. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 1900 J ENTOMOLOGICAL SOCIETY. 73 Badly infested trees should be cut down and burned, while those but slightly infested should be sprayed with whitewash, or with a mixture of whale-oil soap and carbolic acid. The San Jose Scale (Aspidiotus perniciosus). This pernicious scale is still with us in abundance, and in spite of the treatment of last spring it is just as numerous as it was last fall. Many new infestations have also been discovered, so that the whole problem of treatment will have to be take
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 1900 J ENTOMOLOGICAL SOCIETY. 73 Badly infested trees should be cut down and burned, while those but slightly infested should be sprayed with whitewash, or with a mixture of whale-oil soap and carbolic acid. The San Jose Scale (Aspidiotus perniciosus). This pernicious scale is still with us in abundance, and in spite of the treatment of last spring it is just as numerous as it was last fall. Many new infestations have also been discovered, so that the whole problem of treatment will have to be taken up anew, Mr, Fisher, Chief Inspector, considers crude petroleum more effective than whale-oil soap in killing the scale, but Prof. Webster, of Ohio, maintains that crude petroleum is too dangerous a remedy to put in the hands of the ordinary fruitgrower, and accordingly prefers whale-oil soap. The scale is here to stay and the sooner the orchardist recognizes this fact, and the need of effective treatment to keep it in check the better will it be for the fruit industry of the Province. A great industry is at stake. Can we afford to lose this great industry ? Garden Insects. The Bean Fly. (Aniho- myia radicum)-In June many complaints reached the office regarding the attacks of grubs on beans in Lambtoa Oounty. One correspondent wrote that hundreds of acres of beans were being destroyed. Many of the beans did not germinate at all, due to the fac t that the maggot ate the interior of the seed, and many of the stems never developed leaves through the destruction of the central portion of the stem. Figure 33 shows very well the nature of the work of the maggot both in the seed and the stem. The maggots are about one- fifth inch long and yellowish- white in color. They taper to a point in front and broaden out behind. After feeding for a while the maggots descend into the ground, and change into barrel-shaped pupae. A week or ten days later the flies emerge from the pupa cases and
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsectp, bookyear1872
