. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 134 THE REPORT OF THE No. 19 corn late into the rotation. He recommends a short rotation in which rye is sown on the sod, then seeding to clover the following spring, followed by the small grains, and this followed ag'ain by com or potatoes. If such a method, or a similar one, be adopted in gardens, very few com- plaints would be heard regarding attacks of white grubs. When white grubs are known to infest lawns, kerosene emulsion may be applied with advant- age, if followed by copious wa
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 134 THE REPORT OF THE No. 19 corn late into the rotation. He recommends a short rotation in which rye is sown on the sod, then seeding to clover the following spring, followed by the small grains, and this followed ag'ain by com or potatoes. If such a method, or a similar one, be adopted in gardens, very few com- plaints would be heard regarding attacks of white grubs. When white grubs are known to infest lawns, kerosene emulsion may be applied with advant- age, if followed by copious watering. Fruit Insects. The Peach-Tree Borer, (Sanninoidea exitiosa Say (Fig. 73) is quite prevalent in many of the Niagara peach orchards, as the brown gummy masses about the bases of the trees testify. These exudations are composed of a mixture of earth, larval excrement, and borings, and sometimes they extend entirely around the tree. The borer is the grub-like caterpillar of a beautiful moth, and works in the inner bark of the lower trunk or a large root, excavating a tunnel. The life-history is not yet well enough known to the peach growers. The moths appear from July to September, and the females deposit their eggs on. Fig. 73. Peach-tree Borer ; 1, female inoth ; 2 male moth. Fig. 74. Datana Dioth. the bark of the trunk near the ground soon after their emergence. The larva hatches in si week or so and begins to bore into the trunk, feeding and forming its burrow until winter sets in, when it hibernates. In May the larva begins again to feed, and reaches full size in June or early July. It leaves its burrow then, and forms a dirty brown cocoon at the base of the tree. As a pupa within this cocoon, it remains about three or four weeks, when the moth emerges. The old-fashioned method of "digging out" or "worming" the borer is perhaps the best that has been devised. The best time to do this work is in spring and fall, and it must be thoroughly done on all
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