Editing Horseradish (section)

===Pests and diseases===
Introduced by accident, "cabbageworms", the larvae of ''[[Pieris rapae]]'', are a common caterpillar pest in horseradish. Mature caterpillars chew large, ragged holes in the leaves leaving the large veins intact. Handpicking is an effective control strategy in home gardens.<ref>{{cite web |url=http://www.extension.umn.edu/yardandgarden/ygbriefs/e253caterpillarpests-cole.html |title=Caterpillar Pests of Cole Crops in Home Gardens |access-date=2007-09-30 |author=Suzanne Wold-Burkness and Jeff Hahn |publisher=University of Minnesota |url-status=dead |archive-url=https://web.archive.org/web/20071002043657/http://www.extension.umn.edu/yardandgarden/ygbriefs/e253caterpillarpests-cole.html |archive-date=2007-10-02 }}</ref> Another common pest of horseradish is the mustard leaf beetle (''[[Phaedon cochleariae]]'').<ref>{{Cite journal |last1=Gross |first1=Jürgen |last2=Müller |first2=Caroline |last3=Vilcinskas |first3=Andreas |last4=Hilker |first4=Monika |date=November 1998 |title=Antimicrobial Activity of Exocrine Glandular Secretions, Hemolymph, and Larval Regurgitate of the Mustard Leaf BeetlePhaedon cochleariae |url=https://linkinghub.elsevier.com/retrieve/pii/S0022201198947814 |journal=Journal of Invertebrate Pathology |language=en |volume=72 |issue=3 |pages=296–303 |doi=10.1006/jipa.1998.4781 |pmid=9784354}}</ref> These beetles are undeterred by the defense mechanisms produced by Brassicaceae plants like horseradish.<ref name=":new2">{{cite journal |last1=Friedrichs |first1=Jeanne |last2=Schweiger |first2=Rabea |last3=Geisler |first3=Svenja |last4=Mix |first4=Andreas |last5=Wittstock |first5=Ute |last6=Müller |first6=Caroline |date=September 2020 |title=Novel glucosinolate metabolism in larvae of the leaf beetle Phaedon cochleariae |journal=Insect Biochemistry and Molecular Biology |volume=124 |pages=103431 |doi=10.1016/j.ibmb.2020.103431 |pmid=32653632}}</ref>