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Journal of Integrative Agriculture  2020, Vol. 19 Issue (2): 376-388    DOI: 10.1016/S2095-3119(19)62656-0
Section 3 The interaction between potato aphids and virus Advanced Online Publication | Current Issue | Archive | Adv Search |
Simulation modelling of potato virus Y spread in relation to initial inoculum and vector activity
Andrew GALIMBERTI1, 2, Andrei ALYOKHIN1, Hongchun QU1, 3, Jason ROSE1  
1 School of Biology and Ecology, University of Maine, Orono, ME 04469, USA
2 Eastern New York Commercial Horticulture Program, Cornell Cooperative Extension, Plattsburgh, NY 12901, USA
3 College of Automation, Chongqing University of Posts and Telecommunications, Chongqing 400065, P.R.China
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Potato virus Y (PVY) is a non-persistent virus that is transmitted by many aphid species and causes significant damage to potato production.  We constructed a spatially-explicit model simulating PVY spread in a potato field and used it to investigate possible effects of transmission efficiency, initial inoculum levels, vector behavior, vector abundance, and timing of peak vector activity on PVY incidence at the end of a simulated growing season.  Lower PVY incidence in planted seed resulted in lower virus infection at the end of the season.  However, when populations of efficient PVY vectors were high, significant PVY spread occurred even when initial virus inoculum was low.  Non-colonizing aphids were more important for PVY spread compared to colonizing aphids, particularly at high densities.  An early-season peak in the numbers of non-colonizing aphids resulted in the highest number of infected plants in the end of the season, while mid- and late-season peaks caused relatively little virus spread.  Our results highlight the importance of integrating different techniques to prevent the number of PVY-infected plants from exceeding economically acceptable levels instead of trying to control aphids within potato fields.  Such management plans should be implemented very early in a growing season.
Keywords:  potato virus Y        spatially-explicit modelling        aphids        virus spread        integrated pest management  
Received: 21 September 2018   Accepted:
Fund: This research was supported in part by the United States Department of Agriculture National Institute of Food and Agriculture Special Crops Research Initiative (Award # 2014-51181-22373). Funding for Hongchun Qu’s stay at the University of Maine was received from the National Natural Science Foundation of China (Award # 61871061).
Corresponding Authors:  Correspondence Andrei ALYOKHIN, Tel: +1-207-5812977, Fax: +1-207-5812537, E-mail:   

Cite this article: 

Andrew GALIMBERTI, Andrei ALYOKHIN, Hongchun QU, Jason ROSE . 2020.

Simulation modelling of potato virus Y spread in relation to initial inoculum and vector activity
. Journal of Integrative Agriculture, 19(2): 376-388.

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