{"id":8705,"date":"2019-01-24T15:05:03","date_gmt":"2019-01-24T23:05:03","guid":{"rendered":"https:\/\/www2.nufarm.com\/ca\/?p=8705"},"modified":"2019-01-24T15:10:18","modified_gmt":"2019-01-24T23:10:18","slug":"resistance-management-part-2","status":"publish","type":"post","link":"https:\/\/2024.nufarm.com.au\/ca\/2019\/01\/24\/resistance-management-part-2\/","title":{"rendered":"It\u2019s time to talk about resistance management, again"},"content":{"rendered":"

Graham Collier doesn\u2019t mince words when he talks about herbicide resistance. \u201cWe have a serious problem in Western Canada,\u201d says the technical services manager for the Western Prairies with Nufarm Agriculture Inc.<\/p>\n

\u201cIf you are going to use herbicides on your farm, you have to expect that you will be selecting for resistance to those herbicides,\u201d he says. \u201cOver time, you remove the highly susceptible individual weeds and select for the ones that are tolerant for some reason, whether those weeds are truly resistant because of a physiological change or resistant in another manner.\u201d<\/p>\n

Collier gives the example of weeds that germinate later, after a herbicide application. \u201cThe weed population isn\u2019t physiologically resistant to the herbicide, but when you make an application at the same time each year you select for later germinating individuals, which over time makes up the bulk of the population,\u201d he says.<\/p>\n

Proactive is the way to go<\/strong><\/h2>\n

Weeds are tricky, and the best way to manage resistance development is with a proactive approach. The message is the same if you farm in Eastern Canada.<\/p>\n

Canada unfortunately ranks third in the world for the cases of herbicide resistance. We\u2019re behind Australia and the United States, but in many cases, Canada is building new cases of herbicide resistance faster than other countries.<\/p>\n

Collier is autely aware that academics and agronomists talk about the importance of managing herbicide use to reduce the development of resistance.<\/p>\n

\u201cIn Western Canada, we have more species and more populations within species that are developing herbicide resistance,\u201d says Collier. \u201cFrom rapid resistance to Group 2, glyphosate-resistant kochia, and several other weed species at risk of developing resistance to glyphosate including wild oats, cleavers, Russian thistle, and green foxtail.\u201d<\/p>\n

It\u2019s important to remember that weeds are mobile, they don\u2019t have to respect borders. \u201cWeeds are good at reproducing and distributing seed,\u201d says Collier. \u201cFor example, some weeds produce very few, large seeds with high survivability, while others produce thousands of small seeds that may not be viable for very long, and only a small percentage need to be viable for success.\u201d<\/p>\n

The trouble with kochia<\/strong><\/h2>\n

Kochia is an example of a weed that seems to have adapted well to the environment. It produces thousands of seeds per plant, can move via tumbling to distribute seeds, and will change its growth pattern depending on competition, moisture, heat and other available resources. \u201cA weed like kochia can distribute seed from field to field with assistance from the wind. It can also distribute genetic traits from field to field, being a cross-pollinated species,\u201d says Collier. \u201cWe can\u2019t stop pollen moving in the wind, but we can limit the spread of resistant weeds and the development of new resistant biotypes by following a few simple steps.\u201d<\/p>\n

So what can farmers do in their fields to slow the risk of resistant weed development?<\/p>\n

    \n
  1. Change up your farm practices<\/strong>. Do something different every year to throw weeds off their game. Weeds are smart but they thrive on routine so change it up and mess them up. Alter herbicide application timings or include an application timing you haven\u2019t before.<\/li>\n
  2. Rotate crops<\/strong>. Plant different crops and change up growing habits and competition levels in your fields.<\/li>\n
  3. Rotate herbicide mixtures<\/strong>. Use different modes of action and products with multiple modes of action. Rotate your tank mixes and change application timing.<\/li>\n
  4. Scout for survivors.<\/strong> After spraying get out in the field and see if you can find patches or individuals that were not controlled \u2013 testing for resistance to most modes of action is available in Canada. Finding and managing those patches\/fields early can save money and time in the long run.<\/li>\n
  5. Keep records<\/strong>. Knowledge is power. Keep track of what you\u2019ve done in the past and keep it easily accessible for planning next year.<\/li>\n<\/ol>\n

    Don\u2019t wait to start<\/strong><\/h2>\n

    From his perspective, James Ferrier says some growers are receptive to the resistance management message, but most growers wait until they see a resistant weed problem on their farm before they act. And by then, it\u2019s too late. As the technical services manager in Eastern Canada for Nufarm, Ferrier sees part of his role is to find technical and agronomic fits for Nufarm\u2019s products \u2013 especially as part of a strong resistance management plan.<\/p>\n

    \u201cWe focus on products with multiple modes of action and multiple actives that have little or no known resistance in the key segments where we are marketing,\u201d says Ferrier. \u201cAcross Canada, we are encouraging growers to rotate modes of action, rotate actives and rotate crops. Looking at the whole agronomic approach will help us delay herbicide resistance.\u201d<\/p>\n

    Want to find out more about your weed control options as part of a sound resistance management plan? Ask A Nufarmer at 1.800.686.5444, visit Nufarm.ca<\/a> and follow us @NufarmCA<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

    Graham Collier doesn\u2019t mince words when he talks about herbicide resistance. \u201cWe have a serious problem in Western Canada,\u201d says the technical services manager for the Western Prairies with Nufarm Agriculture Inc. \u201cIf you are going to use herbicides on your farm, you have to expect that you will be selecting for resistance to those …<\/p>\n","protected":false},"author":154,"featured_media":8708,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[593,643,501],"region_visibility":[466,467],"class_list":["post-8705","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-herbicide-resistance","tag-kochia","tag-resistance-management","region_visibility-east","region_visibility-west"],"acf":[],"_links":{"self":[{"href":"https:\/\/2024.nufarm.com.au\/ca\/wp-json\/wp\/v2\/posts\/8705","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/2024.nufarm.com.au\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/2024.nufarm.com.au\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/2024.nufarm.com.au\/ca\/wp-json\/wp\/v2\/users\/154"}],"replies":[{"embeddable":true,"href":"https:\/\/2024.nufarm.com.au\/ca\/wp-json\/wp\/v2\/comments?post=8705"}],"version-history":[{"count":4,"href":"https:\/\/2024.nufarm.com.au\/ca\/wp-json\/wp\/v2\/posts\/8705\/revisions"}],"predecessor-version":[{"id":12420,"href":"https:\/\/2024.nufarm.com.au\/ca\/wp-json\/wp\/v2\/posts\/8705\/revisions\/12420"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/2024.nufarm.com.au\/ca\/wp-json\/wp\/v2\/media\/8708"}],"wp:attachment":[{"href":"https:\/\/2024.nufarm.com.au\/ca\/wp-json\/wp\/v2\/media?parent=8705"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/2024.nufarm.com.au\/ca\/wp-json\/wp\/v2\/categories?post=8705"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/2024.nufarm.com.au\/ca\/wp-json\/wp\/v2\/tags?post=8705"},{"taxonomy":"region_visibility","embeddable":true,"href":"https:\/\/2024.nufarm.com.au\/ca\/wp-json\/wp\/v2\/region_visibility?post=8705"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}