Posts Tagged ‘mexican rice borer’

I just received word from Bobby Simoneaux, Louisiana Department of Agriculture and Forestry, that the EPA approved a Section 24C (special local need) for use of Dermacor X-100 in water-seeded rice in all 64 Louisiana parishes. This registration will expire on 2/6/2017. The purpose of this registration is to combat the recent detection of Mexican rice borer reproducing populations in western rice producing parishes of Louisiana. This registration is in addition to the existing Section 3 registration of Dermacor X-100 in dry-seeded rice.

Dermacor X-100 can be applied by a certified seed treater. Your local certified seed treater can provide more information on this specific use pattern.  To learn more about the seed treatments read this article. I’m in the process of writing a new article on seed treatment options for 2012. Please contact me if you have any questions about the current insecticide seed treatment options in rice.

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The Louisiana Department of Agriculture and Forestry reported that Mexican rice borer (MRB) male moths have now been collected in pheromone traps in Jeff Davis Parish. These traps were positioned near Iowa, Thornwell, and just south of Welsh. The list of parishes infested with MRB now includes Beauregard, Cameron, Calcasieu and Jeff Davis. So far larvae were confirmed only in Calcasieu parish west of Lake Charles. If you grow or scout cane or rice in any of these infested parishes I strongly urge you to spend time this winter studying the biology and management of the MRB. If you find a larvae or moth that resembles the MRB in rice, cane or other grasses, please get it to your local County Agent for confirmation of identification.

We have created a variety of resources to help in your training about the MRB.

LSU AgCenter scientists prepared a website: Early Management Considerations for Mexican Rice Borer in Louisiana Rice: Click here to read the article. Within the website you will find links to the MRB identification card and field notes and blog postings about the MRB.

We conducted an entomology training at the LSU AgCenter rice research station in Crowley on Sept 13, 2011. The MRB was the primary topic discussed at the training. The powerpoint files are posted at www.lsuagcenter.comClick here to open the website.

The speakers were also video recorded. Here are the video links. Click on the link to open the file.

·         Part 1

·         Part 2

If you have trouble opening any of these links or you need more information on MRB, please contact me. The MRB will be a topic of discussion at the LSU AgCenter winter production meetings.

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The 3rd Annual LSU AgCenter Advanced Entomology training was held at the rice research station in Crowley on Sept 13, 2011. The training focused on secondary pest problems and the Mexican rice borer.

If you could not attend the training, or you just want a refresher of what was discussed, the powerpoint files have been posted at http://www.lsuagcenter.com. Click here to open the website.

The speakers were also video recorded. Here are the video links:

As you can tell from a lack of activity on this blog, the field season is winding down. We are summarizing our Tenchu rice stink bug demo data now and will be posting online soon. I hope you are enjoying this nice fall weather.

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The Mexican rice borer continues to move into rice producing parishes of Louisiana. In response to a recent increase in trap catches this season, and the presence of larvae in a rice field in Calcasieu Parish, LSU AgCenter scientists met at the rice station to develop a plan of action. We discussed many management strategies. These strategies are detailed in an article for Louisiana Farm and Ranch and are also posted at http://www.lsuagcenter.com. J. M. Beuzelin, M. O. Way, T. E. Reagan, M. J. Stout, N. A. Hummel, and J. K. Saichuk: Early Management Considerations for Mexican Rice Borer in Louisiana Rice: Click here to read the article.

On another note, we wrote a couple of articles for the latest edition of Louisiana Agriculture magazine on rice water weevil management and rice/crawfish crop rotations.  Click here to read the rice/crawfish article  and here for the rice water weevil management article.

I hope your season is wrapping up nicely.

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I apologize that I haven’t written in a while. We are moving into grant-writing “season”. We are writing a few proposals that address new rice pest problems. You’ll hear more about those projects if they are funded. Just a quick update on the latest news.

We continue to receive reports of rice stink bugs in second crop rice, in some cases with very severe pressure. You can read about this by clicking here. I also received a call today asking what the Re-entry interval for Tenchu 20SG is. The answer is 12 hours – so this means you can safely enter the field 12 hours after the insecticide application.

We have also had some reports of armyworms in crawfish rice – this is in the Evangeline Parish area. Remember that the only thing registered is BT type products, which are really only effective controlling smaller caterpillars. Any other insecticides have the possibility of killing crawfish stocked in the pond.

The LSU AgCenter Extension Entomology program has a couple of trainings this month.

Next week we have the annual advanced entomology training at the Rice Research Station in Crowley on Tuesday, Sept 13 from 9 am to noon. I hope you can join us. I’ll start off by talking about early season pest problems (chinch bugs, bill bugs, sugarcane beetles, etc.). Then we will spend the rest of the training talking about Mexican rice borer management recommendations. Click here for a link to the agenda. We will have three speakers. Speakers will include Mo Way from Texas A&M AgriLife. Mo has studied the MRB for more than 20 years and has graciously agreed to share his insights with us. Dr. Julien Beuzelin (recent graduate of LSU) will talk about his research studying the biology, behavior and secondary host plants (weeds) of MRB. Finally, I will give a presentation on management recommendations and opportunities for cooperators to help us expand the pheromone trapping program. We will have plenty of time for questions from the audience.

Later this month, Gene Reagan and Mo Way are co-hosting their annual MRB site visit in Beaumont, Texas on September 27 to 28, 2011. This is an excellent opportunity to gain first-hand experience scouting for MRB in the field. You will also have the opportunity to learn about the latest research on this pest.

If you are using social media, you are welcome to join the LSU AgCenter Rice Entomology Facebook group page. This is a great place to keep up to date on the latest observations from the field and to share your knowledge with others. Click here to join the group. If you don’t have a Facebook account, you’ll need to create an account first and then request to join the group.

I look forward to seeing many of you at the meetings this month.

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As the MRB continues to spread across Louisiana, it is becoming more critical for those associated with the rice and cane industries of Louisiana to become familiar with identification, biology and management of this pest. Drs. Gene Reagan (LSU AgCenter) and Mo Way (Texas A&M Agrilife) are hosting their annual Sugarcane Field Research Site Visit in Beaumont, TX on September 27 and 28, 2011. Louisiana and Texas Sugarcane and Rice Consultants, Agricultural Extension Agents, and Industry Cooperators are invited and encouraged to attend.

Tuesday, 27 September – 6:15 pm                 Meet in lobby of Holiday Inn and Suites to go to dinner probably at Papadeaux’s (optional)

Wednesday, 28 September – 8:00 am         Meet in front of Texas  AgriLife Research and Extension Center:

Please do not take any live insects from this location! 

Texas AgriLife Research and Extension Center  at Beaumont, 1509 Aggie Drive, Beaumont, TX 77713

DIRECTIONS TO RESEARCH SITE:     9.5 miles west of Beaumont on Hwy 90, ~ 1 mile north on Aggie Drive 

Dr. Ted Wilson (Center Director): Welcome and introduction

Dr. Gene Reagan: Overview of planned activities, handouts, and instructions to go to the field


  1. Dr. Bill White: Variety diversity in the test
  2. Dr. Gene Reagan, Dr. Julien Beuzelin, and Mr. Blake Wilson: Hands-on sampling for Mexican rice borer ( MRB) and sugarcane borer (SCB) injury in sugarcane varieties
  3. Mr. Blake Wilson: Use of MRB pheromone traps to help with scouting.
  4. Dr. Julien Beuzelin and Mr. Matt VanWeelden: Multi-crop bioenergy research.
  5. Dr. Mo Way: Observe MRB and SCB damage and discuss insecticides and cultural practices in rice
  1. Observe MRB and SCB larvae in replicated test of Louisiana sugarcane varieties (HoCP 08-726, Ho 08-711, L 08-092, HoCP 91-552, L 07-57,Ho 08-706, Ho 08-717, L 79-1002, Ho 02-113, HoCP 04-838, L 08-090, HoL 08-723, Ho 08-709, HoCP 00-950, Ho 07-613, L 08-088, L08-075, HoCP  85-845, Ho 05-961)

or visit demonstration of sugarcane stalk splitter machine (Gene Reagan).

Wednesday, 28 September – 11:00 am           Sun grant/Chevron/Beaumont energy cane and high biomass sorghum research near main building, Texas AgriLife Research and  Center at Beaumont, 1509 Aggie Dr., approx. 9 miles west of Beaumont on Hwy 90.

Wednesday, 28 September – Noon                 Adjourn and return home


Holiday Inn and Suites

3950 I-10 South

Beaumont, Tx 77705

409-842-7822 (hotel)

409-842-7810 (fax)

For hotel reservations call 409-842-5995

Any time prior to Tuesday, 20 September                   Reservation Code: LSU Entomology

You may reserve rooms with Samantha by email at: samantha.richards@jqh.com

$79.00 + tax reduced rate, Breakfast buffet (6:00 AM) included

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The training was video-recorded and the streaming video has now been posted online. Click here to view part 1. Click here to view part 2.


The advanced rice entomology training is back by popular demand. I had initially hoped to focus this training on the diversity of insects that occur in a rice field (pest, beneficial, and just plain interesting aquatic insects). Unfortunately, the continued movement of the Mexican rice borer (MRB) into rice country is an important issue which trumps the aquatic entomology focus for this year. The LSU AgCenter is currently developing management recommendations and an educational program on the MRB. This information will be discussed at the training.

Below is the agenda for the training and some tentative speakers:

Date: September 13, 2011

Time: 9 am to noon with lunch served

Location: LSU AgCenter Rice Research Station Auditorium in the main building

9 am to 9:15 – registration

9:15-9:30 – welcome and purpose of training

9:30-10 – Secondary Pest Problems – early season issues and late-season stink bug management (Hummel)

10-10:30 – Mexican rice borer identification and host preferences (Speaker TBA)

10:30 – break

10:45 – 11 – Mexican rice borer insecticide management strategies (Speaker TBA)

11-11:30 – MRB management recommendations and monitoring strategies (Hummel)

11:30 – Discussion/questions

Noon – Sponsored lunch – provided by Toby McCown (Dupont), Josh Zaunbrecher (Syngenta) and John Bordlee (Valent)

This training will not be available to attend remotely, but it will be recorded for viewing at a later date.

This training will qualify for CCA CEU credits.

I hope to see you at the meeting.

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