Press enter after choosing selection

Farm And Garden

Farm And Garden image
Parent Issue
Day
29
Month
July
Year
1898
Copyright
Public Domain
OCR Text

As grape berries become full growu and begin to ripen many of tbem will often be observed to be disoolored, and if these be examined a burrow will be found eaten tbrough the pulp from the discolored spot and within ifc a wbitish larva. These injured berries begin to appear wbile the fruit is young and green aud as it ripeus they increase in nuiuber. Frequently several of these discolored and shriveled berries will be fastened together by silken threads iuterrnixed with the excrement of the larvte and the stioky grape juice. The appearance is not nnlike that of black rot. When full grown, the larva attains a length of aboufc one-third of an inch, and, abandouing the grape, cuts out of a grape leaf a little flap which it folds and fastens with silk, forming a little oblong oase in which it changes to a cbrysalis, a little slate colored moth appearing in 10 or 12 days. Our grape berry mctb is widely distributed, occurring probably wberever the grape is growu to any extent, from Canada to Florida and westvvard to California. It attacks all varieties, but is especially destructivo to grapes with tender skins aud such as grow in compact bunches. It is probably three brooded, except in its more norther-n range, the first brood developing on the leaves in May and June, the second brood on green grapes in July, and the third brood on ripeuing grapes in August and September. The early brood of this insect is so scanty that it israrely noticed, and henee protective steps are seldom taken. Later in the season it multiplies with great rapidity, and particularly does it become numerous and destrucfcive if grape gathering bedeferred until a late period. In a bulletin of the department of agciculture, from which these facts are learned, O. H. Marlatt, entomologist, says the use of poisons is not ble as a remedy except agaiust the first brood. Bagging as soou as the first grapes set is recommended, but of greater valué is the prompt collection and burning of all fallen leaves in au tmnn, thns destroying the hibernating larva? and also the collection aud destruction of diseased fruit.

Article

Subjects
Ann Arbor Argus
Old News