Non-native grass threatens La. forests - KPLC 7 News, Lake Charles, Louisiana

Non-native grass threatens La. forests

The following is a news release from the LSU AgCenter:

ALEXANDRIA, La. – Forestry industry representatives attending an LSU AgCenter forum Tuesday (Feb. 22) at the Dean Lee Research Station were warned that a non-native grass threatens Louisiana forests.

The plant cogongrass is a weed that displaces native vegetation and prevents establishment and growth of young trees, said Hallie Dozier, assistant professor in the LSU AgCenter School of Renewable Natural Resources, 

"This is a big, bad super plant," Dozier said. "You really don't want to do battle with cogongrass."

The plant is native to Southeast Asia, and it is among the top 10 weeds in the world, she said.  "It is one of the reasons farmers in Africa never get ahead."

The weed has been a severe problem in Florida, she said, and it could be a serious threat to the timber business if it gets a foothold into the rich soil of Louisiana woodlands. "If we don't catch it in time in Louisiana, we are going to be sorry in 20 to 30 years."

It was first brought to the United States in 1912 as packing material and later as cattle forage in Mississippi and Florida.

Several factors make this plant a worrisome threat, Dozier said. 

It is drought tolerant. And unlike many native plants that slow down growth in extremely hot weather, it continues to grow, allowing it to out-compete native species, she said.

A new plant can grow up to 4 feet tall from a short piece of root. Mowing or burning only results in a lusher regrowth, Dozier said. And the plant leaves burn at a higher temperature than native grasses.

Cogongrass tolerates some shade, giving it the ability to encroach on forest edges and take advantage of canopy openings, such as those that may occur after a storm or harvesting. It is suspected of producing substances that retards the growth of other plants.

Dozier said her graduate studies included research on cogongrass in Florida.

"I don't ever want to see cogongrass infestations here like I saw in Florida," she said.

The plant can be attacked with the herbicides glyphosate and imazypyr, combined with deep tillage, revegetation and making sure that equipment used in areas with cogongrass has been cleaned to remove any plant materials.

"The time to act is now, so that if you spot a patch, you can take care of it while it's small."

Dozier's general descriptions of the plant's appearance include an off-center, white mid-rib. Details can be found online at http://www.cogongrass.org. A map of where the weed has been found in Louisiana is also available there as well as an article by LSU AgCenter weed scientist Dearl Sanders.

Wade Dubea, state forester with the Louisiana Department of Agriculture and Forestry, said 35 employees who fight forest fires will be laid off Friday (Feb. 25). That will leave only a statewide staff of 100.

"It's not much, and it concerns me greatly," Dubea said. Local volunteer fire departments will be asked for help when more personnel are needed.

Also at the forum, Public Service Commissioner Clyde Holloway said proposals for using woody biomass to generate electricity will be reviewed this year by the PSC. He said a pilot plant that will use wood as a feedstock has been proposed near the town of Olla.

"I truly believe we have a good chance to get that facility," Holloway said. The plant will be used to determine the cost of using renewable fuels to generate power.

But he opposes a facility that would require higher electricity rates.

North Louisiana is more suited for a power plant that would rely on wood as a fuel, Holloway said, because it has more of the feedstock and jobs are needed there.

Jody Bordelon of Cleco said the company's new Madison 3 power plant at Boyce has the capability of using wood to generate power in combination with the fuel petroleum coke, a byproduct of oil refining. He said a test burn using wood will be conducted this year, and potential suppliers of wood for the plant are being contacted.

The facility has the potential requirement of 1.6 million tons of wood, he said, but the intended supply will be wood not otherwise used for saw timber or pulp.

  • More Local NewsNewsMore>>

  • FIRST ALERT FORECAST: Rain chances going down next week; Alberto is now in the Gulf

    FIRST ALERT FORECAST: Rain chances going down next week; Alberto is now in the Gulf

    Saturday, May 26 2018 6:00 PM EDT2018-05-26 22:00:06 GMT
    Rain stays to our east on Memorial DayRain stays to our east on Memorial Day
    Rain stays to our east on Memorial DayRain stays to our east on Memorial Day

    After sunset, most of the rain will come to an end with the exception of a storm or two. Those will also wind down closer to 9:00 or 10:00. Most of the clouds will clear away, and the rain chances go back down to zero after midnight. The temperatures will still be warm and muggy tonight. Lows will be in the lower to mid 70s. Sunday will also have a few storms develop in the afternoon, but it will not be as many storms as we saw today. 

    More >>

    After sunset, most of the rain will come to an end with the exception of a storm or two. Those will also wind down closer to 9:00 or 10:00. Most of the clouds will clear away, and the rain chances go back down to zero after midnight. The temperatures will still be warm and muggy tonight. Lows will be in the lower to mid 70s. Sunday will also have a few storms develop in the afternoon, but it will not be as many storms as we saw today. 

    More >>
  • Phone lines down at Vinton Police Department

    Phone lines down at Vinton Police Department

    Saturday, May 26 2018 5:32 PM EDT2018-05-26 21:32:51 GMT
    (Source: KPLC)(Source: KPLC)

    Vinton Police Department's phone lines are down due to a lightning storm, according to Ricky Fox, police chief of VPD. Fox advises any Vinton residents with an emergency to call 911 directly. KPLC will notify the public once the lines are back up. Copyright 2018 KPLC. All rights reserved.

    More >>

    Vinton Police Department's phone lines are down due to a lightning storm, according to Ricky Fox, police chief of VPD. Fox advises any Vinton residents with an emergency to call 911 directly. KPLC will notify the public once the lines are back up. Copyright 2018 KPLC. All rights reserved.

    More >>
  • Free child passenger safety seat check in Lake Charles

    Free child passenger safety seat check in Lake Charles

    Saturday, May 26 2018 5:29 PM EDT2018-05-26 21:29:54 GMT
    (Source: Pablo)(Source: Pablo)

    This Saturday, the Louisiana Passenger Safety Task Force is hosting a free child passenger safety seat check event in Lake Charles, according to Sgt. James Anderson of Louisiana State Police.  Anyone who transports a young child in a vehicle is encouraged to take advantage of this service. Motor vehicle crashes are the leading cause of deaths in children, many of which can be prevented with proper seat checks, says Anderson.  Anderson says nationally certified child passen...

    More >>

    This Saturday, the Louisiana Passenger Safety Task Force is hosting a free child passenger safety seat check event in Lake Charles, according to Sgt. James Anderson of Louisiana State Police.  Anyone who transports a young child in a vehicle is encouraged to take advantage of this service. Motor vehicle crashes are the leading cause of deaths in children, many of which can be prevented with proper seat checks, says Anderson.  Anderson says nationally certified child passen...

    More >>
Powered by Frankly