. Bulletin of the Department of Agriculture. Agriculture. GRAPE-BERRY MOTH IN NORTHERN OHIO. 23 number of larvae were thus removed occurred to the writer, but an estimate of one-third would be conservative. This had a decided influence on the number of overwintering pupse and subsequent infestation in 1918. Table XXVI.âPercentage of cocooning frevioua to and during grape harvest, Sandusky, Ohio, 1917. Date. Number of cocoons. To Oct 8 1,291 1,944 2,174 2,309 Oct 8-18 To Oct 18 To Nov. 10 Percent- age of total. Previous to lieginniiig of Concord harvest. During Concord harvest Previou
. Bulletin of the Department of Agriculture. Agriculture. GRAPE-BERRY MOTH IN NORTHERN OHIO. 23 number of larvae were thus removed occurred to the writer, but an estimate of one-third would be conservative. This had a decided influence on the number of overwintering pupse and subsequent infestation in 1918. Table XXVI.âPercentage of cocooning frevioua to and during grape harvest, Sandusky, Ohio, 1917. Date. Number of cocoons. To Oct 8 1,291 1,944 2,174 2,309 Oct 8-18 To Oct 18 To Nov. 10 Percent- age of total. Previous to lieginniiig of Concord harvest. During Concord harvest Previous to end of Concord harvest Pre\'ious to beginning of Catawba harvest Previous to end of Catawba harvest Fig. 3.âDiagram sho\nng summary of the life-history data for 1917 of the grape-berry moth, indicate actual records and ' " ' ' ' ^ â - - jolid lines PIG. ij.â-diagram sno^^ing summary oi tne lue-mstory aata lor lyiv oi tne grape-oerry motn. soua ime: indicate actual records and dotted lines indicate occurrence of stages as obscr^^cd in the field and com puted from the average length of period. SUMMARY OF SEASONAL-HISTORY STUDIES IN 1917. A summary of the data presented in the preceding tables is shown graphically in figure 3, It should be kept in mind in applying this diagram to future seasons that the season of 1917 was later than the average for northern Ohio and was unseasonably wet and cold throughout the 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 Department : Supt. of Docs. , Govt. Print. Off.
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