Featured Research

from universities, journals, and other organizations

How to restore native grasslands in the interior Pacific Northwest, U.S.

Date:
October 4, 2012
Source:
Allen Press Publishing Services
Summary:
Weed scientists in Oregon have found that the timing of herbicide application along with reseeding of native grasses offers the best recipe for restoring native grasslands while controlling invasive weeds. Grasslands are a valuable resource for ecosystems, providing soil conservation, food and fiber production, and wildlife habitat. When threatened by invading exotic species, the quality and quantity of forage for wildlife can be reduced, fire frequencies can be altered, soil moisture and nutrients can be depleted, and the costs of land management can increase.

Weed scientists in Oregon have found that the timing of herbicide application along with reseeding of native grasses offers the best recipe for restoring native grasslands while controlling invasive weeds. Grasslands are a valuable resource for ecosystems, providing soil conservation, food and fiber production, and wildlife habitat. When threatened by invading exotic species, the quality and quantity of forage for wildlife can be reduced, fire frequencies can be altered, soil moisture and nutrients can be depleted, and the costs of land management can increase.

A study in the journal Invasive Plant Science and Management evaluated various treatments with five herbicides over a period of 6 years. The experiments were carried out within the Wenaha State Wildlife Area in northeastern Oregon. The location is representative of the grasslands and ecoregion of the interior Pacific Northwest, where an exotic flowering plant, sulfur cinquefoil, is threatening native grasslands.

The study's experiments used two application rates and three application times for five herbicides. In addition, each experiment site had a seeded and unseeded treatment of native perennial grass seeds. The herbicide picloram provided the best control of sulfur cinquefoil. A one-time application of picloram reduced the abundance of sulfur cinquefoil during the 6-year period.

However, if the goal is to reduce all exotic species and restore native grasses, time is an important ingredient. Timing the application of herbicides is important so that they do not threaten desired native plants while attacking the invader. In the interior Pacific Northwest, most native species are dormant in the late summer and early autumn, making this the best time to apply herbicides for minimal effect on native plants.

The length of time required to manage invading species is another factor. While an herbicide may make inroads into reducing an exotic species of plant in 2 to 3 years, this does not mean that the native species will once again dominate. The best results were seen when reseeding of native grasses followed herbicide application.

During the first 3 years of this study, the reseeding trial experienced poor success. Growth was slow and the desired plants were small. However, as the evaluation of this program continued, native plants became successfully established by the sixth year. The seeding of native grasses reduced exotic grass cover by 20 percent.


Story Source:

The above story is based on materials provided by Allen Press Publishing Services. Note: Materials may be edited for content and length.


Journal Reference:

  1. Bryan A. Endress, Catherine G. Parks, Bridgett J. Naylor, Steven R. Radosevich, Mark Porter. Grassland Response to Herbicides and Seeding of Native Grasses 6Years Posttreatment. Invasive Plant Science and Management, 2012; 5 (3): 311 DOI: 10.1614/IPSM-D-11-00050.1

Cite This Page:

Allen Press Publishing Services. "How to restore native grasslands in the interior Pacific Northwest, U.S.." ScienceDaily. ScienceDaily, 4 October 2012. <www.sciencedaily.com/releases/2012/10/121004150641.htm>.
Allen Press Publishing Services. (2012, October 4). How to restore native grasslands in the interior Pacific Northwest, U.S.. ScienceDaily. Retrieved September 20, 2014 from www.sciencedaily.com/releases/2012/10/121004150641.htm
Allen Press Publishing Services. "How to restore native grasslands in the interior Pacific Northwest, U.S.." ScienceDaily. www.sciencedaily.com/releases/2012/10/121004150641.htm (accessed September 20, 2014).

Share This



More Earth & Climate News

Saturday, September 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

New Music With Recycled Instruments at Colombia Fest

New Music With Recycled Instruments at Colombia Fest

AFP (Sep. 19, 2014) Jars, bottles, caps and even a pizza box, recovered from the trash, were the elements used by four musical groups at the "RSFEST2014 Sonorities Recycling Festival", in Colombian city of Cali. Duration: 00:49 Video provided by AFP
Powered by NewsLook.com
Raw: Wildfires in CA Burn Forest Asunder

Raw: Wildfires in CA Burn Forest Asunder

AP (Sep. 18, 2014) An out-of-control Northern California wildfire has nearly 2,800 people from their homes as it continues to grow, authorities said Thursday. Authorities said a man has been arrested on suspicion of arson for starting the fire on Saturday. (Sept. 18) Video provided by AP
Powered by NewsLook.com
Raw: Elephant Undergoes Surgery in Tbilisi Zoo

Raw: Elephant Undergoes Surgery in Tbilisi Zoo

AP (Sep. 18, 2014) Grand the elephant has successfully undergone surgery to remove a portion of infected tusk at Tbilisi Zoo in Georgia. British veterinary surgeons used an electric drill to extract the infected piece. (Sept. 18) Video provided by AP
Powered by NewsLook.com
Raw: Scientists Examine Colossal Squid

Raw: Scientists Examine Colossal Squid

AP (Sep. 16, 2014) Squid experts in New Zealand thawed and examined an unusual catch on Tuesday: a colossal squid. It was captured in Antarctica's remote Ross Sea in December last year and has been frozen for eight months. (Sept. 16) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins