. Die Enzyklopädie der praktischen Gartenbau; eine Referenz System der kommerziellen Gartenbau, über die praktische und wissenschaftliche Phasen der Gartenbau, mit besonderem Bezug auf Obst und Gemüse;. Gartenarbeit; Obst - Kultur; Gemüseanbau. Kohl SCHÄDLINGE 685 Laub aber die Erfassung großer Mengen von Ihnen. Verschiedene vertrag Sprays, wie z. B. Tabak, Extrahieren, Emulsionen, Seifen, Harz waschen und Arsen auch mit gutem Effekt benutzt worden, aber die Kosten wegen der großen Zahl der erforderlichen Anwendungen, macht sie fast unerschwinglich. E. O. EssiG importiert Kohl Web Worm Hellula undalis, Fab Die

• Bildanbieter: The Book Worm / Alamy Stock Foto
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. 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. CABBAGE PESTS 685 foliage but capture great quantities of them. Various contract sprays, such as tobacco extract, emulsions, soaps, resin wash, and arsenic also have been used with good effect, but the cost due to great numbers of applications necessary, makes them almost prohibitive. E. O. EssiG Imported Cabbage Web Worm Hellula undalis, Fab The moth is gray in color with mot- tled fore wings which have an expanse of about five-eighths of an inch. The full- grown larvae are about half an inch long, grayish-yellow with five longitudinal bands. Distributed pretty well over the South and Southeast. Does considerable dam- age to cabbages, turnips, beets and the cruciferae generally. Several species of flies are parasites. Bordeaux mixture sprayed on the plants when first set out acts as a repellent. Clean culture and destruction of refuse material is also suggested. Literature Bureau Entomology Bulletin 109, Pt. III. Division Entomology Bulletin 33, New Series. Imported Cabbage Worm Pontia rapae Sch. Family Pieridae Pieris rapae Linn. General Appearance Though this is an imported insect it has become as common as if it had al- ways been here. The adult butterflies are about one and one-fourth inches long with a wing expanse of two inches. The color is white with two small black spots near the middle and a large black spot at the tip of each fore wing. The caterpillars are light velvety green in color and very finely dotted with minute dark spots. The length when full grown varies from one to one and one half inches. The chrysalis is about one inch long and varies in color from yellow to green, light or dark gray. Life History In the northern part of the state the species winters over in the chrysalis stage. while in the s

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• bookcentury1900
• booksubjectgardening
• büchersubjektkultur