. Annual report - Entomological Society of Ontario. Entomological Society of Ontario; Insect pests; Insects. SURFACE Fig. 3.—Graph to show the moth emergence in the fall, and early and late spring burial experiments, based on 300 larvae in each test. Just digging the soil to a depth of 4 to 5 inches was less than one-half as effective as where cultivation followed the turning of the soil. Glancing at the figures secured from the regular orchard cultivation tests we see some encouraging results. In the two years, 1,417 larvae were placed and only five moths were removed from the cages, thus the
. Annual report - Entomological Society of Ontario. Entomological Society of Ontario; Insect pests; Insects. SURFACE Fig. 3.—Graph to show the moth emergence in the fall, and early and late spring burial experiments, based on 300 larvae in each test. Just digging the soil to a depth of 4 to 5 inches was less than one-half as effective as where cultivation followed the turning of the soil. Glancing at the figures secured from the regular orchard cultivation tests we see some encouraging results. In the two years, 1,417 larvae were placed and only five moths were removed from the cages, thus the mortality was per cent. It might be well to state that this tractor discing would spread and scatter the material beyond the confines of these small cages, and in this way some records may have been Fig. 4.—Large cage used in the cultivation experiment 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 Entomological Society of Ontario; Ontario. Department of Agriculture. Toronto, The Society
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsects, bookyear1872
