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Posts Tagged ‘NipsitInside’

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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This morning I received another call about chinch bugs infesting seedling rice – this is the fourth call I’ve had this season, so I want to remind field scouts to be on the look-out for this pest. So far they have been reported in Jeff-Davis, Evangeline and St. Landry Parishes. Chinch bugs can quickly move in and reduce a stand of rice. Click here to read more about chinch bugs and the damage they can cause to a rice field. Rapid identification and a prompt response are key to minimize the impact of a chinch bug infestation.

In one case, there was a minsconception that Dermacor X-100 would control chinch bugs. While these new chemistries provide excellent control of rice water weevil larvae, they are often limited in their ability to control other insects. Keep in mind that each of the seed treatments controls a specific group of pests. 

Below is a list of the available seed treatments registered for use in Louisiana rice production and which pests they can control (or at least suppress):

CruiserMaxx & NipsitInside should control infestations by the following:

  • Rice water weevil larvae
  • Rice water weevil adults – suppression
  • Chinch bugs
  • Colaspis larvae
  • Thrips
  • Aphids

CruiserMaxx and NipsitInside will not control infestations by the following:

  • Fall armyworms
  • Stem borers
  • Seed midge
  • Rice leafminer
  • South American rice miner
  • Stink bugs attacking late-season 
  • Spider mites

Dermacor X-100 should control infestations by the following:

  • Rice water weevil larvae
  • Rice water weevil adult – minimal suppression
  • Colaspis larvae – suppression
  • Fall armyworms
  • Stem borers
  • Rice leafminer
  • South American Rice Miner
  • Seed midge (although this should not be a problem in drill-seeded rice)

Dermacor X-100 will not control infestations by the following:

  • Chinch bugs
  • Thrips
  • Aphids
  • Late-season stink bugs
  • Spider mites

To learn more about identification of the different insects that attack rice, please visit the LSU AgCenter Rice Insect Identification guide by clicking here.

You can read more about the seed treatment options by viewing the presentation I gave at the Louisiana Agricultural Consultants Association Meeting in Feb 2011.  It is can be downloaded by clicking here.

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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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Last week we planted the rice water weevil demonstration test sites in Evangeline and St. Landry Parish. Both locations are the hybrid variety XL745. At each location we will be comparing the seed treatments CruiserMaxx, Dermacor X-100 and NipsitInside to an untreated check.

Drilling the strip trial at Fontenot farm in St. Landry Parish.Rice was planted using a 42 foot wide drill pulled by a John Deere.GPS monitoring of planting plots.

The GPS monitoring system was used to line up each of the strips – each treatment was replicated twice across the field.

Drill rows in the field.

Charlie will be growing 1200 acres of rice this year.  This is the last bit of rice he is planting for this season.  Soil conditions were ideal for drilling.  A nearby field has been planted in a Horizon Ag strip trial to evaluate varieties.

LSU AgCenter County Agent Vince Deshotel vacuuming treated seed out of the drill between treatments.

Vince Deshotel vacuumed out the drill between treatments.  We also gathered seed samples and will send them off for analysis to confirm the rate of insecticide applied to the seed.

Dean Reed, Charlie Fontenot and Vince Deshotel after successfully planting our test plots.

We greatly appreciate the help of Dean Reed, Charlie Fontenot and Vince Deshotel in planting this demonstration test site.  Without excellent on-farm cooperators our programs would lack the depth on “real-world” situations. We will let you know when the rice emerges.

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On March 16, 2011, we planted our first site for the 2011 LSU AgCenter rice water weevil demonstration test.

Acadia Parish County Agent Barrett Courville following the drill as we planted the test plots.

The purpose of our rice water weevil demonstration test is to compare currently recommended seed treatment insecticides on commercial farms in Louisiana. This year we are comparing three insecticide seed treatments (CruiserMaxx, Dermacor X-100 and NipsitINSIDE) to an untreated check. 

Rustin Gilder walking near the flagging on the edge of the plots. Flagging is color-coordinated with the treatments to make it easier to monitor progress during the season.

Here are the details about the Acadia Parish test site:

Parish Acadia
Cooperator Glen Simon & Wes Simon
County Agent Barrett Courville
Consultant Rustin Gilder
Distributor Crowley Grain
Variety XL745
Seeding rate 22
Drill width 36
Length of field 700
Acres per treatment 10.00
Total acres 40
Total lb seed 220
CruiserMaxx – A 15.4 fl oz total
Dermacor X-100 – B 17.5 fl oz total
Nipsit-Inside – C 4.22 fl oz total
Untreated – D no insecticide

We will take stand counts and plant height data 2 weeks after seedling emergence.  To assess insecticide efficacy, we will collect rww soil cores 4 weeks after application of permanent flood.

Field map with color-coding for the treatments. Feel free to drive by and watch the field as the crop matures during the season.

We intend to have a tour stop at the demo test site at the conclusion of the LSU AgCenter South Farm Tour this summer.  Please monitor the blog for an announcement about the date and details.

Acadia Parish Demo test cooperators Wes Simon, Rustin Gilder, Terry Istre and Barrett Courville.

We greatly appreciate the tremendous effort in time and land-use by our cooperators. We will keep you posted on the progress at this site.  For additional information, please contact Barrett Courville.

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This week we’ve continued to travel the state and meet with cooperators for the LSU AgCenter rice water weevil (rww) demonstration test. In case you are a new reader to the blog, you can read more about rww at http://bit.ly/haGduU. You can also see a video on how to scout for rice water weevil adults and larvae at this website: http://bit.ly/gUJe8R

RWW are 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.

The purpose of our rice water weevil demonstration test is to compare currently recommended insecticides on commercial farms in Louisiana. This year we are restricting our test to comparison of three insecticide seed treatments (CruiserMaxx, Dermacor X-100 and NipsitINSIDE) which will be compared to an untreated check. These products were described in my last blog posting, so I won’t spend a lot of time describing them here.

Yesterday we met with Farmer Charlie Fontenot, Crop Consultant Dean Reed, and County Agent Vince Deshotel in St. Landry Parish. Charlie cooperated with us last year, and his farm had the most severe rice water weevil pressure of all locations. It will be interesting to see what we find this year. Charlie intends to plant XL745 at a seeding rate of 25 lbs per acre. We will plant two passes (reps) of each seed treatment, which will be compared to an untreated check. There is a good chance that we will plan a field meeting at this site sometime later this summer. We anticipate planting in mid-March.

After we completed our discussion about demo test plans, Bruce Schultz joined us to interview Charlie Fontenot for a feature story in Louisiana Farm and Ranch. Charlie was honored as St. Landry Parish Farmer of the Year for 2010. An accomplishment that he certainly deserves. Charlie has ramped up his production over the last few years and runs a beautiful operation in St. Landry. Look for the story in next month’s issue of Louisiana Farm and Ranch.

Today we met with Farmer Wes Simon (and his son Ethan), Crop Consultant Rustin Gilder, and County Agent Barrett Courville in Acadia Parish. 

County Agent Barrett Courville, Farmer Wes Simon and I discussing plans at the field in Acadia Parish.

This is our first year working with Wes and his father Glen.  Wes intends to plant either XL729 or XL745 at a seeding rate of 22 lbs per acre. 

Wes Simon measuring out the plot size with his tractor.

The planting arrangement will be the same as at Charlie’s farm – two passes for each seed treatment which will be compared to an untreated check. Depending on the weather this weekend, Wes will probably plant sometime next week. There is a good chance we will have a tour stop here in conjunction with the LSU AgCenter south farm tour this summer.

After we left Wes, we headed over to Calcasieu Parish to meet with Farmer Mark Stelly, Landowner Johnny Hensgens, Crop Consultant Randy Verret and County Agents Jimmy Meaux and Dusty Zaunbrecher. 

County Agents Jimmy Meaux, Dusty Zaunbrecher, Farmer Mark Stelly, and Johnny Hensgens discussing plans for the demo test site.

Plans for the demo field site in this parish will be very similar to our set-up in Acadia Parish. Mark intends to plant XL745 at a seeding rate of 25 pounds per acre.  Again, depending on the weather, this site will be planted sometime before early April.

Now we are headed to Breaux Bridge for their annual winter rice production meeting at 6 pm tonight at the St. Martin Parish LSU AgCenter office. I’ll discuss seed treatments for rice water weevil management.

All photos taken by Anna Meszaros.

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It’s almost that time of year again.  Today Anna and I met with County Agent Keith Fontenot and Evangeline Parish farmer Kenneth LaHaye to discuss plans for the 2011 rice water weevil demonstration test.  Kent Guillory is the consultant who will assist with monitoring this test location.

Mr. Kenneth LaHaye, County Agent Keith Fontenot, and me discussing plans for the demo test in Evangeline Parish.

This will be the third year that we have worked with Kenneth (and his dog Harley) on a demo test site. We appreciate his continuing support of our on-farm demonstration program. The last two years we worked with Kenneth near Chicot Lake.  This year, our test site is located near Vidrine on La-10. We will provide directions to the field after planting.

Kenneth's dog Harley - she makes for great company in farm work.

In the 2011 rww demonstration test we will restrict our insecticides to the three different seed treatments that are now available on the market.  These will be compared to an untreated check.  The table below compares these products:

Kenneth will be planting RiceTec variety XL745 at a 25 pound per acre seeding rate.  The seed treatments will be arranged in two blocks, with one rep in each block.  Each rep will include two 20 ft drill passes.  We intend to plant sometime between March 12 and 15, if the weather cooperates.  Kenneth has already prepared the land for planting.   A herbicide burndown of 32 oz/acre generic roundup and 2 oz/acre Valor was applied in November, 2010.  When looking at the field we noticed some areas where his burndown did not provide control.

The weedy strips in the field are the result of tapping the boom and turning off an outside nozzle.

Kenneth asked us to post this picture to illustrate how effective a burndown put out in November can be. The missed passes in the field are the perfect example of what he could have been fighting as he prepared to plant, had he decided to wait until spring to apply his burndown.  Last season Kenneth grew soybeans in this field.  Rice will be drilled into the stale seedbed at around 25 pounds per acre.  This soybean-rice rotation can sometimes be conducive to injury from the colaspis beetle.  We’ll be sure to monitor for injury from this pest when we take stand counts two weeks after emergence.

(All photos taken by Anna Meszaros).

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