. Ontario Sessional Papers, 1919, . s which had been planted between the trees over most of theground covered by the orchard. The insects even girdled the twigs in many the same place we observed a bearing orchard with 20 per cebt. of its ripening])eaches destroyed, in some cases only the seed being left attached to the sometimes happens that the grasshoppers remain active until after wheat appearsabove ground in which case they may keep the wheat jilants cut off close to thesurface and as might be surmised, it requires but few of the insects to cut off theyoung tend
. Ontario Sessional Papers, 1919, . s which had been planted between the trees over most of theground covered by the orchard. The insects even girdled the twigs in many the same place we observed a bearing orchard with 20 per cebt. of its ripening])eaches destroyed, in some cases only the seed being left attached to the sometimes happens that the grasshoppers remain active until after wheat appearsabove ground in which case they may keep the wheat jilants cut off close to thesurface and as might be surmised, it requires but few of the insects to cut off theyoung tender wheat plants over a considerable area. Excellent results in combatting gras hoppers have been obtainul by the appli-cation of two standard remedie-. namely, poison I ait and the grasshopper a general rule we have continued to recommend the standard poison bait formulaof bran, molasses, fruits or lemon extract aud a poison, preferably Paris green orcrude arsenious oxide or white arsenic if neither of the first two mentioned are. Fig. 6.—Ripening peaches damaged by grasshoppers. Some-times only the sead remained attached to the trie. available. However, the experimeiits of the past year, and cspjcially the experi-ments conducted at Janesville, Wisconsin, by Mr. D. A. Eicker of the LafayetteLaboratory, indicate the non-essentialness of fruits or lemon extract when dealingwith mature grasshoppers and that further studies based on age of the insect,meteorological conditions, et cetera, will show the need of important changes inthe formula for grasshopper bait. Likewise a half and half mixture of hardwoodsawdust, preferably that taken from an ice house, and bran has given resultssufficient to warrant its recommendation. Indeed, Mr. E. E. Twing. county agricul-tural agent of Kalkaska County. Michigan, reports thorough success the past seasonin his county campaign against grasshoppers, using sawdust alene in place of branin the ])oison bait. He used several tons of whit
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