More
    AgronomyDicamba drift a new danger for potato growers

    Dicamba drift a new danger for potato growers

    -

    Crop damage caused by herbicide drift should be a risk on Manitoba potato producers’ radar this year.

    Soybean producers are gearing up to plant Roundup Ready 2 Xtend soybeans following European Union approval last summer. The soybeans are tolerant to both glyphosate and dicamba herbicides.

    But dicamba drift can cause irreparable damage in neighbouring potato crops, said Andy Robinson, a North Dakota State University extension potato specialist, during a presentation on herbicide drift at this year’s Manitoba Potato Production Days.

    “Potatoes are sensitive to many herbicides,” said Robinson.

    Exposure can result from soil carry-over, particle drift, contamination of spraying equipment, volatilization, misapplication and spot spraying.

    Particle drift is a common culprit. Robinson pointed to research showing particles sized five microns in diameter can travel laterally up to three miles, compared with larger droplets sized 400 to 1,000 microns in diameter, which can travel around 8.5 to 4.7 feet respectively.

    The new dicamba technology is a big deal for soybean producers, said Robinson, but it carries the risk of drift or off-site movement.

    “We want producers to understand the ramifications on off-target movement of herbicides,” said Robinson in an interview.

    Potato plants injured by dicamba spray exhibit epinasty, stem twisting and leaf cupping and stem swelling and elongation, while tubers are malformed.

    Robinson has completed a study looking at the impacts of dicamba and glyphosate residues on potato. Data will be included in a forthcoming publication, but the study showed that exposure to the two herbicides reduced marketable yield and size over multiple years.

    “These herbicides are not friendly to potato,” said Robinson.

    Source: PotatoPro

    Trending This Week

    Tractor in freshly plowed potato field

    Prepping Your Potato Seed for Spring — Webinar and Podcast

    0
    A good potato crop starts with good seed. If you don’t have quality seed then you’re holding back your crops potential. Should you cut...
    Railway tracks

    CP Rail Purchase of Kansas City Southern Approved

    0
    The purchase of Kansas City Southern Railway Company by Canadian Pacific Railway Limited has been approved by the United States Surface Transportation Board (STB) with conditions, a March 15 decision posted online said.
    Seed potato storage

    Prepping Your Potato Seed for Spring

    0
    What you need to keep in mind to get your potato seed ready for planting this spring. Experts Editor’s note: This interview has been edited for...
    Fresh Potato Beds

    Reduced Irrigation Yet More Yield and Better-quality Potatoes

    0
    My favourite part of my job is learning from producers who speak personally about real challenges and real opportunities in their own fields. At...
    Radish Cover Crop

    Servicing Your Soil through Cover Cropping

    0
    Cover cropping is an important part of keeping your soil in good health. Soil is an important part of the farm, just as crucial as...