Episode 18: End of Season Research Update

Join Emily as she checks in with Jeff, Nevin, and Bob to see how their seasons wrapped up and what they’re noticing from their observations.

This transcript has been edited for clarity.

0:21 Emily: Hi everyone and welcome to Farm Sci-Ed, the show where we go into the science and education behind farming. I’m Emily Stine and today we’re checking in with Jeff, Nevin, and Bob at the conclusion of their seasons to see how things went and where they’re at. So sit back, relax, and let’s go find out what they’ve been up to.

0:42 So Jeff, how did harvest in the end of your season go?

Jeff: uh It was a rough season. We did finish harvest without too many hiccups, and we see the same challenges um that we’ve generally seen before with a reduction in dry bean yield in the in the wheat bean relay.

Emily: Can you make any preliminary statements about your observations this year?

Jeff: So some of the trends from this year: one of the challenges we’ve seen I should say, this year is what we’ve mentioned before. Because of the hot summer that we had, we had some challenges in using herbicide management for for weeds. This would have been a really good year to be able to cultivate the dry bean crop obviously if in the winter wheat dry bean relay cultivation isn’t an option so without that tool, became a bit more challenging this year particularly again because of the hot summer to manage weeds really well and that clearly had an impact on on dry bean yield particularly in all the crops that had in the treatment plots that had the wheat relay treatment present. General trends that we’ve seen even in years like last year that didn’t have the same herbicide management struggles that we had this year, we saw a reduction in in dry bean yields in the wheat bean relay so we continue to look to the future to find ways to modify that treatment, motivate modify that strategy for to improve being yield. That said, we have seen a trend in improved seed quality in the wheat bean relay and what I mean by that is in in the dry beans in the wheat bean relay treatment we see a reduction of western bean cutworm damage. So that adds clear value to that treatment but again we’re still suffering from this yield drag um in that in the particular arrangement that we have in our wheat bean relay.

Emily: What are your next steps going forward?

Jeff: So right now with the project we’ve got a an ocean of samples that we’re going through we’re making progress on going through this year’s sub-samples of dry beans, scoring both the pods and the beans for western bean cutworm damage again to assess that important bean quality characteristic, as well as taking yields on those plots and sub samples and 100 seed weights to evaluate that. And then we still have quite a few samples although they’re sorted, we have a lot of insect samples from our various sampling techniques from sticky cards to pitfall traps to sweep samples and vacuum samples. They’re all sorted but we’re working on identifying individual species and doing counts again to ultimately come back to say whether or not these different treatments varied in the number of pests or the number of beneficial insects that are present. So we anticipate being through those samples probably around toward the end of February, the beginning of March uh before we have all of those data from from this field season uh fully uh fully sorted through and calculated and analyzed.

4:09 Emily: And Nevin, how is the end of your season progressing?

Nevin: uh Well the season’s still ending, we’ve got most of our crops harvested. So our potatoes, dry beans, soybeans, sugar beets, sunflowers, alfalfa, even corn, corn still to go uh but for for dry edible beans, which we’re talking about today, uh that that was harvested uh about a month ago – no um maybe a little less than that. And so we have to pull those crops off the ground and then we usually dry for a couple days or until the moisture gets ready to thresh and then we we use a combine but rather than actually combine in the field we just kind of have it running on on a cement pad and we throw a bunch of beans in there at a time from each plot and use it more of a stationary thresher. But it, that’s gone well we just have our corn to do and that’s not too big of a rush because it’s a crop that has a little bit of wiggle room for when you can when you harvest it.

Emily: Are you analyzing any data yet?

Nevin: Yeah, we’ve got most of our data analyzed. uh Well I should say the royal “we” has most data analyzed. So uh a number of the projects that we have in dry edible beans beans I still need to go through there kind of with the the fine-tooth comb we call statistics, uh but for the the ones the projects I’ve been talking about most this year has been graduate work from Joshua Miranda and he needs to graduate this semester, so he’s already got everything analyzed. So that’s been good with with several of those studies, so we have the results ready to go and that’s good to go.

Emily: Can you share some of those results with us?

Nevin: They’re not even preliminary, yeah we’re we’re starting to prepare them actually for publication right now. uh so um But they’re they’re looking good yeah uh this
dry edible bean palmer amaranth interference work kind of – as we expected – the more palmer you have, the more the dry edible bean yield goes down. We’ve found that dry edible beans are more susceptible to palmer interference than most other crops, so this sort of palmer interference work is a pretty standard type of research that occurs and it’s it’s happened in a number of different types of crops: corn, soybeans, cotton, sweet potatoes, you know you name it it’s been done already. It hasn’t been done in dry beans and dry beans appear to be more susceptible than other crops are to the palmer interference and so that’s been that’s been nice to have that in there that kind of gives farmers sort of a metric for what they can expect if they if they aren’t able to control palmer amaranth what their yield impacts can be and just to kind of put that in perspective I think we’ve seen four plants in about a thousand square yards, which is kind of a weird way of of describing that, but that that’s enough to cause a noticeable yield impact on your dry edible bean production. So not a lot of palmer to reduce dry bean yield and those plants you know each one at that low of density, each each palmer plant is going to be producing – if they’re a female, so about half of those would be female so you’re looking at about 300,000 seeds per female at that at that level of density.

So that that works been done um the other work that that we have analyzed that Josh was working on is is looking at using Outlook which is currently the only chloroacetamide or group 15 herbicide labeled in dry beans for post-emergent application. He’s been looking at using that in a sequential pre-post program where you apply it pre-emergent with Prowl usually and then before the herbicide wears off, you try to put out a second application to extend that uh period of weed suppression from from the soil soil active herbicide and we’ve been looking at two different timings sort of: a really early application, and then one that’s more in tune when growers will generally put out their post emergence herbicide and one out of three years, the data we needed to have that earlier application but the the other two years uh the timing wasn’t a factor. And what we found is having that Outlook put out as a post and even the only post herbicide or as a lay by in this case we’re getting equivalent we uh palmer amaranth control as if we were to use the herbicide Reflex or fomosaphen which is labeled in our area it’s great on palmer it’s the best palmer herbicide we have in dry beans but because of rotation restrictions, most growers in our area cannot use it so the um use of outlook seem to be equivalent and that’s good news. That’s going to be the best recommendation moving forward for growers is if they’re concerned about palmer is to use Outlook in their their post-emergent herbicide techniques.

um The third study that Joshua finished up is although Outlook is the only group 15 herbicide, the very long chain fatty acid inhibiting herbicides labeled for post-emergent application in dry edible beans, that that may change in the future so Dual Magnum is another one that Syngenta may be expanding the label on to allow applications and another one that BASF is looking into is uh Zidua or peroxisulfone and so in addition to looking at Outlook we also screened both of those herbicides to see if they provided as good control of Outlook or even better or worse, and then we threw in Warrant as well which is probably not going to be labeled in dry edible beans but we wanted to see uh if it could be and what we found is Zidua, Dual Magnum, all provided equivalent control of palmer amaranth as a in a sequential pre-post system as Outlook and that was as good as using a Reflex post-emergence. the the Warrant or acetylchloride was a bit worse but that probably wouldn’t be the best fit for the system anyways. And for both the Outlook and Dual Magnum, you could use those um uh pre-emergent and post emergent uh if the future label allows that in Dual where you could have uh use the same herbicide for both applications while the peroxisophone residual, that’s likely going to be a post only option. It’s not going to have a pre-emergent label because we did see some injury when applied pre, but you could easily just throw that in after Outlook or Dual.

11:03 Emily: Bob, how has your season progressed?

Bob: Overall I guess it it we haven’t got the results back from the sugar beets

you know the tonnage in in pounds per sugar and all pounds of sugar per acre that sort of thing yet.

But overall it was very hot and very dry and so we had trouble kind of keeping them keeping them wet. I think the yields are still going to be very good, we haven’t seen that yet but at the same time, there just was not any or very much cercospora. We did see it some in the plots, but based on our different methods of like the alert system, the spornado thing, we just didn’t see any need to make any applications. We went ahead and did just so we could say we did something about it but we never in our plots never did see the values that are required for making applications. Emily: Did you hear much about cercospora being an issue this season?

Bob: I did not, no. I mean I didn’t – nobody contacted us about it, and I didn’t hear through the grapevine. I’m sure it was there in some you know localized spots but it just it it just was not as problematic this year as it often is and I think that is just due to the to the heat. A lot of it is is due to uh requirements for it is at night, say from midnight to seven and I could, you know tell you that it was still up in the 80s in in our house uh you know at midnight and so that is part of the reason why it just wasn’t as problematic problem – is that you know we weren’t able to evaluate the different treatments that we were trying to use and then so there’s that’s kind of a wash this year in terms of that.

Emily: So do you plan on repeating this study again next year?

Bob: I will plan on it, but it also will depend on Western Sugar and their desire to do it. But I am going to propose to try to do something at least something similar to this again using the alert system and using that spornado sport catching device. I want it to go well for the growers but we still need to try to do a little bit better job maybe of producing disease in our plots so we can evaluate the treatments properly.

13:17 Emily: Well folks, there you have it. With all three research projects wrapped up for the year, the researchers are on to their data crunching. We got to see some of the preliminary thoughts that they’re having but for the most part it’s wait and see until after all the data comes in. Be sure to like this video and subscribe to our channel for more episodes. Find us on twitter @TheFarmSciEd and visit our website at farmsci-ed.com for transcripts and more information. Have a good one!