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March 24, 2025 16 mins

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Together, the UCCE Farm Advisors seek to provide relevant, topical research-backed information relating to CA rice production. Sarah Marsh Janish sits down with Kate Walker, a representative from FMC, to discuss some of the latest developments in the rice chemical market.

Mention of an agrichemical does not constitute a recommendation, merely the sharing of research findings. Always follow the label. The label is the law. Find out more at ipm.ucanr.edu.

The views, thoughts, and opinions expressed are the speaker's own and do not represent the views, thoughts, and opinions of the University of California. The material and information presented here is for general purposes only. The "University of California" name and all forms and abbreviations are the property of its owner and its use does not imply endorsement of or opposition to any specific organization, product, or service.

 

UCCE Upcoming Events

  • Hedgerows and Soil Assessments Field Day 
    • Date: April 1st, 12:30 PM
    • Location: Corner of Tule Rd & Lodi Rd, Colusa, CA 95932  (39.01286825023778, -121.93150847565158)
    • Questions: UCCE Sutter-Yuba office at (530) 822-7515
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    • Check-in: 8:30am 
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    • Location: Colusa Sacramento River State Recreation Area, 1 10th Street, Colusa, CA 95932
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Other Resources

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Episode Transcript

Available transcripts are automatically generated. Complete accuracy is not guaranteed.
SPEAKER_01 (00:00):
Hello and welcome to Thoughts on Rice, a podcast
hosted by the University ofCalifornia Cooperative Extension
Rice Advisors.
I'm one of your hosts, SarahMarchionish, and I'm a rice farm

(00:21):
advisor for Colusa and Yolocounties.

SPEAKER_00 (00:24):
I'm Whitney from the forest.
I'm the Cooperative ExtensionRice Advisor for Sutter, Yuba,
Placer, and Sacramento counties.

SPEAKER_02 (00:32):
My name is Luis Espino.
I'm the Rice Farming SystemsAdvisor for Butte and Glynn
counties.
I'm Michelle Leinfelder-Miles.
I'm a farm advisor in the Deltaregion.
I work on all sorts of fieldcrops, grains and forages, but
one of those is rice.
And the counties that I coverare San Joaquin, Sacramento,

(00:53):
Yolo Solano, and Contra Costacounties.

SPEAKER_01 (00:57):
Together, the UCCE Rice Farm Advisors seek to
provide relevant, topical,research-backed information
relating to California riceproduction.
Today we're continuing on frompart one of the rice chemical
update, talking with some otherrepresentatives from the rice

(01:18):
chemical industry.
As a reminder, mention of anagrochemical does not constitute
a recommendation, merely thesharing of research findings.
Always follow the label.
The label is the law.
Find out more at ipm.ucanr.edu.

(01:53):
Today, I have here Kate Walkerfrom FMC.
And we're really fortunate tohave Kate come and talk to us
today because as I understandit, she's got quite a bit of
experience in this industry.
So Kate, thank you so much forbeing here today.

SPEAKER_03 (02:07):
Oh, Sarah, thank you so much for having me.
It's such a pleasure to talkwith you.
Yeah, my name is Kate Walker.
I'm a tech service manager withFMC.
I've lived and worked inCalifornia for this is my 15th
year.
So I've been out here since2010, covering coastal
California and NorthernCalifornia.

(02:28):
So again, just really excited totalk with you today.

SPEAKER_01 (02:32):
Fantastic.
We love having people on herewho have been kind of rooted,
excuse the pun, in the industryfor a while now.
So really fortunate to have youhere.
Thank you.
Well, let's talk about theproducts that FMC offers in the
rice market.
And this, I mean, theestablished products that are
pretty much household names inthe industry.

(02:53):
Let's talk about those.

SPEAKER_03 (02:55):
Sure, sure.
So as far as establishedproducts, FMC offers a herbicide
Shark H2O.
So this product has been on themarket for a number of years.
It's a very user-friendlyproduct.
We have it registered formanagement of broadleaf weeds in
water-seeded rice.

(03:16):
So we've got two applicationtimings that we recommend for
Shark H2O.
For an early application, thisis when the rice is about two to
three leaf or larger.
We recommend a seven and a halfounce per acre rate by air.
And this is going to haveactivity on sedges like umbrella

(03:36):
and bulrush.
And it's also going to pick upsome other broadleaf weeds like
arrowhead and duck salad.
Later in the season, so when therice is larger, this is usually
after the water has been letout, we have a application up to
four ounces by ground.

(03:58):
This application is going tohave really good tank mix
flexibility with other riceherbicides that are on the
market.
Again, Shark H2O is a broadleaf,so if you need to incorporate
grass herbicides, Shark is agreat product that will pick up
your broadleafs if you're makingan application for things like

(04:18):
watergrass.
Overall, we see Shark as being avery good resistance material.
management tool.
Per the label, we've got a maxof 12 ounces per acre per crop
per season with a 60-day PHI.
So that's just a quick overviewof how to use Shark H2O in rice.

SPEAKER_01 (04:39):
Great.
And as I understand it, Shark ispretty unique in that it's a PPO
inhibitor.
And we've only got two chemicalsthat use that mode of action in
the rice portfolio.

SPEAKER_03 (04:51):
Correct.
So it's, again, that makes it avery good resistance management
tool to use with some of theother burndown products that
maybe have a broader or moreselective, you know, mode of
action or weed spectrum.
And being able to incorporate aPPO just ensures that, you know,

(05:12):
the things like Butte andCliffhanger, those do not
develop resistance, which weknow is a problem with a lot of
our weeds and rice.

SPEAKER_01 (05:19):
Absolutely.
Yeah.
Thank you for that informationon shark.
Of course.

SPEAKER_03 (05:23):
Of course.
Shark H2O is the onlyestablished product we have.
But Resistance Management is agreat segue to talk about a new
product that we have coming tothe market, Canale GR.
So we have just submitted toboth California and to the EPA a

(05:44):
product called Canale GR.
That is the brand name.
The active ingredient name isDodelex.
It is a new mode of action.
in HVAC group 28.
So there are currently no group28s that are registered for use.
It is a DHO-DH inhibitorherbicide.

(06:06):
Now, here's the part where itgets a little bit tricky.
The DHO-DH stands fordehydroorotate dehydrogenase
inhibition.
So that is the mode of action.
It is a pre-emergent herbicidethat is selective on grass
weeds.
And it has been showingfantastic efficacy for all of

(06:31):
our water grass species andsprangletop.
So this is one we are reallyexcited to get to the market
because we know that ricegrowers are struggling with
these resistant grasses in theirfields.

SPEAKER_01 (06:44):
Absolutely.
And I'm so glad you brought thisup because I think we've been
hearing about this product for anumber of years.
And selfishly, I'll say I'mreally glad that it's known as
Kinali.
I personally was having a hardtime pronouncing I'm going to
say it wrong, Dodalex.

SPEAKER_03 (07:04):
Dodalex.
You were so very close.
Yeah, and Dodalex is a whole loteasier than saying the mode of
action and the technical AIname.
So I'm with you.
I'm very happy that we've got abrand name so we can refer to it
as Kinali GR.

SPEAKER_01 (07:23):
And it's I mean, the D-H-O-D-A, I mean, that's a
whole new world.
We've never seen this before.

SPEAKER_03 (07:31):
Correct.
Correct.
I think the last new mode ofaction that we had, and I do not
have the slide in front of me,but I believe that the last new
mode of action that wasintroduced into the rice market
was somewhere around the 80s.
So it's been a while since we'vehad a new mode of action.

(07:53):
herbicide into the market.
So yes, we are very excitedabout that.

SPEAKER_01 (07:59):
And so as far as any preliminary results or tentative
use rates, I know it's notcurrently available, but can you
tell me anything about how it'sbeen working in the research
trials?

SPEAKER_03 (08:10):
Yeah.
So because we have the labelsubmitted to the EPA and it
hasn't been approved, we can'tshare specific use rates yet.
But what I can say about the useand the targets So we will have
a rate range on the label, whichis really nice because that
gives our rice growersflexibility to use what rate

(08:34):
fits their field and theirpressure.
It's a pre-emergent herbicide.
So that's going to be the keythat it needs to be applied
prior to the weed germination.
So we're going to be looking atearly applications around
seeding up to about one leaf.
It's going to be somewhere inthat timing range to just ensure

(08:56):
that those grasses like theearly water grass, like
sprangletop, mimic water grass,basically that the herbicide is
there to have activity on thosegerminating seedlings so that
those weeds can't getestablished.
So using it early as apre-emergent herbicide is where

(09:17):
it's going to be positioned.

SPEAKER_01 (09:19):
And is the idea to try and use Kinali GR as a base
herbicide for a herbicidetreatment program?

SPEAKER_03 (09:27):
Exactly, Sarah.
You just nailed it.
It's going to be the foundationfor a season-long grass
management program inwater-seasoned rice.
So this will give our growersthe opportunity to start out
clean, and then they'll be ableto manage any escapes very
easily throughout the season.
We've been testing this in bothsmall and some very limited

(09:50):
large-scale, because everythingis crop-destruct.
but we've been doing a ton ofreplicated plot work and even
some one acre type fly-ons.
And we've seen just outstandingcontrol of water grass.
So it just gives these growersthe ability to keep that water
grass out of the field.

(10:10):
Once the rice gets established,they're just not seeing the
overwhelming pressure thatthey've been seeing, that we're
seeing in the untreated plots,for example.

SPEAKER_01 (10:20):
And here's a question I know you guys are
getting all the time, but do wehave any idea about when it
might be available for ourCalifornia rice growers?

SPEAKER_03 (10:30):
Yeah, so we are...
Per the EPA, some feedback we'vereceived from them, FMC
anticipates that Canale GR willbe commercially available for
the 28th season.
So that's what we're, we arereally hoping for.
And that's, that's, again, thefeedback that we've been

(10:52):
receiving from the EPA.
We, FMC is committed to gettingthis tool to our growers as
quickly as possible.
So we've been engaged with theRice Commission, as well as DPR.
So our Our plan is commercialavailability for 2028.
That being said, you know,there's a few years between now

(11:12):
and then.
So hopefully things stay ontrack.
And of course, we'll keep, youknow, our university
cooperators, our customers inthe market up to date as we
progress.

SPEAKER_01 (11:22):
Absolutely.
And that's, again, I mean,that's not something that
there's a lot of control over onyour side.
So we'll be waiting.
We'll be waiting, I guess.
No one's more excited thanFantastic.
Well, Kate, thanks for thatinformation.
Anything else you'd like to addon the product side?
No, I

SPEAKER_03 (11:41):
think that's pretty much everything I can cover.
It's just a baseline of the factthat it's a new mode of action.
It's going to be veryuser-friendly and definitely a
market need with the resistantgrass issues we have.

SPEAKER_01 (11:57):
Well, with that, I think we're going to wrap up.
Is there any upcoming events orcontact information you'd like
to share with our listeners?
Yeah,

SPEAKER_03 (12:05):
so we are continuing to work with University of
California.
So hopefully we'll have someinformation that we can share at
rice field days this summer.
As we get closer toregistration, I have no doubt
that FMC will be hosting moremeetings and more events to
educate growers and educate ourcustomers and get the market

(12:25):
ready.
Great, Kate.
Thank you so much.
All right.
Of course.
Thank you, Sarah.

SPEAKER_01 (12:48):
Now let's move on to some upcoming events.
The Hedgerows and Rice Field Daywill take place on Tuesday,
April 1st at 1230 p.m.
The location for that will bethe corner of Tooley Road and
Lodi Road, just southwest ofGrimes, and we'll be able to
offer 2.5 CCA credits for soiland water management.

(13:12):
Again, that's Tuesday, April 1stat 1230 p.m., the Hedgerows and
Rice Field Day.
Our next Next upcoming eventwill be the UCCE Colusa
Centennial Sprint to celebrate100 years in office.
That will be Saturday, April 5that 110th Street in Colusa at the
Colusa Sacramento River StateRecreation Area.

(13:35):
Check-in will start at 8.30amand the run will start at 9am.
There is a$30 registration feeper person, which will include
the shirt and fee, and you'll beable to find the registration on
the UCCE Colusa website.
Again, that's the UCCE ColusaCentennial Sprint, Saturday,

(13:56):
April 5th.
We'd also like to announce asave the date for the rice
production workshop, and thatdate will be July 23rd and the
24th.
That's a two-day workshop to goover the specifics of rice
production, and we have thismeeting every two years.
Again, that's a save the date,July 23rd and the 24th.

(14:18):
For more information about theseand upcoming events, feel free
to check out our resources,which include the UC Rice blog
and the UC Agronomy Ricewebsite.
In terms of other resources youmight like to take advantage of,
you can also look at ournewsletters, which include Rice
Briefs, which covers Colussiolo,Rice Notes, which covers Yuba

(14:42):
Sutter, Rice Leaf, which coversButan Glen, and Field Notes,
which covers rice in the DeltaReef.
region.
Thanks for listening to Thoughtson Rice, a University of
California Cooperative Extensionpodcast from the University of

(15:03):
California Agriculture andNatural Resources.
You can find out more about thispodcast on our website,
thoughtsonrice.buzzsprout.com.
We'd love to hear from you,whether it's from using our text
link in the show notes, a surveysubmission in our feedback form,
also in the show notes, or in acomment or rating on your

(15:24):
podcast streaming servicechoice.
We're also experimenting withpolls on Spotify, so if you're
listening on Spotify, you mighthave an option to answer some of
those questions, and we might beable to talk about that on the
air.
You can also email us with anycomments, questions, or concerns
at thoughtsonrice atucdavis.edu.

(15:49):
Spring has sprung for us here inthe And remember, like the
growers like to say, have a ricelife.
Mention of an agrochemical doesnot constitute a recommendation,
merely the sharing of researchfindings.
Always follow the label.

(16:10):
The label is the law.
Find out more at ipm.ucanr.edu.
The views, thoughts, andopinions expressed are the
speaker's own and do notrepresent the views, thoughts,
and opinions of the Universityof California.
Thank you.
Thank you.

(16:32):
Thank you.
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