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Posts Tagged ‘hoffpauir’

Today we had a nice, but very warm, meeting at the conclusion of the LSU AgCenter Rice Research Station South Farm Tour.  

Farmers, Consultants and Dealers listening in to the presentation at the Hoffpauir Farm in Rayne, La. (photo by Tiffany Pasco)

 

We met at the Hoffpauir farm to discuss the results of the rice water weevil demonstration.  The purpose of this demonstration is to evaluate the use of some currently available insecticides to control rice water weevils in rice fields.  This location has a very nice layout with multiple cuts of the seed treatments (CruiserMaxx and Dermacor X-100) and also two pyrethroid treated cuts.  These treatments were compared to an untreated cut. 

This location was planted in CL111 at a 65 pounds per acre seeding rate.  Rice was drilled in to a water-leveled prepared seedbed.  The field was planted in soybeans in the 2009 season.  Mr. Darryl Hoffpauir farms these fields and his consultant is Mr. Rustin Gilder (Crowley Grain).  County Agent Barrett Courville coordinated the test location.  We would like to thank Barrett, Darryl and Rustin for their efforts in this demonstration test.  

Below is a description of the activities at the field this season.

Activity Date
Planting 3/23/2010
First emergence 4/03/2010
Scouted for first pyrethroid application 5/04/2010
First pyrethroid application (Karate) to dry ground 5/04/2010
Permanent flood 5/04/2010
Scouted for second pyrethroid application 5/13/2010
Second pyrethroid application (Mustang on fertilizer) into flood 5/17/2010
RWW Core samples taken 6/01/2010

Method of data collection: 

Four weeks after permanent flood we gathered core samples by walking through the field from one corner to the opposite corner in an S-shaped pattern and pulling cores at equally spaced intervals across the field.  RWW core data is an average of 10 cores/field.  Below is our overall level of control from the different treatments.  We had a relatively low weevil population at this site, but all products evaluated provided excellent control.

Treatment Average # rww % Control
CruiserMaxx 0.1 96.6
Dermacor X-100 0.1 97.7
Pyrethroid 0.4 90.7
Untreated 4.3  

  

The percent control column indicates relative activity of each insecticide by comparison to the population in the untreated check.

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Yesterday Barrett Courville and I took stand counts at the Hoffpauir Demo location that is just southwest of Rayne, La (Acadia Parish).  Boy, it was another beautiful day here in south Louisiana!  The fields are coming along well.  We took stand counts and plant height measurements in Dermacor X-100, Cruiser-Maxx and one untreated cut.  We will be entering and analyzing the data soon.  In the meantime, here are some pictures of the fields. 

Plants grown from Dermacor X-100 treated seed.

Plants grown from CruiserMaxx treated seed.

Plants grown from seed that had fungicide, but no insecticide seed treatments. The flush was starting to move across this field.

The next step with this field will be to scout for rww adults in the days leading up to permanent flood.  If rww adults and scarring are found in the field, we will apply a pyrethroid to two of the cuts at the eastern end of the series of cuts.

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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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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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