Incidence of Phytophthora Blight and Verticillium Wilt Within Chile Pepper Fields in New Mexico

Plant Disease
S Sanogo, J Carpenter

Abstract

Statewide surveys of commercial chile pepper (Capsicum annuum) fields were conducted in New Mexico from 2002 to 2004 to gain information on the incidence of diseases with wilt symptoms and their causative agents. Fifty-nine fields were surveyed during the course of this 3-year study when chile pepper plants were at growth stages from green fruit to beginning red fruit. All fields were affected by diseases with wilt symptoms. The proportion of total field area exhibiting symptoms of wilt spanned from less than 1% to over 80%. Field diagnostics along with laboratory assays of wilted plants revealed that the wilting was caused by Phytophthora capsici and Verticillium dahliae. The two pathogens were both found in 80% of the fields, and occurred together in some wilted plants in 12% of the fields. Average incidence of plant infection (number of plants infected with P. capsici or V. dahliae out of 5 to 25 wilted plants sampled) varied from approximately 40 to 90% for P. capsici, and from 18 to 65% for V. dahliae. Incidence of plant infection by P. capsici was approximately 40% less in fields with drip irrigation than in fields with furrow irrigation. In contrast, incidence of plant infection by V. dahliae was approximately 32% greate...Continue Reading

References

Sep 18, 2001·Health Affairs·P M Danzon, M V Pauly
Dec 1, 1999·Plant Disease·Jean Beagle Ristaino, Stephen A Johnston
Jul 1, 1997·Plant Disease·X B Yang, P Lundeen

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Citations

May 7, 2019·Plant Disease·Yi ZhuSoum Sanogo
Jan 1, 2017·Experimental Agriculture·P PaparuC Mukankusi
Oct 18, 2016·Frontiers in Microbiology·Amrita SaxenaHarikesh B Singh
Nov 9, 2011·Pest Management Science·Pingsheng JiAlexander S Csinos
Jun 26, 2020·Annual Review of Phytopathology·Cassandra L Swett

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