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The Acadia Parish rice and soybean producers meeting will be held at the LSU AgCenter Acadia Parish office at 157 Cherokee Drive, Crowley, LA 70526 on January 5, 2012. The program for the meeting follows. For more information please contact County Agent Barrett Courville: bcourville@agcenter.lsu.edu

7:30 – 8:00 Registration and Coffee

8:00 – 8:30  Acadia Rice Growers annual business meeting – Mr. Jerry Leonards

8:30 – 8:45 Rice Production Update – Dr. Johnny Saichuk

8:45 – 9:00 Rice Variety Development – Dr. Steve Linscombe

9:00 – 9:15 Rice Weed Management – Dr. Eric Webster

9:15 – 9:30 Rice Disease Update  – Dr. Don Groth

9:30 – 9:45 Rice Fertilization – Dr. Dustin Harrell

9:45 – 10:00 Rice Insect Update – Dr. Natalie Hummel

10:00 – 10:15 Break Coffee and Donuts

10;15 – 10:30 Market Update – Dr. Kurt Guidry

10:30 – 10:45 LARPC and Rice Referendum

10;45 – 11:00 SPCC Update – Mr. Russ Green

11:00 – 11:15 Soybean Variety and management practices – Dr. Ron Levy

11:15 – 11:30 Soybean Insect Update – Dr. Jeff Davis

11:30 – 12:00 WPS and Private Pesticide Recertification – Barrett Courville and Allen Hogan

12:00 Lunch (Courtesy of Sponsors)

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We had an excellent crowd at the final stop of the LSU AgCenter south farm tour in Crowley, La this morning. For those of you that could not attend, here is what was discussed:

The RWW is the most important insect pest of rice in Louisiana. Adults enter fields either before or after permanent flood. Injury begins when adults feed on plant leaves, making longitudinal scars. If scarring is excessive the field will sometimes have the appearance of being “painted” with white paint. In some instances adult feeding can be severe enough to merit an insecticide spray before application of permanent flood. Mating commences soon after adults enter the field, but oviposition of eggs occurs after application of permanent flood. Larvae hatch from eggs, feed briefly within the leaf sheath, and then swim through the flood water to burrow into the mud and begin feeding on the roots of the rice plant. This larval feeding on the roots is the primary source of damage caused by rice water weevils when they attack the rice plant. In some cases, root pruning can be so severe that plants will fall over in the field. In other cases, root pruning in not severe enough to cause lodging but can still significantly reduce yield.

Acadia Parish – Simon Farm

Location: South of Crowley, LA – at the intersection of Leger and Nelson Roads.

You can find a map of the field site by clicking here. The purpose of this demonstration test is to compare currently recommended insecticides on commercial farms in Louisiana. This year are comparing three insecticide seed treatments (CruiserMaxx, Dermacor X-100 and NipsIt INSIDE) to an untreated check.

Cooperator County Agent Consultant Variety Seeding Rate
Glen & Wes Simon Barrett Courville Rustin Gilder XL745 22 lbs/ac
Date Activity Date Activity
3/16/2011 Planting 5/18/2011 Permanent flood
4/03/2011 Stand count 6/14/2011 RWW Core sampling

04/03/2011 – Stand counts – 2 weeks after seedling emergence

Method of data collection: Counting the number of plants and taking plant heights on ten randomly selected plants at five random locations in each strip.

We did not notice any obvious visual differences between seed treatments.

06/14/2011 – Core sampling- 4 weeks after application of permanent flood

Method of data collection: Core samples gathered by walking through the field pulling cores at equally spaced intervals across the field. 10 samples were taken in each cut (20 cores/treatment).

RWW core data is an average of 20 cores/treatment.

Treatment Average # rww
CruiserMaxx

1.5

Dermacor X-100

0.5

NipsIt INSIDE

1.15

Untreated

2.4

The infestation at this field site did not turn out to be severe enough to justify the cost of a seed treatment, but at some of our other test sites the infestations have been severe. We have collected up to 40 larvae in a single core. Once we are finished with all the core samples and can compare to the small plot trials Mike Stout is conducting at the LSU AgCenter rice research station, we will let you know how all the seed treatments have performed this season.

For Further Information:

If you have any questions about RWW management or this demonstration please contact your local County Agent Barrett Courville or LSU AgCenter Extension Entomologist Natalie Hummel at nhummel@agcenter.lsu.edu.

Acknowledgements:

We would like to thank all the cooperators, consultants, sales reps, and dealers participating in this trial. Generous support for this demonstration test has been provided by the Louisiana Rice Research Board, DuPont Crop Protection, Valent, Syngenta, FMC, G&H, and Landis International

A lunch was served that was sponsored by Dupont (Toby McCown), Syngenta (Josh Zaunbrecher), and Valent (John Bordlee). Rustin Gilder also provided a tent and tables for the lunch area. You can’t put a price on the value of shade in the middle of the summer (oh, wait, we are only two days in… guess it will be a long one). We appreciate their on-going support of the LSU AgCenter rice extension entomology program.

Rice stink bugs are starting to show up in some of the fields that are heading. I’ll post a blog about this pest tomorrow.

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CROWLEY, La. – An Acadia Parish field day covering research in rice and soybean production has been scheduled for June 15 at the South Farm of the LSU AgCenter Rice Research Station south of Crowley.

The field day will begin with registration at 8:30 a.m. and end with lunch at noon. Topics for presentation by LSU AgCenter scientists will include a rice disease update, rice variety development, soybean variety trials, rice fertilization, weed control and rice insect management.

The tour will start at 9 a.m. After touring the South Farm, the event will move to the nearby farm of Glen and Wes Simon where we have a rice water weevil insecticide demonstration test.

For more information, contact Barrett Courville, LSU AgCenter county agent in Acadia Parish, at 337-788-8821.

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Contact: Barrett Courville at 337-788-8821 or Bcourville@agcenter.lsu.edu

Writer: Bruce Schultz at 337-788-8821 or bschultz@agcenter.lsu.edu

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The summer rice field meeting season will kick off in Louisiana next week. Below is a list of the meetings and tentative agendas (if they are available). I hope to see you at some of the meetings. Please contact your local County Agent to confirm times, locations and speakers for meetings.

Evangeline Parish LSU AgCenter Cooperative Extension Service Annual Rice Field Clinic Tuesday, May 24, 2011

The Evangeline Parish LSU AgCenter Cooperative Extension Service will hold its Annual Rice Field Clinic Tuesday, May 24, 2011 beginning at 7:30 a.m.  This year’s clinic will feature variety trials, fertilization, weed, insects and diseases of rice.

Please join us on this day for a morning rice field clinic.  We will meet at the  Kody & Larry Bieber farm bins to begin the clinic with registration at 7:30. We will have some refreshments and snacks available on the site. The field clinic presentations will start at 8:00 am with the following agenda.

8:00—8:30      Variety Development at the variety plots along the road, Drs. Linscombe & Sha

Under the oak trees at the bins:

8:40—8:55        Ms. Karen Nix—Rice Insecticide Trials & Research project

8:55—9:15        Dr Saichuk—Growing Season Update, Field Situations

9:15—9:35        Dr. Salassi—Market Update 

9:35—9:55        Dr Webster—Herbicide Application Updates; Other ??

9:55—10:15      Dr. Groth—Fungicides; New Products,  Application Rates, Timing\

10:15—10:35    Dr. Harrell—Agronomy Research Plot Work

Plenty of refreshments and snacks will be served, courtesy of RiceTec seed.  Even though you may not be able to stay for the entire meeting, we would like to have you visit with us as long as you can.

The LSU AgCenter prohibits discrimination in all its programs and activities on the basis of race, color, national origin, gender, religion, age, disabilities, political beliefs, sexual orientation, and marital or family status.   Persons with disabilities, who require alternative means for communication of program information or other assistance, should contact the Evangeline Parish office of the LSU AgCenter at (337) 363-5646.

For more information, contact Keith A. Fontenot, County Agent/Parish Chairman.

2011 Southwest Rice Tour will be held on Wed. June 1st in Fenton and Welsh. 

Information will be provided on all aspects of rice production.  All interested person are invited to attend.  The following is the program for the field day:

9:00 – 9:30                   Coffee and Registration, Fenton CO-OP, Fenton

9:30 – 9:40                   Travel to Mr. Jimmy Hoppe’s Farm

9:40 – 10:00                 Rice varieties, Dr. Steve Linscombe and Dr. Sha Xueyan, Rice Breeding Rice Research Station

10:00 – 10:25              Rice Weed control update, Dr. Eric Webster, LSU AgCenter, Weed Science

10:25 – 10:40              Rice Disease Update, Dr. Don Groth, LSU AgCenter, Disease Pathologist

10:40 – 10:55              Rice Fertilization, Dr. Dustin Harrell, LSU AgCenter, Rice Research Station

10:55 – 11:10                Travel to Mr. Mark Pousson farm north of Welsh

11:10 – 11:25              Horizon Ag Clearfield variety plot, Mr. Michael Fruge

11:25 – 11:35              Rice Insect update, Dr. Natalie Hummel, LSU AgCenter, Entomologist

11:35 – 11:45              State rice update, Dr. Johnny Saichuk, LSU AgCenter, Agronomist

11:45 – 11:55              Travel to Welsh Community Center 

11:45 – 12:00              Market Update, Dr. Kurt Guidry, LSU AgCenter, Economist

12:00 – 12:30              Lunch courtesy of RiceTec

LSU AgCenter South farm rice research station field day on Wed. June 15th

The tour will conclude with a stop at the Acadia Parish rice water weevil demonstration test site where we will report our observations of the core sample collection. Lunch will be served – sponsored by Dupont, Syngenta and Valent.

LSU AgCenter Rice Research Station Field Day at the North unit will be Thursday June 30th   

For more information please contact County Agent Barrett Courville.

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This morning I admired the moon setting over University Lakes on my way into campus. Wait a minute, I was biking into campus by moonlight? Yep, a sure sign of field season – early mornings and long (but exciting) days. Today we headed down to Jefferson-Davis Parish to scout a couple of fields that were suffering from stand loss due to an unknown cause. In one location we are still trying to determine the cause. In the second field we scouted we confirmed a fairly severe colaspis infestation. We met with Farmer Kyle Fontenot, Consultant Ron Smith and Nicky Miller at the field which is located between Hathaway and Elton.
 

Kyle Fontenot, Anna, Nicky Miller, and Ron Smith. Note that Kyle and Nicky were both on their iPhones connecting with me on the blog and facebook.

 
Within a few minutes of digging we had no trouble finding many plants with colaspis larvae feeding on the roots, causing the plants to decline and eventually die.

Stand reduction in a hybrid rice field that was caused by colaspis larvae feeding on the roots of the plants.

 

We typically found the larvae on dying plants approximately 2 inches below the soil line.
A colaspis larva.
A colaspis pupa near the tip of a knife blade to give you an idea of the size.
 

 

It is worth noting the history of this particular field. In 2010 it was used as cattle pasture. To prepare the field for rice, the farmer plowed in the fall, burned the vegetation (with fire) in December/January, then plowed again, and finally plowed, shanked, and fertilized before planting. Rice was broadcast and then packed. The planting method made it even harder to determine the cause of injury because we did not observe the typical loss of plants along a drill row that we have seen in the past with colaspis infestations.

Visit this website for more information on the biology and scouting for colaspis in rice: http://www.lsuagcenter.com/en/crops_livestock/crops/rice/Insects/LSU+AgCenter+Rice+Training+Session+How+to+Scout+for+Grape+Colaspis+in+Rice.htm

This field was planted with hybrid rice seed that was treated with Apron, Maxim, Dynasty and Dermacor X-100. Dermacor has a registration for suppression of colaspis and previous research has indicated it will provide about 40% control. It is possible the injury would have been worse without the Dermacor X-100 treatment. If CruiserMaxx or NipsitInside would have been used, then we probably would not have experienced this much stand reduction. Dermacor was selected because of the history of rice water weevil pressure at the field site. It was determined that a replant was not necessary. At this point, the only option is to bring a light pin-point flood to hopefully stop the feeding of the colaspis larvae and prevent further injury of the rice.

I suspect that the colaspis problems may be more widespread. After they left this field Ron Smith called to say that they also found colaspis in another nearby field. I’ll be back down that way next week to further investigate the situation.

 

 

 
 

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Today Anna and I met with County Agent Barrett Courville and Crop consultant Rustin Gilder at the Acadia Parish demo site which is farmed by Glen and Wes Simon. We were pleased to find a healthy, rigorous stand of rice. Much of the field is already at tillering stage just two weeks after seedling emergence! This location was planted with XL745 at #25 seeding rate.

We used the same method as last year – counting the number of plants and taking plant heights on ten randomly selected plants at five random locations in each strip.

Anna Meszaros and Barrett Courville taking stand data in Acadia Parish.

We did not notice any obvious visual differences between seed treatments (at this location we are comparing CruiserMaxx, Dermacor X-100, NipsitInside to an Untreated check). The following series of pictures includes every possible side by side comparison of treatments:

Rice grown from CruiserMaxx treated seed to the right and Dermacor X-100 treated seed to the left.

Rice plants grown from CruiserMaxx treated seed to the right and Untreated seed to the left.

Rice grown from Dermacor X-100 treated seed to the right and NipsitInside treated seed to the left.

Rice grown from NipsitInside treated seed to the right and CruiserMaxx treated seed to the left.

Rice grown from seed treated with NipsitInside to the right and untreated seed to the left.

Rice grown from Untreated seed to the right and Dermacor X-100 treated seed to the left.

It was not difficult to find rice water weevil adult scarring in the field. We did not observe any rice water weevils.  The field had recently received a flush. It was difficult to assess a difference in the severity of scarring between treatments, but our sense was that it was a little more prevalent in the untreated strips.

Rice water weevil adult scarring injury on an untreated plant.

We will continue to monitor this field for any other insect problems that might occur. The next step will be to take rice water weevil core samples four weeks after permanent flood.

It sure is dry out there – we could use some good rain. In these dry conditions it is important to remember to actively scout for chinch bugs – they tend to thrive in these dry conditions, especially if weeds or pasture near a rice field start to dehydrate.

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On Friday I headed out to scout rice in Jeff Davis Parish with County Agent Barrett Courville and Consultant Rustin Gilder. We scouted a field where Rustin had found a single colaspis larva. After much time spent digging, we were not able to locate any additional larvae. Unfortunately with this pest, that is not confirmation that it was/is not in the field. The larvae may have pupated and emerged as adults, or we may have simply been searching in the wrong area in the field.

A video on how to scout for colaspis in rice can be accessed by clicking here.

The farmer planned to bring permanent flood soon. No insecticide seed treatments had been applied to the seed. Thus, due to the reduced stand from a combination of factors (poor germination, dry conditions, and probably colaspis injury), we advised using a pyrethroid to prevent further injury from rice water weevils. Rice water weevils were already active in the field, as indicated by feeding scars on the leaves. To further complicate matters, there are crawfish ponds nearby. To avoid pesticide drift on the crawfish ponds, we suggested using mustang impregnated on fertilizer both before and after application of permanent flood (based on scouting for adults after permanent flood). A strategy to control rice water weevils is particularly important in this situation, where the stand will be thin at the time of permanent flood and weevils are already actively feeding in the field. When the stand is thin, there tends to be a more severe infestation of rice water weevils.

During my discussions with the consultants and producers we met in the field, it sounds like a lot of rice is at or near permanent flood is southwest Louisiana. Many of the consultants also reported that rice water weevils were present in most of the fields. If you used a seed treatment (CruiserMaxx, Dermacor X-100 or NipsitInside) your rice should be protected from injury due to rice water weevil larvae feeding on the roots.

Keep in mind that if you plan to use a pyrethroid to control rice water weevils, it is important that the timing of the application is correct. The pyrethroid chemistries have a window of activity of about two to three days under ideal conditions. We recommend scouting for the presence of adults and/or feeding scars.

A video on how to scout for rice water weevils in rice can be accessed by clicking here.

Rice water weevil adult on a rice leaf.

Rice water weevil adult feeding scars. If these are present, then weevils are or were in the field.

If adults and/or feeding scars are present in the field you may consider using a pyrethroid to control the adults before they have a chance to lay eggs. Adult rice water weevils mate on the plants, and then the females swim below the surface of the water to lay their eggs in the leaf sheath below the water line. This is why it is important to kill the adults before they have a chance to lay eggs. Once the larvae hatch from the egg mass and swim down to the soil level to attack the rice roots, they can no longer be effectively controlled by a pyrethroid insecticide spray. Rice water weevils impact yield by feeding directly on the roots of the rice plants, causing pruning and negatively impacting the ability of the plant to take up soil nutients and produce an optimal yield.
 
Please contact your local County Agent for more information about rice water weevil management in Louisiana.
As a final note, please send me an e-mail if you find aphids or armyworms in rice in Louisiana. We need specimens for our laboratory colonies in Baton Rouge.

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