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Posts Tagged ‘acadia’

Wow – 2012, yes, it’s right around the corner. I’ll bet you are asking the same question as me – where did 2011 go???

The rice winter meeting dates are now being announced. In this post I list all the dates I have received so far and over the next week I’ll send you more details on the specific programs. I will be speaking at all of these meetings – the topic will vary depending on the parish and the problems we observed last season. Please feel free to email me or your local county agent for more information on the meetings.

Meeting season will kick off with the Southwest Louisiana Rice and Soybean Forum in Welsh, LA on Jan 3, 2012. The Evangeline Parish rice and soybean meeting will be held the morning of Jan 4, 2012 in Ville Platte, LA. The next meeting will be the Acadia Parish Rice and Soybean school at the LSU AgCenter Acadia Parish office in Crowley. The week will wrap up with the Vermilion Rice School in Kaplan, LA on Jan 6, 2012. The Avoyelles Parish Rice meeting is scheduled for Jan 11, 2012 in Bunkie, LA. The final meeting I have on my calendar is the Northeast Louisiana Rice Forum in Rayville, LA on Jan. 26, 2012. On the evening prior to this meeting, the Louisiana rice growers association will hold their annual meeting in Crowley on Jan. 25, 2012. We will have the pleasure of receiving updates from USA Rice representatives.

For more information on the meetings I listed, please contact the following county agents:

Southwest Rice and Acadia Parish – Barrett Courville: bcourville@agcenter.lsu.edu

Evangeline Parish – Keith Fontenot: kfontenot@agcenter.lsu.edu

Vermilion Parish – Stuart Gauthier: sgauthier@agcenter.lsu.edu

Avoyelles Parish – Rob Ferguson: referguson@agcenter.lsu.edu

Northeast Louisiana – Keith Collins: kcollins@agcenter.lsu.edu

I hope to see you at one (or more) of the meetings this winter.

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USDA-RAMP Project Workshop

Rice Mill Insect Pest Management
Optimizing Insect Control and Grain Quality
Louisiana (Crowley) – Tuesday, May 10 (9:00AM – 3:00PM)
Acadia Parish Extension Office
157 Cherokee Drive
Crowley, LA 70526

Contact:
Thomas E. Reagan (Louisiana State University Agricultural Center)
Phone: (225) 578-1824
Email: treagan@agctr.lsu.edu

Workshop Agenda (9:00 – 3:00PM)
 Opening Remarks (Thomas E. Reagan)
 Project History and Perspective (Lloyd Ted Wilson)
 Insect Pest Management for Rice Storage and Milling (Frank Arthur)
 Monitoring Stored-Product Insects Inside and Outside Rice Mills (James Campbell)
 Dynamics of Storage Pests around a Rice Mill in Northeast Arkansas (Tanja McKay)
 Impact of Lesser Grain Borer Infestations on Milled Rice Quality (Frank Arthur & Terry
Siebenmorgen)
 Economics of Storage Grain Pest Control (Brian Adam)
 Integrated Storage Grain Pest Management and Tool Delivery (Ted Wilson and Yang)
 Closing Remarks and Participant Feedbacks (Thomas E. Reagan)
Lunch: Participants will have the option to sign up and pay for their lunch

Presenter Affiliations
Brian Adam Oklahoma State University
Frank Arthur USDA-ARS Center for Grain and Animal Health Research, Kansas
James Campbell USDA-ARS Center for Grain and Animal Health Research, Kansas
Tanja McKay Arkansas State University
Thomas Reagan Louisiana State University AgCenter
Terry Siebenmorgen University of Arkansas
Ted Wilson Texas A&M AgriLife Research
Yubin Yang Texas A&M AgriLife Research

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It’s that time of the year again, all the rice folks hunker down for Christmas break and then hit the roads running to winter rice meetings across the state.  The first week of January will be busy, followed by a smattering of meetings throughout the month.  This post provides information for the meeting plans that have been finalized to date.  Please contact your local county agent for information on meetings in your region. 

Merry Christmas and Happy New Year!  I look forward to seeing you in 2011.

DISCLAIMER: please contact your local County Agent to verify the time, location, and program for this meeting.

Southwest Louisiana Rice and Soybean Forum, January 4, 2011, Welsh Community Center. Agenda follows:

8:00 a.m.                                     Welcome……………………………………………………………… Allen Hogan & Barrett Courville

8:05 a.m. – 8:30 a.m.              Rice Production Practices for 2011………………… Dr. Johnny Saichuk, LSU AgCenter Rice Specialist

8:30 a.m. – 8:55 a.m.              Rice Variety Update…………………………………… Dr. Steve Linscombe, LSU AgCenter Rice Breeder

8:55 a.m. – 9:25 a.m.              Rice Weed Management…………………………………. Dr. Eric Webster, LSU AgCenter Weed Scientist

9:25 a.m. – 9:50 a.m.              Rice Disease Management………………………………….. Dr. Don Groth, LSU AgCenter Plant Pathologist

9:50 a.m. – 10:15 a.m.            Rice Fertility…………………………………………………. Dr. Dustin Harrell, LSU AgCenter Agronomist

10:15 a.m. – 10:30 a.m.          Break

10:30 a.m. – 10:55 a.m.          Rice Insect Management……………………………. Dr. Natalie Hummel, LSU AgCenter Entomologist

10:55 a.m. – 11:20 a.m.          Rice and Soybean Market Update………………………. Dr. Kurt Guidry, LSU AgCenter Economist

11:20 a.m. – 11:45 a.m.          Soybean Varieties & Management Practice………… Dr. Ronald Levy, LSU AgCenter Soybean Specialist

11:45 a.m. – 12:30 p.m.         Lunch

12:30 p.m. – 12:55 p.m.         Soybean and Wheat Disease Management……….. Dr. Boyd Padgett, LSU AgCenter Plant Pathologist

12:55 p.m. – 1:20 p.m.           Soybean Weed Control……………………………………….. Dr. Jim Griffin, LSU AgCenter

1:20 p.m. – 1:30 p.m.             Soybean Demonstrations……………………………………….. Allen Hogan

2011 Evangeline/St. Landry Rice & Soybean School, Wednesday, January 5, 2011.  Please contact County Agent Keith Fontenot for an agenda and directions.

Acadia Parish, Rice & Soybean Producers Meeting, Thursday, January 6, 2011.  Acadia Parish LSU AgCenter office. Please contact County Agent Barrett Courville for more information.  Agenda follows:

7:30-8:00 a.m. Registration & Coffee

8:00-8:10 a.m. Introductions……………………………………………………………………….Barrett Courville, County Agent, LSU AgCenter

8:10-8:30 a.m. Rice Growers Annual Business Meeting……………………………………….Jerry Leonards, President

8:30-8:50 a.m. Rice Production Practices for 2011……………………………………………..Dr. Johnny Saichuk, Rice Specialist, LSU AgCenter

8:50-9:15 a.m. Rice Variety & Breeding Update…………………………………………………Dr. Steve Linscombe, Rice Breeder, Rice Experiment Station, LSU AgCenter

9:15 – 9:35 a.m. Rice Weed Management………………………………………………………….Dr. Eric Webster, LSU AgCenter

9:35-9:55 a.m. Rice Disease Control Update……………………………………………………….Dr. Don Groth, Pathologist, Rice Experiment Station, LSU AgCenter

9:55-10:15 a.m. Rice Fertility & Agronomics……………………………………………………..Dr. Dustin Harrell, LSU AgCenter

10:15-10:35 a.m. Rice Insect Control………………………………………………………………..Dr. Natalie Hummel, Entomologist, LSU AgCenter

10:35-10:45 a.m. Break – Coffee & Donuts

10:45-11:00 a.m. Rice & Soybean Market Update………………………………………………..Dr. Kurt Guidry, Economist, LSU AgCenter

11:00-11:20 a.m. Soybean Production Practices………………………………………………….Dr. Ronnie Levy, Soybean Specialist, LSU AgCenter

11:20-11:40 a.m. Soybean & Wheat Disease Update……………………………………………..Dr. Boyd Padgett, Plant Pathologist, LSU AgCenter

11:40-12:00 p.m. Soybean Weed Control Update………………………………………………… Dr. James Griffin, LSU AgCenter

12:00-12:15 p.m. Environmental Regulatory Issues……………………………………………. Randy Jemison, USA Rice

12:15-1:00 p.m. Lunch – Courtesy of Sponsors

1:00-1:30 p.m. WPS Regulations & Training……………………………………………………….Barrett Courville, LSU AgCenter

1:30-1:45 p.m. Pesticide Re-Certification……………………………………………………………Department of Agriculture & Forestry

The 38th Annual Vermilion Rice School is scheduled for Friday, Jan. 7, 2011 at the American Legion Home in Kaplan.  For more information please contact County Agent Stuart Gauthier.

The Northeast Louisiana Rice Forum will be held Wednesday, Jan 26, 2011 at the Rayville Civic Center. For more information, please contact County Agent Keith Collins.

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We have finally concluded all of the core sampling for our demonstration test this production season.  We have gathered all the data and Anna conducted a statistical analysis.  In this analysis each location is treated as a replicate.  

Our demonstration test was conducted in all the Louisiana parishes highlighted in purple.

 

We had a total of 15 sites included in our test this year.  We started this season with 5 locations designed to evaluate rww management tactics.  An additional 5 sites were set up to evaluate colaspis management.  We did not have any colaspis infestations in the test sites.  We gained three more weevil test sites that had been planted out either by seed companies or a cooperator, who requested we take samples.  We wound up with a total of 10 locations that were included in the overall data analysis.  More than 500 core samples were processed to generate this dataset – that’s a lot of backbreaking work to pull all the cores and then to wash all that mud from the  roots!  Thanks to our cheerful, hardworking crew for completing this task without complaint.  

We collected weevil cores from all sites 4 weeks post flood.  Our standard method is to take 10 cores per treatment, in a zig-zag pattern across the field, making sure to pull cores from the edge and middle of the cut.  

   

A few trends broke out in the dataset.  In Acadia and Jeff Davis Parishes, we had a relatively light infestation with weevils, except at one location (Lawson Farm) where we had about 10 larvae per core in the untreated check.  In Vermilion Parish we had low to moderate infestations.  In Concordia Parish we had an average of 10 larvae per core in the untreated check.  In Evangeline Parish we had a relatively severe infestation with untreated counts averaging from 10.8 rww larvae per core at the LaHaye farm to 15 larvae per core at the Morein farm site. Our highest population was in St. Landry Parish where we had an average of 21.9 larvae per core in the untreated check.  While, in Tensas Parish (our most northern location) we had an extremely light infestation with zero larvae per core in the untreated check and the highest count of 0.15 larvae per core in the Dermacor X-100 treated cut.  Interestingly at this location, we had a fairly severe infestation in the 2008 production season.  The  graph that follows summarizes the average number of rww larvae per core when we analyzed the entire dataset.  

Average number of rice water weevil larvae per core (calculated from 10 cores per field or cut). Different letters indicate a significant difference in the treatment effectiveness.

 

Overall, Dermacor X-100 provided the best level of weevil control, followed by pyrethroid (either Karate pre,Karate pre + mustangMax on fertilizer post, or Karate post) and CruiserMaxx.  Dermacor X-100 provided significantly better control than the other two treatments.  There was no signficant difference in the core sample average between the pyrethroid and the CruiserMaxx seed treatment. 

Unfortunately, the results from the Hybrid test plots (25 pound or less seeding rate) did not provide any more clarity about the ability of CruiserMaxx to provide effective weevil control at the low seeding rates.  We plan to repeat the demonstration test again next season, particularly focusing on the low seeding rate question.  Mike Stout has some small plot replicated research that may also clarify the question of effectiveness of CruiserMaxx at low seeding rates as currently labeled.  

This was certainly an interesting weevil season, and we learned a lot about weevil management, and just how difficult it can be to scout for adults and properly time insecticide applications.    

We greatly appreciate the support and cooperation of all who are involved with the demonstration test.  Please contact your local county agent, or me, if you have any questions about our observations this season. 

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UPDATE on Tuesday, April 21, 2010:
So far, the aphids have not developed into a problem at any of our field test sites.  I have spoken with quite a few county agents and consultants about the aphid situation this season.  It seems like we have had more than the usual infestation of aphids.  It looks like a combination of flushing and biological control (predators and parasitoids) have kept the populations under control.  Please contact your local county agent if you see anything that indicates otherwise.  I’ll be out in Acadia Parish tomorrow looking at some of our field sites.  About two weeks ago the rice was just emerging at the Hoffpauir demo site in Rayne, La.  The rice was around first leaf stage, and some aphids were present.  Tomorrow, I’ll look closely for any existing aphids when we take stand counts and plant heights.
 
Hope your crop is progressing well.
 
Natalie
………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….
Well the phone started ringing Monday morning with reports of aphids in rice.  This really isn’t surprising since we have had such cool weather conditions.  I called up Dr. Jeff Davis (LSU AgCenter Soybean Entomologist) to see if he would like some samples for aphid colonies he is establishing.  Jeff headed out to the field yesterday and was able to collect samples and (conveniently) identify them to species.  It’s really handy to have an aphid expert in the department.  Jeff collected aphids in Acadia and Evangeline Parishes.

Below is an excerpt from an e-mail he sent after he completed the identifications:   

“We saw a lot of parasitism at both locations.  In Ville Platte, there were aphids on the grasses in the field as well as parasitoids.  This may indicate that the aphids were on the grasses and when growers applied their herbicide, the aphids moved to the emerging rice.  Recommendation:  Good weed control early and prior to emergence so aphids do not move to young rice.  No aphids [observed] on the Cruiser treated seed.  I do not know how long this will last.  In soybean, we typically get 30 day control.   

Aphid Identification:          

  • Crowley:  All bird cherry-oat aphid, Rhopalosiphum padi
  • Ville Platte:  60% English grain aphid, Sitobion avenae; 30% bird cherry-oat aphid, Rhopalosiphum padi; and 10% greenbug, Schizaphis graminum”

I was able to get out to the field today to scout some fields and view the situation.  The first stop was at the LaHaye rww demonstration site.  Kenneth was starting to flush the field.  There is a good chance that flushing might take care of the aphid problem.  We saw a lot of aphids on the rice, which is at the first leaf stage of growth.   

Flush moving onto the field.

The little specks on the rice seedlings are aphids. You'll need a hand-lens to see the details.

 

I agree with Jeff that this problem is caused by a combination of factors:   

  1. Burndown applied immediately before planting.  These aphids are feeding on weeds in the field, and when the weeds start to die they move onto newly emerged seedlings.  If there was a way to have more time between burndown and planting, that would probably help this situation.  I do realize that we are restricted by the weather. 
  2. Cool weather.  Aphids can establish on seedlings and will likely cause more damage on slow growing rice.

We observed a lot of parasitized aphids on weeds that were dying from the herbicide applications.   

Parasitized aphids on a weed that was dying from exposure to the burn-down herbicide.

 

I can make a few generalized statements about our observations:   

  1. aphids were more abundant in stands of rice that did not have a seed treatment.
  2. it appeared that the CruiserMaxx provided protection from the aphids, although this is a natural infestation and we are not looking at a small plot evaluation test, so this observation is not conclusive. 
  3. predators and parasitoids were abundant, and may be able to provide control, if given enough time (for pictures, continue reading).
  4. plants did not look stressed by the infestation.

        

Recommendations:   

We do not have standard recommendations or thresholds for treatment of aphids in rice.  Proper identification is the first step in deciding the course of action.  Some species of aphids produce toxic saliva that can cause stunting or death of small seedling rice.  In the past it has been noted that when the fields are flushed, weather warms up, and rice begins to grow, there is no need for treatment.  Also, if predators and parasitized aphids are observed in the field, you should continue to monitor the situation and avoid treating unless the plants begin to look stressed.  One field in Evangeline was treated with Karate on Monday.  I scouted the field today and did not see any insects.  Note that any predators were present they were also killed by the pyrethroid spray.  If your pyrethroid spray is not adequate, and the aphid population returns, but with no predators in the field, then you could really be in a bind.  I recommend waiting a few days to pull the trigger, monitor the health of the rice, and look for predators.  If you have questions about treatment, please contact your local county agent.   

Below are some pictures of what we saw in the LaHaye demo fields.    

Adult and immature aphids on leaf blade.

 

Aphids were walking around on the dry soil looking for plants to feed on.

 

Alate aphids have wings, and apterates are wingless.

 

Fortunately, we also found an abundance of predators and parasitoids that are decreasing the aphid population.  This included ladybug larvae and adults, syrphid fly larvae and also parasitic wasps.   

A ladybug larva devouring an aphid.

 

 Ladybugs will eat aphids both in the larval and adult phases.   

The pupal stage of the ladybug beetle - this is the phase between the immature and the adult stages.

 

 The pupal stage is the resting phase between the larva and the adult.   

A ladybug adult. Adults will also eat aphids.

 

A ladybug larvae eating an aphid.

 

Ladybug larvae are definitely voracious predators.  I’m not sure how flushing will affect these predators.  We’ll scout toward the end of next week to see what the predator population looks like after a good flush.   

A parasitoid wasp on a weed in the rice field.

 

Parasitoid wasps control the aphids by producing offspring that devour the aphid from the inside out.  The parasitized aphid turns into a mummy, which is round, shiny and often tan, gold or black in color.  If the wasp has emerged, you will see a round hole in the mummy.

Healthy aphid (green) and parasitized aphid (round and dark color) on a rice seedling stem.

 

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Avery Davidson put together a very nice story about the rww demonstration test which aired on TWILA last week.  You can view the video online at youtube by clicking here.  Thanks to Keith Fontenot and Kenneth LaHaye for participating in this interview.  We appreciate the continuing support of the Louisiana Farm Bureau.

The Hoffpauir demonstration site was planted last week.  County Agent Barrett Courville sent me a few pictures of planting.  At this location we will compare an untreated cut to pyrethroid, Dermacor X-100 and CruiserMaxx insecticide treatments.  The arrangement of cuts at this site allowed us to plant multiple fields with each seed treatment.  So, we will get a little more data than usual at this location.

Darryl Hoffpauir riding on the drill as the untreated check is planted. Photo by Barrett Courville.

This week, we will most likely be planting three more demonstration sites, one each in the following parishes: Concordia, Jeff-Davis, and Vermilion.  I’ll keep you informed as planting progresses.

At the rest of the sites, we are waiting for the first call to report observation of plant emergence.  I think this cold weather is making the plants lazy.  They don’t seem to want to leave the soil.

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Today we planted a Horizon Ag Strip Trial at the Lawson Farm in Crowley, La.  At first, we weren’t sure if the soil was dry enough, and there was also a light crust on the soil.

Rain the previous week had left a crust on the soil.

The soil did not want to close over the drill passes - went to plan b.

We were not happy with this drill row appearance - seed is not adequately covered.

After breaking the crust with a harrow, we were able to drill the seed.

Lightly and quickly running a harrow before the drill broke up the crust enough to allow closure of the drill rows.

This test will compare CruiserMaxx and Dermacor X-100 to an untreated check.

Treated seed receives a dye - on the left is CruiserMaxx treated seed and on the right is untreated seed.

We will be looking for colaspis activity in addition to rww efficacy.  A number of clearfield varieties were planted.

In a nearby field, we will compare a variety of seeding rates with CruiserMaxx treatment.  This will help us answer some of the questions about CruiserMaxx activity at lower seeding rates. RWW core samples will be taken 4 weeks after permanent flood to assess insecticide activity.

There is nothing like the appearance of straight, newly planted drill rows. I was impressed by the driving – no GPS used here!

We will be closely watching these two fields for first emergence of seedlings.  Previous research in Arkansas has found that Cruiser treated seed emerges more quickly than untreated seed.  Also, the first two weeks after emergence are a critical time to monitor for damage from colapsis larvae.

I anticipate that we will be planting all over the place next week – if it doesn’t rain Saturday.  The instructions are to pray for NO RAIN.  Tomorrow morning we plan to plant in St. Landry Parish.

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This morning I met County Agent Barrett Courville at the Acadia Parish Extension office.  Barrett grabbed his rubber boots and we headed out to meet with Mr. Rustin Gilder at the Hoffpauir farm.

County Agent Barrett Courville and Mr. Rustin Gilder discussing the rww demo at the Hoffpauir farm.

The Hoffpauir farm is located in southwest Rayne, LA.  The fields we will studying this season, are on the north side of the field road from the fields we evaluated in 2009.  This makes a unique opportunity to look at the weevil population over time.  This season we will compare CruiserMaxx, Dermacor X-100, pyrethroid to an untreated check.  We pulled up some of the field stakes from last season and I saw a nice little black and yellow snake – boy that will wake you up!

In Crowley, just south of I-10 we met with (left to right) Mr. Charlie Harmon, Barrett Courville, Jude Bellard, and Doug Leonards.

After wrapping up at the Hoffpauir farm, we headed over to meet with Crop Consultant Doug Leonards, and Farmers Charlie Harmon and Jude Ohlenforst.  Doug had identified some colaspis damage in a rice field just north of this series of fields that were planted in soybeans in 2009.  Doug scouted the bean field for colaspis adults and sent us samples throughout the season.  This year, the field will be planted into rice.  We decided to have a ten acre section treated with CruiserMaxx within this approximately 80 acre field.  If the colaspis cause a reduction in stand, we will be able to compare the untreated seedlings to those grown from CruiserMaxx treated seed.  We’ll also be noting date of first emergence, stand count, and plant height.  If there is a reduction in stand in the untreated area, we’ll pull cores before flood to see if we find colaspis larvae on the roots.

The Lawson family (left to right) Larry, Alan, and Colin with County Agent Barrett Courville in Crowley, LA.

Our final stop was to visit with the Lawson family about a test we will be putting out with Michael Fruge (Horizon Ag) and Steven Thevis (G&H).  I was delighted to meet three generations of current (and future) farmers.  Colin told me that he wants to be a farmer when he grows up, but his dad said that he needs to go to college first.  Well, he’s comfortable running around rice fields already.

At the Lawson farm, we will be putting out a test comparing CruiserMaxx to Dermacor and an untreated check.  Alan is fairly certain that he suffered some stand loss from colaspis larvae damaging roots in a nearby rice field.  The field we will work in this year was planted in beans, the stubble was plowed in the fall, then water was held until December when the land was water-leveled.  Water was held until late January, so for a period of about 3 months in total.  It will be interesting to see if colaspis have survived those conditions.

While we were standing in the field Alan walked around and picked up some debri.  It is odd to find that in a prepared rice field that is set-back from the road.  Alan pointed to a row of Oak trees where the leaves were all removed.

The oak trees in the middle of this break that have leaves removed, mark the path of a tornado that destroyed 10 homes, and narrowly passed the Lawson home.

These trees mark the path of a tornado that passed through this rice field on Christmas Eve, 2009.  10 homes were destroyed, and Alan witnessed the tornado picking up and throwing debris at his house.  Debri was strewn across the rice field as well.  Amazingly, no one was injured.  I don’t think the tornado would have effected the colaspis, we can only hope…

The weather was perfect today – this rice field was firm enough to walk on.  If the weather holds, a lot of rice will be planted in the next week.  The first rice was water-planted in Jeff-Davis Parish last Friday.

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