. A manual of injurious insects [microform] : with methods of prevention and remedy for their attacks to food crops, forest trees, and fruit : to which is appended a short introduction to entomology. Insect pests; Agricultural pests; Entomology; Insectes nuisibles, Lutte contre les; Ennemis des cultures, Lutte contre les; Entomologie. BEAN APHIS ; BEAN BEETLE. g or other mineral oil, to the soft-soap wash would make the apphcation much more serviceable. For proportions that ma;y je safely used and method of preparation, see references to " paraffin " and " emulsion " in Ind
. A manual of injurious insects [microform] : with methods of prevention and remedy for their attacks to food crops, forest trees, and fruit : to which is appended a short introduction to entomology. Insect pests; Agricultural pests; Entomology; Insectes nuisibles, Lutte contre les; Ennemis des cultures, Lutte contre les; Entomologie. BEAN APHIS ; BEAN BEETLE. g or other mineral oil, to the soft-soap wash would make the apphcation much more serviceable. For proportions that ma;y je safely used and method of preparation, see references to " paraffin " and " emulsion " in Index. A healthy, luxuriant growth is also of importance. The " Colliers " may attack the healthy as well as the unhealthy plants, but the strong growth which is run on by previous good cultivation of the ground, and also the apphcation of a little liquid manure if desirable, will keep the plant in heart with a plentiful flow of sap, and thus it will suffer much less from attack than the weakly, stunted growths that have no power to replace the juices which the Aphides are constantly sucking out ot them. "^ ^ Eemoval of the wild plants on which this kind of Aphis is rvi. f?!^""?, '^'^"^^ probably materially lessen its numbers. These Colliers or " Black Flies " are to be found in great numbers on the Curled Dock {liumex crispus, whence their name of -n/wjc/s"), and also on Thistles; and it is stated (see Bnt. Aphides,' vol. ii. p. 83) that the wingless egg- producing female winters in Furze-bushes, the branches of which may be found dotted with Aphis eggs. Bean Beetle. Bniclms granarius, Curtis; B. rufimanus, Boh. 0»H. 2. mTa l ^'-rI'v, -^ i u . ' .?^- "'''â '' ^^^ â¢'^8-; (i anil 7, pupa>, iiat. size and ^Tmn^' ^^^".^"J"!'^'! by beetle, vegetating; 9 and 10. Bruchm pisi, nat. size ana mag.; 11, injured Please note that these images are extracted from scanned page images that may have been digitally enh
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectentomology, bookyear1
