. Ontario Sessional Papers, 1907, , though num-erous, does no appreciable damage in the summer and autumn, as the plantsare then so large and vigorous that the attack is unnoticed. 1906 ENTOMOLOGICAL SOCIETY. 49 The root and stalk borers (Gortyna nitela—fig. 11—and cataphracta)were much complained of this year. The former was found in potato stems,and the latter was reported by Mr. C. W. Nash, of Toronto, as attackingall kinds of perennial plants in gardens, and also corn and tomatoes. Itis difficult to prescribe any remedy for these insects, as they work out ofsight and their presen
. Ontario Sessional Papers, 1907, , though num-erous, does no appreciable damage in the summer and autumn, as the plantsare then so large and vigorous that the attack is unnoticed. 1906 ENTOMOLOGICAL SOCIETY. 49 The root and stalk borers (Gortyna nitela—fig. 11—and cataphracta)were much complained of this year. The former was found in potato stems,and the latter was reported by Mr. C. W. Nash, of Toronto, as attackingall kinds of perennial plants in gardens, and also corn and tomatoes. Itis difficult to prescribe any remedy for these insects, as they work out ofsight and their presence is not suspected till they have seriously injuredthe plant. Attacks by various species of Plant-lice (Aphis) were complained of indifferent parts of the Province; on Brussells-sprouts, for instance, at Strat-ford ; on turnips at Grenfel; on hops at Shelburne; on sweet-peas at Pene-tanguishene; on honeysuckle at Toronto, etc. The ordinary remedies with kerosene emulsion or whale-oil soap wash have usually Fig. 11.—The Root and Stalk Borer (Gortyna nitrla). a. female moth ;6, half-PTOwn larva ; c, mature larva in Injured stalk ; rf, lateral view ofabdominal segment of same ; e, pupa—all somewhat enlarged. (AfterChittenden, Dept. Agriculture). The Turnir> Maggot (Phorhin hrnasicfp) was seriou^^lv injurious at Mark-dale, and the Onion Maggot (Phorhia ccparum) at Woodstock. For theseunderground insects there has not yet been, found any perfectly effectiveremedy. In the case of the species attacking onions, it is recommended todust the rows of plants with white hellebore once a week from the time thatthe young plants appear above ground; later on, when the bulbs are form-ing, the earth may be removed down to the roots and the exposed part dustedwith white hellebore. The attack on turnips is not usually very severe, butthe same species is liable to injure cabbages and radishes. It may be dealtwith by spraying with a carbolic wash made o
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