected specimens included is necessarily much short of the actual average. There were more of the Kleiwanzleben and Vilmorin beets sent than of the other varieties, and these gave respectively 12.9 per cent, and 12.7 per cent, diseased roots. Counting all the varieties there were 434 beets s- nt, among which were 12.1 per cent, diseased. In analyzing for the sugar content one set gave 13.3 per cent for good beets, 11.9 per cent, for beets showing a trace of the disease; another set gave 10.2 per cent, for good ones, 7 per cent, for diseased ones; while still another set, that Prof. Huston thinks gives the fairest estimate of loss, gave 10.3 per cent, for good beets, and 5.7 per cent...