. The American fruit culturist. aspberryand blackberry planta-tions. The adult insectis a slender dark-coloredbeetle, about one-half an inch long, and with a yellow thorax. The beetles appear inJune, and the female with her mandibles makes two rows ofpunctures, about an inch apart, around the growing cane nearthe tip. She then deposits an Qg% in the cane midway be-tween the punctures which serve to girdle the cane and cause itto droop and wither. The little white grub soon hatches fromthe egg, and proceeds to tunnel its way down the pith of thecane. Recent observations indicate that the grub l
. The American fruit culturist. aspberryand blackberry planta-tions. The adult insectis a slender dark-coloredbeetle, about one-half an inch long, and with a yellow thorax. The beetles appear inJune, and the female with her mandibles makes two rows ofpunctures, about an inch apart, around the growing cane nearthe tip. She then deposits an Qg% in the cane midway be-tween the punctures which serve to girdle the cane and cause itto droop and wither. The little white grub soon hatches fromthe egg, and proceeds to tunnel its way down the pith of thecane. Recent observations indicate that the grub lives in thecane for two seasons, often extending its tunnel down to theground, where it transforms through the pupa stage to thebeetle. This borer is easily controlled by cutting off when first no-ticed all canes with drooping tips several inches below wherethey are girdled; this will destroy the young grubs. Later,when harvesting the fruit, the infested canes can often bedetected by their sickly appearance or the drying of the. Fig. 270.—Imported Currant V/orm.—Larvae, 2 04 DESTRUCTIVE INSECTS. leaves; all such canes should be cut oflf near the ground andburned. The Snowy Tree-Cricket {(Ecanthus niveus) sometimes seri-ously injures raspberry canes by depositing its eggs in longi-tudinal rows in the canes, forming a long ragged scar, as
Size: 1563px × 1599px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectfruitculture, bookyea
