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Posts Tagged ‘CruiserMAXX’

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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This article is reprinted from the LSU AgCenter Rice Research Station newsletter.

Authors: Natalie Hummel and Michael Stout

Rice farmers in Louisiana who use seed treatments to manage insect pests in their fields have a choice of seed treatments in 2011: Dermacor™ X-100 (DuPont Crop Protection) and  CruiserMaxx® (Syngenta).  In addition, Valent has requested an experimental use permit (EUP) for NipsitInside seed treatment, an insecticidal seed treatment alternative similar to thiamethoxam.  If approved, NipsitInside will be used on a limited number of acres in Louisiana in 2011 and will potentially be available on a wider scale in 2012.  Although these three insecticidal seed treatments are similar in many respects, they also differ in key ways.  Understanding the similarities and differences between the two seed treatments is crucial to making the right insecticide choice for each rice field.

The key pest targeted by CruiserMaxx, Dermacor X-100, and NipsitInside is the rice water weevil, the most important early season insect pest of rice in Louisiana.  Dermacor X-100 has been evaluated against the rice water weevil in multiple small-plot tests over many years at the LSU AgCenter Rice Research Station in Crowley, and in addition has been used commercially in Louisiana the past three growing seasons.  Dermacor X-100 provides excellent control of rice water weevil larvae; in commercial fields, weevil populations were typically reduced by 90-95% compared to fields not treated for weevils.  CruiserMaxx has also been evaluated in multiple small-plot trials over the past several years at the Rice Research Station, and it too provides good control of rice water weevil larvae, although, in side-by-side comparisons of Dermacor X-100 and CruiserMaxx conducted in small plot trials at the Rice Research Station, control of weevil larvae given by CruiserMaxx is generally not as good as control given by Dermacor X-100.  In rice water weevil demonstration tests in commercial fields in 2010, we found that Dermacor X-100 provided the best level of weevil control, followed by pyrethroid (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 significant difference in weevil control between the pyrethroid and the CruiserMaxx seed treatment.  Unfortunately, the results from hybrid test plots (25 pound seeding rate) in 2010 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.  Small plot replicated research that may also clarify the question of effectiveness of CruiserMaxx at low seeding rates will also be conducted.  

Probably the most important difference between the three seed treatments is their activity against secondary pests.  Because these chemicals belong to different chemical classes (the active ingredient in Dermacor X-100 is a type of anthranilic diamide, whereas CruiserMaxx and NipsitInside are neonicotinoids), they are effective against different pests.  CruiserMaxx and NipsitInside will probably provide better control of colaspis larvae (present in a few fields in southwest Louisiana in 2009 and 2010) than will Dermacor X-100, and will also provide good early-season control of sucking insects such as aphids, thrips and chinch bugs.  Dermacor X-100, on the other hand, should provide excellent control of early-season Lepidopteran pests such as fall armwyorms.  Recent evidence from both Louisiana and Texas indicate that Dermacor X-100 provides protection against stem-boring insects.  Evidence from Texas also indicates that Dermacor X-100 may help control South American Rice Miner in rice.  The spectrum of pests controlled by each of these seed treatments is probably the most important consideration in choosing between the three.  As a related consideration, CruiserMaxx is marketed as part of a seed treatment “package” (CruiserMaxx® Rice) that includes fungicides that may help control seedling diseases and rice blast.

There are also similarities and differences in the agronomic practices that are used with each of these seed treatments.  Importantly, the use of both seed treatments is restricted to dry-seeded (drill-seeded or dry broadcast) rice; neither product can be used in water-seeded rice.  Also, the per-seed application rate of CruiserMaxx will not change with rice seeding rate, unlike Dermacor X-100, for which application rate is adjusted for seeding rate.  This may make CruiserMaxx easier to use, but it should be noted that the use of CruiserMaxx at very low seeding rates (for example, seeding rates typically used for hybrid rice varieties) has not always provided acceptable control in tests conducted by LSU AgCenter.  Details on the use patterns for NipsitInside are not known yet.

The expected availability of three seed treatments for insect control in rice, along with other available products for insect control (Karate, Mustang Max, and the other pyrethroids), gives Louisiana farmers a wide range of options for managing their insect pests in drill-seeded rice.  Unfortunately, there are not as many choices in water-seeded rice, and expanding the range of options for insect management in water-seeded rice is a continuing focus of research for the Entomology program.  

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UPDATE: I didn’t get any guesses about the mowing injury, well here’s the answer – it was caused by (drumroll please) Cows!  They had escaped from some nearby pasture and enjoyed munching on the edge of the rice field. 

Today we learned a good lesson about verifying the cause of crop damage.  Fred Cramer (G&H in Gueydan) had called me about whiteheads in rice.  Tiffany and I drove out to Gueydan early to beat the heat.  We met with Toby McCown and Fred at the G&H store.  We suspected that the whitehead damage was being caused by borers.  When we struck out across the Dermacor X-100 treated field we found a few whiteheads.  As we began to inspect the damaged plants, the symptoms just didn’t look like borer injury.   

Whiteheads in rice - at first we thought these would be caused by borers, but we found that was not the cause.

 

Feeding injury most likely caused by the rice field rat.

 

Rat chewing injury near a node - this resulted in whiteheads.

 

Whitehead that was most likely caused by rat feeding injury.

 

The edges of the damaged area were clean, there was no feeding lesion in the sheath or frass (insect waste), and we did not find any insects except for a few chinch bugs.  It seemed like something had chewed on the rice.  My instinct was to attribute the damage to either an animal or a chewing insect (maybe grasshoppers).  I could not confirm what had caused this damage while I was in the field.  After we wrapped up for the day, I stopped by the rice station in Crowley and showed the pictures to Johnny Saichuk – he told me the damage was probably caused by the rice field rat.  He had seen this damage about 5 years ago in Acadia Parish.  Apparently it is a fairly common problem in some parts of Texas.   

Whiteheads and some cropped rice - any guesses about what mowed the rice?

 

We continued up the road to a nearby untreated field.  Along the way, Fred pointed out a cluster of whiteheads on the edge of a field.  In addition to the whiteheads, quite a bit of the rice had been clipped.  Any idea what caused this damage?  First clue is that it was not an insect, but something else that likes grass.   

The untreated field (no insecticide seed treatment) we scouted next had just started to head.  We were able to locate a few whiteheads, and upon closer inspection found some borers injuring the rice plants.  The rice is heading unevenly, and so this makes pest management more difficult – especially the timing of sprays for rice stinkbugs and borers.   

In one plant that had a whitehead we found a feeding lesion on the leaf sheath, and under that a tiny sugarcane borer larvae.  When I cut into the stem I was surprised to find about 10 more larvae.  It’s rare to find this many borers in a single stem.  It was also discouraging because they were tiny larvae that had already bored into the stem.  An insecticide application will not control the borers once they enter the stem.  About 15% of the rice was fully headed and the rest was around split boot.  We found more borers in a few other plants, and so decided that a pyrethroid spray would be wise to attempt to prevent more whitehead injury from the borer infestation.  The farmer plans to apply 2.0 oz of Karate per acre.  Hopefully this will prevent further borer injury and control the early stink bug infestation.   

First or second instar sugarcane borer that we located behind a damaged sheath. When I cut open the stem there was a surprise...

 

I found about 10 sugarcane borer larvae had already bored inside the stem. Pyrethroid sprays will not control borers that have entered the stem.

 

In this picture you can see just how tiny these borer larvae were - they were just about 1/4 inch long and had already bored into the stem.

 

So where did the borers come from?  A neighboring field of tall weedy grass had been plowed under recently, and it is possible that the borers had moved out of that neighboring field into the rice.  

Rice Stalk borer on the tip of my finger - this larva was also small in size and had bored into the stalk. You can identify rice stalk borers by the dark head in combination with a pair of continuous stripes running the length of the body.

 

We found some classic examples of frass bring pushed out of the stalk.  

Frass forced out of the stem due to sugarcane borer feeding inside the stalk.

 

 When  I pulled back the leaf sheath, the exit hole was apparent.  

Sugarcane borer emergence hole and frass.

 

 We also found some rice stinkbugs on the heading rice that was starting to bloom.   

Rice stink bug on flowering rice - these seed suckers attack rice as soon as they can.

 

This field is also maturing unevenly, and late-season insect management will be a challenge.  Remember that in most cases once you see the injury caused by borers (whiteheads) it is too late to treat.  In this case the crop is maturing unevenly, so a treatment may still do some good.  It is best to scout for borers when you are scouting for sheath blight injury.  In Texas, the first pyrethroid application for borers is recommended from 1 to 2 inch panicle, followed by a second application at boot.   

The final field we scouted had been treated by CruiserMaxx.  This seed treatment will not control borers, and we did find a few whiteheads in this field as well.  In this case we had a combination of sugarcane borers and rice stalk borers infesting the rice.  The field had already been drained in preparation for harvest, and so a borer treatment is not advised.  The infestation of borers was very light.  

Mike Stout and I are co-advising a graduate student who is focusing her studies on borers.  We hope to know more about borer management, thresholds, insecticide control options, and variety susceptibility in the next couple of years.

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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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