Pruning of small fruit crops can affect habitat suitability for Drosophila suzukii

Torsten Schöneberg; Arielle Arsenault-Benoit; Christopher M. Taylor; Bryan R. Butler; Daniel T. Dalton; Vaughn M. Walton; Andrew Petran; Mary A. Rogers; Lauren M. Diepenbrock; Hannah J. Burrack; Heather Leach; Steven Van Timmeren; Philip D. Fanning; Rufus Isaacs; Brian E. Gress; Mark P. Bolda; Frank G. Zalom; Craig R. Roubos; Richard K. Evans; Ashfaq A. Sial; Kelly A. Hamby

doi:10.1016/j.agee.2020.106860

Pruning of small fruit crops can affect habitat suitability for Drosophila suzukii

Torsten Schöneberg, Arielle Arsenault-Benoit, Christopher M. Taylor, Bryan R. Butler, Daniel T. Dalton, Vaughn M. Walton, Andrew Petran, Mary A. Rogers, Lauren M. Diepenbrock, Hannah J. Burrack, Heather Leach, Steven Van Timmeren, Philip D. Fanning, Rufus Isaacs, Brian E. Gress, Mark P. Bolda, Frank G. Zalom, Craig R. Roubos, Richard K. Evans, Ashfaq A. SialKelly A. Hamby

Horticultural Science

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

Insect activity, survival, and development are affected by climatic conditions that elicit effects at multiple scales. Pruning small fruit crop canopies alters the microclimate, which in turn may influence insect pest activity. We investigated the effect of three canopy density treatments (high, medium, low) on Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) fruit infestation in blueberries and caneberries using a two-year, multi-state experiment. We quantified the effect of canopy density on canopy microclimate, fruit quality (total soluble solids, fruit firmness), and yield. To better understand heterogeneity in canopy microclimate, parameters were further separated by canopy location (exterior vs. interior) in Maryland. In both crops, meta-analyses reveal small magnitude effects of the plant canopy on microclimate, whereas analysis of variance did not separate these effects, with mean canopy differences of 0.1–0.7 °C and 0.5–1.3 % relative humidity (RH) between caneberry canopy densities and locations. In caneberry multi-state trials, 0.14 fewer D. suzukii larvae (g fruit)⁻¹ occurred on average in the low canopy density treatment, and 0.2 fewer D. suzukii larvae (g fruit)⁻¹ occurred in exterior raspberries in Maryland compared with the canopy interior. Artificially infested blueberry fruit indicated immature D. suzukii survival within fruit can vary across canopy densities and locations. Although lower total yield was produced in low density canopies, canopy density did not influence berry quality or marketable yield. Microhabitats provide important shelter from extreme environmental conditions; the availability of shelter and ability to locate it affects insect pest populations and distributions. Understanding how crop canopy microclimate affects D. suzukii infestation can inform efforts to develop habitat manipulation tactics and improve the efficiency of fruit production.

Original language	English (US)
Article number	106860
Journal	Agriculture, Ecosystems and Environment
Volume	294
DOIs	https://doi.org/10.1016/j.agee.2020.106860
State	Published - Jun 1 2020

Bibliographical note

Funding Information:
This work is supported by Organic Research and Extension Initiative (grant no. 2015–51300‐24154) from the USDA National Institute of Food and Agriculture. and by the Maryland Agricultural Experiment Station (grant no. 30379). Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of funding agencies. We would like to thank Dr. Dong Liang, University of Maryland Center for Environmental Science, for his assistance with statistical analyses. We would also like to thank collaborating growers at the California, Maryland, Minnesota, and Oregon sites for allowing us to conduct research in their fields. We would like to thank Amber Bosch, Josh Briggs, Emilie Cole, Elizabeth Espeland, Ben Johnson, Analise Sala, Katherine Spink, and Jaclyn Stone for their technical assistance.

Funding Information:
This work is supported by Organic Research and Extension Initiative (grant no. 2015–51300‐24154 ) from the USDA National Institute of Food and Agriculture. and by the Maryland Agricultural Experiment Station (grant no. 30379 ). Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of funding agencies. We would like to thank Dr. Dong Liang, University of Maryland Center for Environmental Science, for his assistance with statistical analyses. We would also like to thank collaborating growers at the California, Maryland, Minnesota, and Oregon sites for allowing us to conduct research in their fields. We would like to thank Amber Bosch, Josh Briggs, Emilie Cole, Elizabeth Espeland, Ben Johnson, Analise Sala, Katherine Spink, and Jaclyn Stone for their technical assistance.

Publisher Copyright:
© 2020 Elsevier B.V.

Keywords

Blackberry
Blueberry
Canopy microclimate
Cultural management
Raspberry
Spotted-wing drosophila

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Schöneberg, T., Arsenault-Benoit, A., Taylor, C. M., Butler, B. R., Dalton, D. T., Walton, V. M., Petran, A., Rogers, M. A., Diepenbrock, L. M., Burrack, H. J., Leach, H., Van Timmeren, S., Fanning, P. D., Isaacs, R., Gress, B. E., Bolda, M. P., Zalom, F. G., Roubos, C. R., Evans, R. K., ... Hamby, K. A. (2020). Pruning of small fruit crops can affect habitat suitability for Drosophila suzukii. Agriculture, Ecosystems and Environment, 294, Article 106860. https://doi.org/10.1016/j.agee.2020.106860

Schöneberg, T, Arsenault-Benoit, A, Taylor, CM, Butler, BR, Dalton, DT, Walton, VM, Petran, A, Rogers, MA, Diepenbrock, LM, Burrack, HJ, Leach, H, Van Timmeren, S, Fanning, PD, Isaacs, R, Gress, BE, Bolda, MP, Zalom, FG, Roubos, CR, Evans, RK, Sial, AA & Hamby, KA 2020, 'Pruning of small fruit crops can affect habitat suitability for Drosophila suzukii', Agriculture, Ecosystems and Environment, vol. 294, 106860. https://doi.org/10.1016/j.agee.2020.106860

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abstract = "Insect activity, survival, and development are affected by climatic conditions that elicit effects at multiple scales. Pruning small fruit crop canopies alters the microclimate, which in turn may influence insect pest activity. We investigated the effect of three canopy density treatments (high, medium, low) on Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) fruit infestation in blueberries and caneberries using a two-year, multi-state experiment. We quantified the effect of canopy density on canopy microclimate, fruit quality (total soluble solids, fruit firmness), and yield. To better understand heterogeneity in canopy microclimate, parameters were further separated by canopy location (exterior vs. interior) in Maryland. In both crops, meta-analyses reveal small magnitude effects of the plant canopy on microclimate, whereas analysis of variance did not separate these effects, with mean canopy differences of 0.1–0.7 °C and 0.5–1.3 % relative humidity (RH) between caneberry canopy densities and locations. In caneberry multi-state trials, 0.14 fewer D. suzukii larvae (g fruit)−1 occurred on average in the low canopy density treatment, and 0.2 fewer D. suzukii larvae (g fruit)−1 occurred in exterior raspberries in Maryland compared with the canopy interior. Artificially infested blueberry fruit indicated immature D. suzukii survival within fruit can vary across canopy densities and locations. Although lower total yield was produced in low density canopies, canopy density did not influence berry quality or marketable yield. Microhabitats provide important shelter from extreme environmental conditions; the availability of shelter and ability to locate it affects insect pest populations and distributions. Understanding how crop canopy microclimate affects D. suzukii infestation can inform efforts to develop habitat manipulation tactics and improve the efficiency of fruit production.",

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note = "Funding Information: This work is supported by Organic Research and Extension Initiative (grant no. 2015–51300‐24154) from the USDA National Institute of Food and Agriculture. and by the Maryland Agricultural Experiment Station (grant no. 30379). Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of funding agencies. We would like to thank Dr. Dong Liang, University of Maryland Center for Environmental Science, for his assistance with statistical analyses. We would also like to thank collaborating growers at the California, Maryland, Minnesota, and Oregon sites for allowing us to conduct research in their fields. We would like to thank Amber Bosch, Josh Briggs, Emilie Cole, Elizabeth Espeland, Ben Johnson, Analise Sala, Katherine Spink, and Jaclyn Stone for their technical assistance. Funding Information: This work is supported by Organic Research and Extension Initiative (grant no. 2015–51300‐24154 ) from the USDA National Institute of Food and Agriculture. and by the Maryland Agricultural Experiment Station (grant no. 30379 ). Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of funding agencies. We would like to thank Dr. Dong Liang, University of Maryland Center for Environmental Science, for his assistance with statistical analyses. We would also like to thank collaborating growers at the California, Maryland, Minnesota, and Oregon sites for allowing us to conduct research in their fields. We would like to thank Amber Bosch, Josh Briggs, Emilie Cole, Elizabeth Espeland, Ben Johnson, Analise Sala, Katherine Spink, and Jaclyn Stone for their technical assistance. Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

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N2 - Insect activity, survival, and development are affected by climatic conditions that elicit effects at multiple scales. Pruning small fruit crop canopies alters the microclimate, which in turn may influence insect pest activity. We investigated the effect of three canopy density treatments (high, medium, low) on Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) fruit infestation in blueberries and caneberries using a two-year, multi-state experiment. We quantified the effect of canopy density on canopy microclimate, fruit quality (total soluble solids, fruit firmness), and yield. To better understand heterogeneity in canopy microclimate, parameters were further separated by canopy location (exterior vs. interior) in Maryland. In both crops, meta-analyses reveal small magnitude effects of the plant canopy on microclimate, whereas analysis of variance did not separate these effects, with mean canopy differences of 0.1–0.7 °C and 0.5–1.3 % relative humidity (RH) between caneberry canopy densities and locations. In caneberry multi-state trials, 0.14 fewer D. suzukii larvae (g fruit)−1 occurred on average in the low canopy density treatment, and 0.2 fewer D. suzukii larvae (g fruit)−1 occurred in exterior raspberries in Maryland compared with the canopy interior. Artificially infested blueberry fruit indicated immature D. suzukii survival within fruit can vary across canopy densities and locations. Although lower total yield was produced in low density canopies, canopy density did not influence berry quality or marketable yield. Microhabitats provide important shelter from extreme environmental conditions; the availability of shelter and ability to locate it affects insect pest populations and distributions. Understanding how crop canopy microclimate affects D. suzukii infestation can inform efforts to develop habitat manipulation tactics and improve the efficiency of fruit production.

AB - Insect activity, survival, and development are affected by climatic conditions that elicit effects at multiple scales. Pruning small fruit crop canopies alters the microclimate, which in turn may influence insect pest activity. We investigated the effect of three canopy density treatments (high, medium, low) on Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) fruit infestation in blueberries and caneberries using a two-year, multi-state experiment. We quantified the effect of canopy density on canopy microclimate, fruit quality (total soluble solids, fruit firmness), and yield. To better understand heterogeneity in canopy microclimate, parameters were further separated by canopy location (exterior vs. interior) in Maryland. In both crops, meta-analyses reveal small magnitude effects of the plant canopy on microclimate, whereas analysis of variance did not separate these effects, with mean canopy differences of 0.1–0.7 °C and 0.5–1.3 % relative humidity (RH) between caneberry canopy densities and locations. In caneberry multi-state trials, 0.14 fewer D. suzukii larvae (g fruit)−1 occurred on average in the low canopy density treatment, and 0.2 fewer D. suzukii larvae (g fruit)−1 occurred in exterior raspberries in Maryland compared with the canopy interior. Artificially infested blueberry fruit indicated immature D. suzukii survival within fruit can vary across canopy densities and locations. Although lower total yield was produced in low density canopies, canopy density did not influence berry quality or marketable yield. Microhabitats provide important shelter from extreme environmental conditions; the availability of shelter and ability to locate it affects insect pest populations and distributions. Understanding how crop canopy microclimate affects D. suzukii infestation can inform efforts to develop habitat manipulation tactics and improve the efficiency of fruit production.

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Pruning of small fruit crops can affect habitat suitability for Drosophila suzukii

Abstract

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