. The encyclopedia of practical horticulture; a reference system of commercial horticulture, covering the practical and scientific phases of horticulture, with special reference to fruits and vegetables;. Gardening; Fruit-culture; Vegetable gardening. 1568 ENCYCLOPEDIA OP PRACTICAL HORTICULTURE the crotch of a tree in Fig. 3 and again one is sliown at the entrance to a burrow containing larva m Fig 2. The larval cell is also lined with silk. The silken tube being merely a continuation of this cell lining. Throughout the winter months the hibernating larva remains in-. Fiff. IIibeinatin£, Cliam
. The encyclopedia of practical horticulture; a reference system of commercial horticulture, covering the practical and scientific phases of horticulture, with special reference to fruits and vegetables;. Gardening; Fruit-culture; Vegetable gardening. 1568 ENCYCLOPEDIA OP PRACTICAL HORTICULTURE the crotch of a tree in Fig. 3 and again one is sliown at the entrance to a burrow containing larva m Fig 2. The larval cell is also lined with silk. The silken tube being merely a continuation of this cell lining. Throughout the winter months the hibernating larva remains in-. Fiff. IIibeinatin£, Cliambei of Twii? Boiei active within this cell. A hibernating larva magnified 26 diameters is shown in Fig. 1. These larvae are exceedingly well protected in their hibernaculae, and Mr. Warren T. Clarke's experiments in California show that they are almost impenetrable to even an oil spray dur- ing the winter season. In the spring of the year, about the time the peach trees bloom, the larvae leave their winter quarters and eat into the tips of the twigs, either beginning their work at the extremities or a short distance below, sometimes hollowing them out for usually a distance of less than an inch from where the twig was entered, leaving a mere shell or hollow cylinder of the portion in which they have fed. Again, they may merely gouge out the tip of a twig on one side, entering in as far as the pith and then leaving for some other twig Thus they go from twig to twig, feeding first in one and then in another, until often the tips of a great many branches will be killed back, there- by checking their growth and more or less injuring the tree. The detection of their work is no difficult matter a short time after they begin feeding, for the leaves of affected twigs soon wilt and later dry up from the injury done to them. The injury the first-brood larvae do to twigs, while sometimes alarming, is not usually to be compared with the in- jury to the fruit from the second and third broo
Size: 1224px × 2043px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, booksubjectfruitculture, booksubjectgardening
