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5 results on '"Stoltman, L."'

3. Integrated control of two tortricid (Lepidoptera) pests in apple orchards with sex pheromones and insecticides

Author

PASTORI, P. L., ARIOLI, C. J., BOTTON, M., MONTEIRO, L. B., STOLTMAN, L., MAFRA-NETO, A., PATRIK LUIZ PASTORI, UFCE, CRISTIANO JOÃO ARIOLI, EPAGRI, MARCOS BOTTON, CNPUV, LINO BITTENCOURT MONTEIRO, UFPR, LYNDSIE STOLTMAN, ISCA TECHNOLOGIES, and AGENOR MAFRA-NETO, ISCA TECHNOLOGIES.

Subjects
Fruticultura, Controle, Praga de planta, Controle Integrado, Atrativo sexual, Feromônio, Lagarta, Maçã
Abstract

The apple is attacked by a significant number of insect pests in Brazilian commercial orchards, including Bonagota salubricola and Grapholita molesta (Lepidoptera: Tortricidae). Sexual disruption of B. salubricola and G. molesta was evaluated in apple orchard using the flowable pheromone formulations, SPLAT Grafo+Bona (SG+B), SPLAT Attract and Kill Grafo+Bona (SAKG+B), and compared with the standard insecticides used for management in the Integrated Apple Production (IAP) system. Both formulations were applied at a rate of 1kg/ha on October 10, 2005 and December 13, 2005 using 300 and 1000 point sources/ha of SG+B and SAKG+B, respectively in experimental units of 7 ha. Adult male captures of B. salubricola and G. molesta were evaluated weekly in Delta traps with specific synthetic sex pheromone from October 10, 2005 to February 14, 2006. Damage to fruits was evaluated on November 21 and December 21, 2005, and January 25 and February 14, 2006. In the SPLAT treated experimental units a significant reduction was observed in the number of B. salubricola and G. molesta males caught in Delta traps compared to the experimental unit IAP. Damage by B. salubricola at harvest ranged from 1.63 to 4.75% with no differences between treatments, while damage by G. molesta was near zero in all experimental units. Mating disruption using SG+B and SAKG+B was sufficient to control B. salubricola and G. molesta with results equivalent to IAP guidelines. This technology is promising for management of both pests in Brazilian apple orchards with immediate reduction of 43% in the number of insecticide applications.

Published
2012

5. Response of melon fly (Diptera: Tephritidae) to weathered SPLAT-Spinosad-Cue-Lure.

Author

Vargas RI, Piñero JC, Jang EB, Mau RF, Stark JD, Gomez L, Stoltman L, and Mafra-Neto A

Subjects
Animals, California, Gels, Male, Pest Control instrumentation, Sex Attractants toxicity, Tephritidae drug effects, Weather, Butanones toxicity, Pest Control methods, Tephritidae physiology
Abstract

Studies were conducted in Hawaii to measure attraction of male melon fly, Bactrocera cucurbitae (Coquillett) (Diptera: Tephritidae), to SPLAT-Cue-Lure (C-L) and SPLAT-Melo-Lure (M-L) (raspberry ketone formate). Direct field comparisons of SPLAT-C-L and SPLAT-M-L at low (5%) and high (20%) concentrations indicated few differences in attraction over a 15-wk period. Subsequently, only SPLAT-Spinosad-C-L (5%) was compared with Min-U-Gel C-L with naled (standard used in California) in weathering studies. Treatments were weathered for 1, 2, 4, and 8 wk in Riverside, CA, and shipped to Hawaii for attraction/toxicity tests under field and semifield conditions by using released males of controlled ages, and for feeding tests in the laboratory. In terms of attraction, SPLAT-Spinosad-C-L compared favorably to, or outperformed the current standard of Min-U-Gel-C-L with naled. In terms of toxicity, the cumulative 24-h mortality did not differ between the two insecticide-containing C-L treatments in field cage studies after 8 wk. However, in feeding studies in which individual males were exposed for 5 min to the different C-L treatments after 4 wk of weathering, SPLAT-Spinosad-C-L demonstrated reduced mortality compared with the Min-U-Gel-C-L with naled, suggesting reduced persistence of the spinosad material. Spinosad has low contact toxicity and when mixed with SPLAT and C-L offers a reduced risk alternative for control of B. cucurbitae and related C-L-responding species, without many of the negative effects to humans and nontargets of broad-spectrum contact poisons such as naled.

Published
2010
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