Green Up Presentation

Kristina Alas Author

01/06/2022 Added

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Learn how to rate Buffalo Grass plots using NTEP scoring method.

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[00:00:07.570]We are going to learn about an experiment
[00:00:09.550]conducted by Dr. Keenan Amundsen,
[00:00:11.610]who is an associate professor
[00:00:13.200]at the University of Nebraska-Lincoln.
[00:00:16.020]And so here are the learning objectives for the lessons,
[00:00:18.930]and I'm not gonna go over each objective with you,
[00:00:21.760]but I do suggest taking the time to read them,
[00:00:24.090]so you are prepared and aware of what the lessons
[00:00:26.710]will be focusing on.
[00:00:29.230]So there will be two lessons
[00:00:30.630]that go with Dr. Amundsen's buffalograss greenup project.
[00:00:34.620]For this first lesson, we're going to learn
[00:00:36.910]about the buffalograss greenup project.
[00:00:39.520]We'll view a small section of the plots,
[00:00:41.890]and we'll score those
[00:00:42.940]using the National Turfgrass Evaluation Program,
[00:00:46.260]also called NTEP.
[00:00:48.210]And then we use NTEP scoring data to create a table
[00:00:51.110]and bar graph in Excel.
[00:00:54.290]So here's Dr. Keenan Amundsen.
[00:00:56.600]And as stated before,
[00:00:57.960]he is an associate professor
[00:00:59.510]at the University of Nebraska-Lincoln,
[00:01:02.310]and he specializes in turfgrass genetics.
[00:01:05.070]His primary research objective
[00:01:07.180]is to develop improved cultivars of buffalograss.
[00:01:10.900]And so the buffalo greenup project
[00:01:12.620]was conducted to find a genotype of buffalograss
[00:01:15.650]that greens up earlier in the spring,
[00:01:17.940]and stays green longer into the fall.
[00:01:21.853]Buffalograss being a warm season grass
[00:01:23.940]is a popular turf choice,
[00:01:25.510]because it doesn't go dormant in the summer,
[00:01:27.600]and it's also drought tolerant.
[00:01:29.800]So you can see in the summer,
[00:01:31.440]our buffalograss is green,
[00:01:33.140]while our cool season grasses
[00:01:34.640]like the tall fescue is dormant.
[00:01:37.210]And so in the spring and fall,
[00:01:38.610]our buffalograss is dormant,
[00:01:40.550]while our cool season grasses like tall fescue are green.
[00:01:45.660]So here is the buffalograss research area,
[00:01:48.307]and it consisted of 192 different plots.
[00:01:52.170]And the buffalograss was planted on June 12th, 2012,
[00:01:56.780]but data was not recorded until the spring of 2014.
[00:02:01.360]And this was to simply allow the buffalograss
[00:02:03.590]time to establish.
[00:02:06.330]So there were 192 different plots,
[00:02:09.140]however, only 64 genotypes were used.
[00:02:12.090]And so there was in each repetition one, two and three,
[00:02:15.650]the same 64 genotypes were planted.
[00:02:19.020]And they were planted at random.
[00:02:21.160]So in each rep they were in a different location,
[00:02:24.150]and we will look at some examples of those in lesson two,
[00:02:28.180]and this was to avoid problems with the slope, soil,
[00:02:31.190]and other environmental factors.
[00:02:35.060]So to start, we're going to look at just these 15 genotypes
[00:02:39.890]that are in this red box for repetition one,
[00:02:42.880]so we can start turning this visual data
[00:02:45.830]into numerical data.
[00:02:48.530]So the National Turfgrass Evaluation Program,
[00:02:51.290]which from now on we'll just refer to as NTEP,
[00:02:54.890]is the most widely known turfgrass evaluation program
[00:02:58.690]in the world.
[00:02:59.750]And NTEP provides growers with guidelines
[00:03:02.180]on how to rate turfgrass.
[00:03:04.030]So for the buffalograss project,
[00:03:05.800]we're gonna look at spring green-up,
[00:03:07.520]and that's on a rating of one to nine,
[00:03:09.900]one being straw brown and nine being dark green.
[00:03:12.820]And so in the fall,
[00:03:13.840]we want this seasonal color retention,
[00:03:16.440]which is also on a scale of one to nine,
[00:03:19.550]one being straw brown and nine being dark green.
[00:03:24.940]And so as stated before, here is that small section
[00:03:28.470]for the repetition that I showed you.
[00:03:31.330]So it's just that, I've just enlarged it.
[00:03:34.050]And this is what we're going to use
[00:03:35.890]to apply the NTEP evaluation guidelines on.
[00:03:41.240]And so we just have one photo here from June 22nd.
[00:03:45.300]However, we want to be able to compare
[00:03:47.480]how the genotypes are doing each different time.
[00:03:51.170]So we are actually going to compare two photos.
[00:03:55.680]So we're going to compare June 22nd,
[00:03:59.140]which is the photo you have been seeing,
[00:04:01.430]we're gonna compare that to May 26, 2015.
[00:04:05.340]So let's look at genotype A.
[00:04:08.080]If in May I gave this genotype a three, a score of a three,
[00:04:14.300]however, in June, it greened up quite a bit,
[00:04:17.000]so I ended up giving it a six.
[00:04:19.670]And so with genotype B, it was pretty green in May,
[00:04:23.110]so I gave it a seven.
[00:04:25.120]In B, I thought it looked just about the same,
[00:04:27.870]so I gave it the same score.
[00:04:30.000]C, genotype C, I gave a one in May,
[00:04:33.480]and in June, I thought it greened up quite a bit,
[00:04:37.160]so I ended up giving it a five.
[00:04:42.190]And so you're going to score,
[00:04:43.850]so label each of,
[00:04:46.200]I labeled each of my genotypes at the two different dates,
[00:04:49.220]and then I gave them a score.
[00:04:51.030]And so then the next thing we're gonna have to do
[00:04:53.420]is take these numbers and put it into a graph,
[00:04:56.960]so it's easy for us to see the comparison over time.
[00:05:02.750]So with the scores I gave each genotype,
[00:05:05.160]I created a table in Excel.
[00:05:07.900]And you'll see I have the buffalograss genotypes,
[00:05:10.920]A through O, and I have their green-up scores,
[00:05:14.160]the score I gave them in May and in June of 2015.
[00:05:19.120]And once I created this nice, organized table,
[00:05:22.180]I then created a bar graph in Excel.
[00:05:25.540]So you'll see the spring green-up score,
[00:05:27.680]buffalograss genotype,
[00:05:30.130]and always make sure to have a title for any graph
[00:05:33.850]that you create.
[00:05:35.660]And you'll see that A is, genotype A here,
[00:05:40.070]we'll just look at that.
[00:05:41.450]So the blue bar is the score it was given in May,
[00:05:45.230]and the orange bar is the score
[00:05:47.450]I gave that genotype in June.
[00:05:50.520]So it's easy for me to compare,
[00:05:52.660]to see how it changed from May to June.
[00:05:56.230]And so I can tell if there's a big variation,
[00:05:59.060]or it stayed the same.
[00:06:01.040]And so this graph is a nice, easy way for me to see that.
[00:06:05.490]And it's also important with any table and graph
[00:06:09.400]that you create to have a caption.
[00:06:13.230]And so charts are always considered figures.
[00:06:16.670]In tables, we always say, we always title them as a table.
[00:06:21.450]And so my caption tells that this table and graph are scores
[00:06:27.240]for buffalograss between May and June for one repetition,
[00:06:31.360]but it also tells how I scored the genotypes.
[00:06:36.130]I showed you how I scored my genotypes in May and June
[00:06:40.630]using the NTEP evaluation guidelines.
[00:06:44.020]Then I created a table and bar graph in Excel.
[00:06:47.830]So for your assignment,
[00:06:49.070]you're going to score a small section
[00:06:51.050]for one of the repetitions
[00:06:52.820]using the NTEP evaluation guidelines.
[00:06:56.630]And you're going to use that data
[00:06:58.230]to create a table and bar graph in Excel
[00:07:01.100]to compare the greenness score for May 26th, 2015
[00:07:05.280]and June 22nd, 2015.
[00:07:08.640]And I do have a link here for you
[00:07:11.460]to the NTEP evaluation guidelines,
[00:07:14.350]and a link to a video presentation
[00:07:16.830]on how to make a bar graph in Excel.
[00:07:20.930]So last time I scored this area here for repetition one,
[00:07:26.640]and so you'll be scoring this area for repetition one.
[00:07:31.190]And here are the two photos of that area
[00:07:33.690]in May and June of 2015.
[00:07:36.830]And you will also have access to the PowerPoint,
[00:07:40.000]so you are able to score these.

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