. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 96 DECIDUOUS FRUIT INSECTS AND INSECTICIDES. After the loose bark had been scrapetl from the trunks of 16 trees, burlap bands were placed around the main trunk in the usual man- ner about 3 feet from the ground. On 5 of the trees bands were also placed on the main branches, so as to obtain records as to the relative number of larvtB ascending the trees from the ground from wind-fallen fruit, as compared with the number of larvae descending from fruit on the trees. The trees, with one exce})tion, consisted of wint
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 96 DECIDUOUS FRUIT INSECTS AND INSECTICIDES. After the loose bark had been scrapetl from the trunks of 16 trees, burlap bands were placed around the main trunk in the usual man- ner about 3 feet from the ground. On 5 of the trees bands were also placed on the main branches, so as to obtain records as to the relative number of larvtB ascending the trees from the ground from wind-fallen fruit, as compared with the number of larvae descending from fruit on the trees. The trees, with one exce})tion, consisted of winter varie- ties, 10 of which were Golden Russet, 1 Northern Spy, 2 Greening, and 3 nndetermined. Since only 16 trees of the whole orchard were banded, it is believed that the comparatively small number of first- "TTT n. 15 lb II Ji 2i 28 Jl 3 b <\ 12 15 13 21 Zh n iO Z 5 8 II ^k 17 20 23 2«. t1 2 5 6 II !â . Ij ?.C Z3 Zi, Z1 I 10 13 lb II NOV. Fig. 21.âBand-record curve of 1909, at North East, Pa. (Original.) brood larvae which were removed had no influence upon the number of larvae of the second brood. With the appearance of the first larvae, July 13, the banded trees were examined every three days throughout the season until November 13. (See fig. 21.) In comparing the number of larvae collected from the upper and the lower bands, it will be noted (Table XXXIII) that 53 per cent were taken from the lower bands and 47 per cent from the upper bands. These figures are of interest as bearing on the effectiveness of gathering windfalls. A summarv of the band records is given in Table 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. Bureau of Entomology. Washington : G. P. O.
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