DIGITALNA ARHIVA ŠUMARSKOG LISTA
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ŠUMARSKI LIST 1-2/1965 str. 49 <-- 49 --> PDF |
LITERATURA 1. Androić , M.: Leukocitarna reakcija gusjenica kupusnog bijelca (Pieris brassicae L.) na djelovanje insekticida Systox i HCH, Biljna proizvodnja, Zagreb, 1956. 2. Androić , M.: Borov prelac gnjezdar (Cnethocampa pityocampa Schiff), Biološko ekološka studija. Glasnik za šumske pokuse Vol. XIII, 1957. 3. Androić , M.: Pokusno suzbijanje borova četnjaka (Thaumatopoea pityocampa Schiff) bakterijama (Bacillus thuringiensis), Šum. list 3—4, 1961. 4. Biliotti , E.: Difficulte rencontrees dans la determination des periodes d´intervention contre les processionnaire du chene et du Pin. Rev. de Path, veget. Tom. XXXI, Fase. 2, 1952. 5. Biliotti , E.: Les parasites et predateurs de Thaumatopoea pityocampa Schiff (Lepidoptera). Entomophaga Tom III, No 1, 1958. 6. Fankhänel : Über Versuche zur Verwendung von Bakterien- mittein gegen Forstschädlinge in Laboratorien und Freiland. Zeit, des Deutschen Pflanzenschutzdienst F. F. Berlin, 1962. Jahrgang 16, Heft 7. 7. Grison, P., Maury, R., Vago, C: La lutte contre la Processionaire du Pin (Thaumatopoea pityocampa Schiff) dans les Massif du Ventoux. Essai d´utilisation pratique d´un virus speeifique. Revue forsteriere francaise No 5, Mai 1959. 8. K o v a č e v i ć, 2.: Einflus subletaler Konzentrationen der Insekticide auf das Erscheinen von Krankheiten bei einigen Insekten Trans. I. Int. Conf. Insect Pathology and Biol, control. Praha, 1963. 9. Pavan , M.: Attivitä italiana per la lotta biologica con formiche del gruppo Formica rufa contro gli insetti dannosi alle foreste. Collana verde 4, 1959. 10. Te l en g a, N. A.: Das Problem der komplexen Verwendung biologischer und chemischer Methoden der Schädlingsbekämpfung (ruski) Bull. Ukr. naučn. issl. inst. zašč. rast. 1958, 4. POSSIBILITIES OF CONTROLLING PINE PROCESSIONARY MOTH BY MEANS OF BIOLOGICAL AND COMBINED METHODS Results From the presented Graph 1 the folowing conclusions can be drawn: I. a) The insecticide Pantakan (DDT-type) and the biological preparation of Bacillus thuringiensis exercised their individual action on the caterpillars of Pine pro- cessionary moth producing a partial mortality of caterpillars from 59.5 to 60.6 for the insecticide and from 67.6 to 68.9l:i/o for the bacteria. The effect was conspicuous also on pupae whose mortality ranged from 12.1 to 15.9J/o for the insecticide, and from 7.5 to 19.rVo for the bacteria. On the whole the higher concentrations of insecticide and of bacteria proved slightly more effective than the weaker concentrations, at least as regards the mortality of caterpillars. The percentage of imagos obtained ranged from 3 to 19.4i:,/o. b) The combined preparations in the combinations of 0.4V» + 2 g./l., 0.04´Vo + 1 g./l., and 0.004V» + 2 g./l. proved more effective than the separately applied preparations of insecticide or of bacteria. II. From Graphs 2, 3, and 4 it can be concluded that the associated insecticides are by themselves more effective than DDT or Lindane alone, while in combination with bacteria the best results were obtained. Almost in all combinations a 100V»-mortality was achieved even though the caterpillars were in the fifth instar. The percentage of the emerged butterflies as compared with the preceding experiment was insignificant (0—0.75%). In the associated insecticides the percentage of caterpillars killed was smaller than in the combined preparations. In this experiment too Tachina flies remained unaffected. The "/o parasitiration of caterpillars by Tachinidae was in insecticides 2.07—21.5, and in the combined preparations 0.73—14.4. Considering the high mortality in the stage of caterpillars the combined preparations have a conspicuous advantage. The second experiment (Graphs 2, 3, and 4) was performed later, when caterpillars were older, and therefore it is understandable that in combination Pantakan E 16.5 O.z^o + Lindane EA 10 0.6eVo + Bactospeine 4 g./l., the percentage of killed caterpillars was less than in the first experiment (combination DDT + bacteria) although the final result was better with regard to |