Aphids Injurious to Orchard Fruits, Currant, Gooseberry and Grape Page: 3
42 p. : ill. ; 23 cm.View a full description of this pamphlet.
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APHIDS INJURIOUS TO ORCHARD FRUITS, CUR-
RANT, GOOSEBERRY, AND GRAPE.'
CONTENTS.
Page. Page.
Aphids in general............................ 4 Control measures........................ .... . 34
Apple aphids.............................. 5 Spray formulas....... ........................ 35
Quince aphids-............................... 18 Spraying for apple aphids.............. 39
Pear aphids attacking the foliage ............ 18 Control of aphids on plum, peach, cherry,
Plum aphids.................................. 19 etc ......................................... 40
Cherry aphids.............................. 22 Destruction of winter eggs............... 41
Peach aphids-.............................. 25 Control of aphids on currant, gooseberry,
Currant and gooseberry aphids ............. 27 and grape ......................... 41
Grape aphids attacking the foliage....... ... 32 Clean culture........................ 42
Natural enemies of aphids ........ .......... 33
The control of aphids, or plant lice, is an ever recurring problem
to the grower of orchard and bush fruits. Although cereal and
forage crops furnish perhaps the most striking examples of the de-
struction wrought by aphids, practically no crop is free from attack
by one or more of these small and delicate insects. During the past
decade especially, aphid injury to orchard fruits, particularly the
apple, has been on the increase.
The present bulletin treats of the aphids injurious to fruit and
foliage of apple, quince, pear, plum, cherry, peach, currant, goose-
berry, and grape. Thirty-two species of aphids in all are discussed.
The more important forms affecting a given fruit are considered first,
and then follows a brief account of species known to infest the plant
locally or occasionally, and which growers should be able to dis-
tinguish from the more destructive species. In their life history
aphids are peculiar in many respects, and each species occurs in
several different forms; for this reason a short account of aphids in
general is given for the information of readers not familiar with
these facts. Remedial measures are described at the close of the
bulletin, since similar treatments are applicable, with some varia-
tions, for the control of all the species considered.
1 Since the well known grape phylloxera [Phylloxera vitifoliae (Fitch)] is injurious
principally to the roots and requires control measures radically different from those
employed against foliage-inhabiting aphids, it is mentioned only incidentally in this
bulletin, although its galls on grape leaves are illustrated (fig. 23, p. 32).
NOTE.-This bulletin is of interest to orchardists, vineyardists, and growers of cur-
rants and gooseberries in all parts of the United States.
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Quaintance, A. L. (Altus Lacy), 1870-1958 & Baker, A. C. Aphids Injurious to Orchard Fruits, Currant, Gooseberry and Grape, pamphlet, 1917; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc96449/m1/3/: accessed March 28, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.