. Annual report - Entomological Society of Ontario. Entomological Society of Ontario; Insect pests; Insects. ENTOMOLOGICAL SOCIETY 53. Map. Relative infestations are based upon the total amounts of prepared bait actually used during the season. In the municipalities indicated as having very heavy infestations more than 4,000 pounds of prepared bait were used per section of taxable land. Where heavy infestations occurred from 2,000 pounds to 4,000 pounds of bait were used, where moderate infestations occurred from 500 to 2,000 pounds of bait were used and where light infestations are indicated
. Annual report - Entomological Society of Ontario. Entomological Society of Ontario; Insect pests; Insects. ENTOMOLOGICAL SOCIETY 53. Map. Relative infestations are based upon the total amounts of prepared bait actually used during the season. In the municipalities indicated as having very heavy infestations more than 4,000 pounds of prepared bait were used per section of taxable land. Where heavy infestations occurred from 2,000 pounds to 4,000 pounds of bait were used, where moderate infestations occurred from 500 to 2,000 pounds of bait were used and where light infestations are indicated less than 500 pounds of prepared bait were used per section of taxable land during 1933. spreading bait on the land. Previous to 1933 there was no such restriction. Although this may have reduced somewhat the amount of bait used in certain cases, it was appli- cable throughout the province and comparisons will be affected only as between 1932 and 1933 and not for various municipalities in 1932 or 1933. The species of grasshoppers involved in the 1933 outbreak were the same as those occurring in injurious numbers in 1932. The organization set up to supply and distribute poisoned bait was the same in 1933 as in 1932. The following is the formula for the bait used in 1933: Bran or malt sprouts 50 lbs. Sawdust (bulk equal to bran) approx 2y2 bushels Liquid sodium arsenite 1 quart* Water 10 to 12 gallons * The one quart of liquid sodium arsenite contained 2 lbs of AS2O3. 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
