Weed Seed Longevity

Weed Seed Longevity Fact Sheet The Weed Science Society of America (WSSA) recently released a fact sheet that covers the main topic of weed seed longevity. Other topics addressed include how JSTOR is a digital library of academic journals, books, and primary sources. A collaborative blog by UC farm advisors and specialists in subtropical horticulture in California.

Weed Seed Longevity Fact Sheet

The Weed Science Society of America (WSSA) recently released a fact sheet that covers the main topic of weed seed longevity. Other topics addressed include how seeds travel, germination and ways to eliminate weeds.

Weeds are an ancient problem for small and large agriculturists. The new WSSA fact sheet helps to eradicate some weed issues. A few facts included in the resource are:

  • The broadleaf weed Palmer amaranth has been found to produce as many as a million seeds per plant.
  • Seeds of most annual weedy grasses die after two to three years.
  • Tillage is an especially common trigger of weed seed germination.
  • Earthworms are known to collect weed seeds and move them into their burrows.
  • Specially equipped airplanes have discovered horseweed seeds in the earth’s planetary boundary.

Find a free download of the weed seed longevity fact sheet at wssa.net, and check out the other interesting fact sheets on the WSSA website.

Weed Seed Longevity

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Weed Seed Longevity

From the UC Weed Science Blog

A repost and link today to a recent Weed Science Society of America press release entitled: “About Weed Seeds and Their Longevity” Click the link to go to the full article.

An excerpt from the press release and links to the free download:

Did you know some weed seeds can lie dormant in the soil for more than a century and then sprout when conditions are right? A new factsheet available for free download from the Weed Science Society of America (WSSA) dives into the topic of weed seed longevity, as well as how weed seeds travel, when and why they germinate, and ways they can be eliminated.

“Understanding weed seeds and their lifespan is critical for both farmers and backyard gardeners alike,” says WSSA member Greta Gramig, Ph.D., associate professor of weed science at North Dakota State University. “Seeds can remain viable in the soil for extended periods of time. That means if even a single weed is allowed to go to seed, you may be battling the aftermath for years to come.”

Here are just a few of the many facts about weed seeds that are covered in the new WSSA fact sheet:

  • Moth mullein seeds buried by a researcher in 1879 were still able to germinate more than 130 years later.
  • Weed seeds can easily be spread and transported far from their original location. Some have found their way into the earth’s planetary boundary.
  • Earthworms are known to collect weed seeds and move them into their burrows.
  • Weed seeds that remain dormant in the soil will often germinate in response to changes in temperature, moisture, oxygen or light.
  • Carabid beetles are voracious eaters and can consume large quantities of weed seeds that drop to the soil.
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In addition to its fact sheet on weed seeds, WSSA offers a variety of other free fact sheets and educational materials online, including infographics and presentations on herbicide resistant weeds and their management.