Baculoviruses as a method for pest control
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2021-10-12 06:39
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578.842.2:632.93 (1)
Virologie (435)
Boli ale plantelor. Dăunători și organisme vătămătoare pentru plante. Protejarea plantelor (968)
SM ISO690:2012
ZAVTONY, Pantelimon, VOLOSCHYUK, Leonid. Baculoviruses as a method for pest control. In: International Congress of Geneticists and Breeders from the Republic of Moldova, Ed. 11, 15-16 iunie 2021, Chişinău. Chișinău, Republica Moldova: Centrul Editorial-Poligrafic al Universităţii de Stat din Moldova, 2021, Ediția 11, p. 170. ISBN 978-9975-933-56-8. DOI: https://doi.org/10.53040/cga11.2021.141
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International Congress of Geneticists and Breeders from the Republic of Moldova
Ediția 11, 2021
Congresul "International Congress of Geneticists and Breeders from the Republic of Moldova"
11, Chişinău, Moldova, 15-16 iunie 2021

Baculoviruses as a method for pest control

DOI: https://doi.org/10.53040/cga11.2021.141
CZU: 578.842.2:632.93

Pag. 170-170

Zavtony Pantelimon, Voloschyuk Leonid
 
Institute of Genetics, Physiology and Plant Protection
 
Disponibil în IBN: 21 iunie 2021


Rezumat

The purpose on iinvestigation was the study the biological activity of baculoviruses Virin-HS-P. Preparation Virin-HS-P when applied on vegetables a great attention should be paid to strain quality of baculoviruses. Frevious investigation have shown, that under field conditions the preparation allows an essential diminuation of the Helicoverpa armigera density on the tomato plantations. In particular viral preparations which awing to their horizontal and vertical transmission persist in biocenoses and this control for years the density of the harmful pests. However, conception concerning baculoviruses specificity remain so for unclear. It was demonstrated that VPN are not characterized by a strict specificity and baculoviruses can infect and insects which belong to different species. Elaboration of technologies for production and application of baculoviral insecticides is indispensable associated which investigations of their morphological and biological peculiarities. (Volosciuc L., 2009). Testing of two species of Helicoverpa armigera and Mamestra brassicae have demonstrated the fact that virus M.brassicae in combating H.armigera possesses an increased biological activity. It is because of its specificity which it attacks only a just species of harmful insect. Determination of the sick larvae was accomplished by respective simptoms, then with the help of a photonic microscope. For this purpose microscopy with phase contrast and other with interference were used. Infectation of larvae was carried out with viral suspensions at a dose of 102 – 107 SPVC per individual. Observations where accomplished beginning with the third day after infectation. The experimental plot was sown with tomatoes of „Rio Grand” sort on an area of 1200 m2, where the experimental parcel was dislocated in conformity with the methodology of field experiments by Dospekhov (1985). The experimental scheme was ramdomized with five variants and four replicates. On the basis of the results obtained we can deduce the following conclusions. The preparation Virin-HS-P does not negatively act on physiology development of the culture and on formation of tomato fruit. Testing of the preparation Virin-HS-P at a rate of 0,15 kg/ha for control development of Boll worm, II generation, on tomatoes of “Rio Grand” sort has demonstrated of 85,2% in comparison with that of chemical etalon Actara of 92,6%.