. Das Buch der Garten. Im Garten arbeiten. 824 offenen Blüte - Garten. Die Pine-apple scale{Coccus bromelice) infests, dass Obst unter schlechten Anbau. (Aspidiotus echinocacti Bouche.) - Das Weibchen sehr ähnelt A. nerii, nur dass das Schild ist mehr länglich, und einer dunkleren Farbe; das Männchen ist orange oder gelb, die Puppe linear, in Pulverform mit Grauen, und doppelt zerfurcht. Wie der Name schon sagt, ist es auf der oactus Echino gefunden - und auch auf den meisten anderen der Kaktus Stamm. Da es unter den Stacheln und in der tiefen Winkel der Pflanzen eingebettet, dessen Zerstörung ist schwierig. Die Dämpfe der eine Brutstätte der stabilen m

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. The book of the garden. Gardening. 824 OPEN FLOWER-GARDEN. The pine-apple scale {Coccus bromelice) infests that fruit under bad cultivation. Aspidiotus echinocacti (Bouche.)—The female very much resembles A. nerii, only that the shield is more oblong, and of a darker colour; the male is orange or yellow, the pupa linear, powdered with grey, and doubly furrowed. As the name implies, it is found on the Echino- oactus, and also on most other of the Cactus tribe. As it nestles amongst the spines and in the deep angles of the plants, its destruction is difficult. The fumes of a hotbed of stable manure in a high state of fermentation is the only means we have found of destroying them, while in such an atmosphere most of the Cacti luxuriate during their growing season. The small brown scale (Aspidiotus proteus), fig. 268, had escaped the notice of entomologists Fig. 268.. £AIALL BROWN SCALE. until about 1843, when it was detected and de- scribed by the writer of the entomological articles in the early numbers of the " Gardeners' Chronicle." It is said to be very abundant in plant-houses, and was first discovered on the leaves of aloes and amaryllises. It belongs to the second section above noticed, and is named proteus, from the variety of forms it assumes. In regard to the destruction of the scale insects in general, the late T. A. Knight tried a dressing of lime and flour of sulphur with beneficial effects. The brown limpet scale (Coccus patellaformis) is described as being the largest of the family that infests our plant-houses. It is, however, fortunately not very often met with; it is nearly allied to C. hesperidum, but is larger and of greater length. The females are in general found with their heads downwards, and vary very considerably in size and form, some being oval, others more elliptical, while some are slightly curved. The turtle scale (Coccus testudo), fig. 269, is found chiefly on tropical plants requiring a high temperature. The scale is ova

Stockbilder mithilfe von Tags suchen

• bookcentury1800
• bookdecade1850
• booksubjectgardening
• bookyear18