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Puncturevine Biocontrol

Introduced to North America likely in the early 1900s, Tribulus terrestris, also known as puncturevine, caltrops or goatheads, is an annual weed native to Africa, Asia, Australia and Europe. In this video we will discuss this pesky invasive weed, control methods, and the current best classical biological control agents for use against puncturevine, Microlarinus lypriformis and Microlarinus lareynii, the puncturevine stem and seed weevils. Topics will include identification, collection, sorting, release and what to expect from biological control. Timestamps 00:00 Introduction 00:33 Puncturevine, Tribulus terrestris, History & Lifecycle 02:16 Puncturevine, Tribulus terrestris, Control 03:43 Puncturevine, Tribulus terrestris, Is biocontrol right for you? 04:52 Puncturevine Seed & Stem Weevils, Microlarinus spp., History & Lifecycle 06:18 Puncturevine Seed & Stem Weevils, Microlarinus spp., Collection 08:12 Puncturevine Seed & Stem Weevils, Microlarinus spp., Sorting 10:12 Puncturevine Seed & Stem Weevils, Microlarinus spp., Releasing Weevils 11:21 Puncturevine Seed & Stem Weevils, Microlarinus spp., What to Expect 12:29 Puncturevine Seed & Stem Weevils, Microlarinus spp., Integrated Mangement Acknowledgements: Photography, videography, and video editing by Kristi Gladem and Torri Gladem Field work by Kristi Gladem, Torri Gladem, and Kelly Hanrahan Further information: https://ag.colorado.gov/conservation/... https://naisma.org/biocontrol/ https://naisma.org/programs/biocontro... https://ibiocontrol.org/weed-biocontr... https://biocontrol.entomology.cornell... This material is based upon work that is supported by the National Institute of Food and Agriculture, U.S. Department of Agriculture, under MSU Subaward ID #G125-24-W9986 through the Western Sustainable Agriculture Research and Education program under project number WPDP23-006. USDA is an equal opportunity employer and service provider. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.