Current outlook and future research needs for harvest weed seed control in North American cropping systems. Issue 12 (11th August 2020)

• Record Type: Journal Article
• Authors: Shergill, Lovreet S; Schwartz‐Lazaro, Lauren M; Leon, Ramon; Ackroyd, Victoria J; Flessner, Michael L; Bagavathiannan, Muthukumar; Everman, Wesley; Norsworthy, Jason K; VanGessel, Mark J; Mirsky, Steven B
• Is Part Of: Pest management science. Volume 76:Issue 12(2020)
• Page Start: 3887
• Page End: 3895
• Publication Date: 2020-08-11
• Subjects: herbicide resistance management -- integrated weed management -- soil seed bank; Pests -- Control -- Periodicals; Pesticides -- Periodicals; 632.9
• DOI: 10.1002/ps.5986
• Languages: English
• ISSNs: 1526-498X

Abstract

Abstract: Harvest weed seed control (HWSC) comprises a set of tools and tactics that prevents the addition of weed seed to the soil seed bank, attenuating weed infestations and providing a method to combat the development and spread of herbicide‐resistant weed populations. Initial HWSC research efforts in North America are summarized and, combined with the vast area of crops suitable for HWSC, clearly indicate strong potential for this technology. However, potential limitations exist that are not present in Australian cropping systems where HWSC was developed. These include rotations with crops that are not currently amenable to HWSC (e.g. corn), high moisture content at harvest, untimely harvest, and others. Concerns about weeds becoming resistant to HWSC (i.e. adapting) exist, as do shifts in weed species composition, particularly with the diversity of weeds in North America. Currently the potential of HWSC vastly outweighs any drawbacks, necessitating further research. Such expanded efforts should foremost include chaff lining and impact mill commercial scale evaluation, as this will address potential limitations as well as economics. Growers must be integrated into large‐scale, on‐farm research and development activities aimed at alleviating the problems of using HWSC systems in North America and drive greater adoption subsequently. © 2020 Society of Chemical Industry Abstract : The article provides an overview of the current state of harvest weed seed control technologies and methods in North American cropping systems.