Agriculture . Fig. 32 —Ladybird beetles, or lady-bugs. The straight lines represent the averagenatural length. These beetles are very destructive to plant lice. Among the beetles we have a large number of very des-tructive insects. There is, for instance, the potato beetlewhich does so much damage to the potato plant by eatingthe leaves. See fig. ^3- Ihe hard-shelled beede lays herorange-colored eggs on the under side of a leaf. Theseeggs hatch into the soft-skinned larvae which eat theleaves. The larvae change to pupne and these to the full-grown winged insects. Since the larvae feed on the l
Agriculture . Fig. 32 —Ladybird beetles, or lady-bugs. The straight lines represent the averagenatural length. These beetles are very destructive to plant lice. Among the beetles we have a large number of very des-tructive insects. There is, for instance, the potato beetlewhich does so much damage to the potato plant by eatingthe leaves. See fig. ^3- Ihe hard-shelled beede lays herorange-colored eggs on the under side of a leaf. Theseeggs hatch into the soft-skinned larvae which eat theleaves. The larvae change to pupne and these to the full-grown winged insects. Since the larvae feed on the leaves asimple remedy is to sprinkle some poison (Paris green) onthe leaves just before they begin to feed, or to destroy the 8o AGRICULTURE. eggs before these hatch. Why does the eating oflf of theleaves above ground injure the plant in producing tubers underground ?.
Size: 2130px × 1173px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookidag, booksubjectagriculture
