. Annual report. Entomological Society of Ontario; Insect pests; Insects. 88 REPORT OF THE ENTOMOLOGICAL DAILY RAINFALL INCHES. 4 5 4 7 8 9 10 || li 13 14 15 16 17 Ift 19 20 21 22. 2) 24 2S 26 27 29 29 30 I JUNE 1951 1 3 4 5 W 7 6 9 10 II 12. 13 * IS JULY Fig. 2. Effect of DDT applications on populations of TychiUS picil'OStvis in alsike clover. Norfolk County, 1951. Weather data are shown. Dotted portions of the curves indicate that no sweeps were taken on those days. SEED YIEED IN RELATION TO DDT SPRAYS. - Shortly before harvesting began, a number* of square yard samples (Table II) were take
. Annual report. Entomological Society of Ontario; Insect pests; Insects. 88 REPORT OF THE ENTOMOLOGICAL DAILY RAINFALL INCHES. 4 5 4 7 8 9 10 || li 13 14 15 16 17 Ift 19 20 21 22. 2) 24 2S 26 27 29 29 30 I JUNE 1951 1 3 4 5 W 7 6 9 10 II 12. 13 * IS JULY Fig. 2. Effect of DDT applications on populations of TychiUS picil'OStvis in alsike clover. Norfolk County, 1951. Weather data are shown. Dotted portions of the curves indicate that no sweeps were taken on those days. SEED YIEED IN RELATION TO DDT SPRAYS. - Shortly before harvesting began, a number* of square yard samples (Table II) were taken at random from each plot by the Field Husbandry Department. The entire plants were cut just above ground level, bagged, dried, and Table II NO. OF SAMPLES TAKEN FOR THEORETICAL SEED YIELD CALCULATIONS Place Year Size of plots No. of quadrats Keith 1950 .25 ac. 6 Porter 1950 ac. 10 ac. Check Keith 1951 ac. 15 ac. Check Fall is 1951 .6 ac. 10 Mowat 1951 ac. 10 * Considered adequate by the Field Husbandry Dept. for areas 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. Dept. of Agriculture. Toronto, The Society
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsects, bookyear1872
