Impiego delBacillus thuringiensisBerl. nella lotta allaLymantria disparL. in boschi diQuercus suberL. 3: risultati della sperimentazione condotta nel 1992.
Academic Article
Publication Date:
1993
Short description:
Impiego delBacillus thuringiensisBerl.
nella lotta allaLymantria disparL. in boschi diQuercus suberL. 3: risultati della sperimentazione condotta nel 1992 / Lentini, Andrea; Deiana, Pietrino; Luciano, Pietro; Verdinelli, Marcello; Prota, Romolo. - In: STUDI SASSARESI. SEZIONE 3: ANNALI DELLA FACOLTÀ DI AGRARIA DELL'UNIVERSITÀ DI SASSARI. - ISSN 0562-2662. - 35:1(1993), pp. 155-166.
abstract:
The study was carried out in a North Sardinian cork oak forest in 1992. To control the gypsy moth
population three commercial preparations ofB. thuringiensissubsp.kurstakiwere applied by helicopter:
Activator THK and Bactospeine at low volume and Foray 48B at ultra low volume, when
80-90% of the gypsy moth larvae were in 1st and 2nd instars. At 14d after treatment, Activator
(applied at 5 l/ha) did not cause significant population reductions, while Bactospeine (applied at 32
B.I.U./ha) and Foray 48B (applied at 31.75 B.I.U./ha) caused average mortalities respectively of
40 and 53%. All preparations showed a good compatibility with the activity of the gypsy moth
natural enemies. Smaller mortalities, compared with previous tests, seem to be related with the low
average temperatures, between 13.9 and 16.8°C, of the post-treatment week which slowed down
both feeding and metabolism of the larvae just when there was the largest amount of spores on the
foliage.
population three commercial preparations ofB. thuringiensissubsp.kurstakiwere applied by helicopter:
Activator THK and Bactospeine at low volume and Foray 48B at ultra low volume, when
80-90% of the gypsy moth larvae were in 1st and 2nd instars. At 14d after treatment, Activator
(applied at 5 l/ha) did not cause significant population reductions, while Bactospeine (applied at 32
B.I.U./ha) and Foray 48B (applied at 31.75 B.I.U./ha) caused average mortalities respectively of
40 and 53%. All preparations showed a good compatibility with the activity of the gypsy moth
natural enemies. Smaller mortalities, compared with previous tests, seem to be related with the low
average temperatures, between 13.9 and 16.8°C, of the post-treatment week which slowed down
both feeding and metabolism of the larvae just when there was the largest amount of spores on the
foliage.
Iris type:
1.1 Articolo in rivista
Keywords:
Bacillus thuringiensis; aerial spray; effect of temperature; Sardinia
List of contributors:
Lentini, Andrea; Deiana, Pietrino; Luciano, Pietro; Verdinelli, Marcello; Prota, Romolo
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