NDLI: Susceptibilidade de adultos de Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) a fungicidas utilizados no controle de doenças da macieira

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Susceptibilidade de adultos de Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) a fungicidas utilizados no controle de doenças da macieira

Content Provider	Semantic Scholar
Author	Manzoni, Cristiane Gindri Grützmacher, Anderson Dionei Giolo, Fabrizio Pinheiro Lima, Crislaine Alves Barcellos De Nörnberg, Sandro Daniel Müller, Cristiane Ramos Härter, Wagner Da Roza
Copyright Year	2006
Abstract	This study evaluated the susceptibility under laboratory conditions of Trichogramma pretiosum Riley adults to fungicides recommended by the Integrated Production of Apple (IPA). The bioassays were carried out using the International Organization for Biological Control (IOBC), West Palearctic Regional Section (WPRS) standard protocols. Twelve selected fungicides were studied in the doses (g or ml active ingredient/100 L) captan 1 (0.115), captan 2 (0.120), kresoxim-methyl (0.010), sulphur 1 (AG) (0.480), sulphur 2 (0.480), folpet (0.105), mancozeb (0.160), pyraclostrobin (0.010), tebuconazole (0.010), tetraconazole (0.005), thiophanate-methyl (0.050) and triforine (0.024). Distilled water was used as the blank treatment and the insecticide triclorfon (0.150) as a positive control. The parasitoids were exposed to dry residues applied on glass plates. The reduction in the capacity of parasitism was used to measure the effect of the chemical in comparison to the blank treatment. Each treatment was replicated four times. The results allowed us to classify the fungicides tested in four categories: 1, harmless ( 99%). 75% of the tested substances were classified as selective (classes 1 and 2) to the parasitoid. The fungicides captan 1, captan 2, kresoxim-methyl, folpet, pyraclostrobin, tebuconazole, thiophanate-methyl and triforine were harmless; mancozeb was slightly harmful; sulphur 1 (AG) and tetraconazole were moderately harmful and sulphur 2 was harmful. These findings should be taken into account when selecting fungicides to spray apple orchards against fungi diseases to preserve the egg parasitoid T. pretiosum.
Starting Page	223
Ending Page	230
Page Count	8
File Format	PDF HTM / HTML
DOI	10.1590/S1519-566X2006000200011
Volume Number	35
Alternate Webpage(s)	http://www.scielo.br/pdf/ne/v35n2/30037.pdf
Alternate Webpage(s)	https://doi.org/10.1590/S1519-566X2006000200011
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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