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13 results on '"Caldarella, CG"'

5. Prove di controllo di Ceratitis capitata (Wiedemann) in pescheti, aranceti e clementineti biologici

Author

PALUMBO PICCIONELLO, Manuela, CALECA, Virgilio, RIZZO, Roberto, CALDARELLA, Cesare Giuseppe, LO VERDE, Gabriella, Palumbo Piccionello, M, Caleca, V, Rizzo, R, Caldarella, CG, and Lo Verde, G

Subjects
Mediterranean Fruit Fly, medfly, peach, net coverage, orange, clementine, spinosad, kaolin, bentonite, Settore AGR/11 - Entomologia Generale E Applicata
Abstract

Tests to control Ceratitis capitata (Wiedemann) in organic peach, orange and clementine orchards. The Mediterranean Fruit Fly, Ceratitis capitata (Wiedemann), is considered the key pest of several fruit species in organic farming. Experiments for the control of this pest have been carried out in organic peach orchards (in 2009 on a medium-late ripening cultivar, ‘Bella di Bivona’; in 2011 on a very early ripening one, ‘San Pedro’) testing nets, spinosad and pyrethrum (year 2009), in orange citrus groves (cv. Navelina, early ripening period), comparing spinosad, kaolin and bentonite (years 2009 and 2010) and in a clementine grove (cv. Monreal), using kaolin and bentonite. The very early ripening cultivars anticipate medfly presence in the field and avoid its attack; when adults of C. capitata are present the only effective method to protect peach production resulted the coverage with nets, as none of tested products obtained significant differences in infestation levels in comparison with untreated control. Spinosad resulted not effective also in the orange grove, while kaolin and bentonite limited the pest attack both on orange and clementine; results can be considered satisfactory for kaolin, while the two bentonite products used in the trials showed some differences probably due to their micronization degree.

Published
2011

8. Indagini preliminari su bacilli sporigeni associati ad adulti di Punteruolo rosso e loro possibili impieghi in lotta biologica

Author

FRANCESCA, Nicola, CALDARELLA, Cesare Giuseppe, MOSCHETTI, Giancarlo, COLAZZA S, LONGO S, FILARDO G, FRANCESCA N, CALDARELLA CG, and MOSCHETTI G

Subjects
Bacillus spp., Rhynchophorus ferrugineus, lotta biologica
Abstract

E’ stata condotta un’indagine per isolare batteri sporigeni associati ad adulti morti di Rhynchophorus ferrugineus. La carica microbica riscontrata, sia quella superficiale che endogena, risulta essere elevata (107 UFC/gr). Gli isolati sono riconducibili al genere Bacillus. La produzione di cristalli parasporali, potenziali δ-endotossine, è stata utilizzata come parametro fondamentale per lo screening delle colture. All’attualità su un totale di 126 isolati solo 8, presentanti elevata produzione di esostrutture, sono stati sottoposti a caratterizzazione tassonomica. Gli isolati GC33 e GC76, identificati presuntivamente come Bacillus thuringiensis, sono stati saggiati alla concentrazione di 106 UFC/ml su uova di R.f. producendo una mortalità del 15% del totale delle uova. Altrettanto bassa è risultata la tossicità di GC11 Bacillus sphericus e di GC57 Bacillus megaterium.

Published
2009

12. Impiego dei nematodi entomopatogeni in ambiente urbano per il controllo del Punteruolo rosso

Author

LO BUE, Paolo, CALDARELLA, Cesare Giuseppe, GRISAFI, Francesca, LO VERDE, Gabriella, PERI, Ezio, COLAZZA, Stefano, Sala, A, Chiabrando, F, La Mantia, G, Musacchia, D, Lo Bue, P, Caldarella, CG, Sala, A, Chiabrando, F, Grisafi, F, La Mantia, G, Musacchia, D, Lo Verde, G, Peri, E, and Colazza, S

Subjects
Settore AGR/11 - Entomologia Generale E Applicata, Rhinchophorus ferrugineu, Steinernema carpocapsae, adulti, larve
Published
2009

13. Pathogenicity bioassays of isolates of Beauveria bassiana on Rhynchophorus ferrugineus.

Author

Lo Verde G, Torta L, Mondello V, Caldarella CG, Burruano S, and Caleca V

Subjects
Animals, Larva growth & development, Larva microbiology, Pupa growth & development, Pupa microbiology, Sicily, Weevils growth & development, Beauveria physiology, Biological Control Agents, Weevils microbiology
Abstract

Background: The control of Rhynchophorus ferrugineus (Olivier), the main palm pest in the Mediterranean Basin, is problematic because of its biology and the current restrictions in many European countries on the use of chemical insecticides in urban areas. Entomopathogenic fungi have been studied as potential biological control agents, but information on their natural incidence is limited. Strains of Beauveria bassiana (Balsamo) Vuillemin were isolated from symptomatic insects collected on dead palms, and their pathogenicity against different instars of R. ferrugineus was evaluated in the laboratory., Results: The overall percentage of infected insects found in Canary palms was 7%. In laboratory bioassays, hatching of eggs treated with three different isolates of B. bassiana was 41.2, 26.8 and 29.9%, significantly lower than the control (62.4%). Larvae and adults were treated with a single isolate in two ways: spraying each insect with a conidial suspension or feeding them with fruit portions previously immersed in the same conidial suspension. At the end of the two trials, the mortality of treated larvae was 88 and 92%, and the mean survival time was 10.4 and 11.8 days, significantly different from the control, where no insect died during the trials. Mortality and survival time recorded in either trial on adults did not significantly differ between treatment and control., Conclusion: This study shows that the pathogenicity of wild isolates of B. bassiana differs among the tested R. ferrugineus instars. The low mortality of treated adults supports their use as vectors of B. bassiana as a potential tool for reducing R. ferrugineus populations., (© 2014 Society of Chemical Industry.)

Published
2015
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