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