How Bad is Rolled Up Corn?
15 Jun 2211 min 56 sec

It's a hot southeast Arkansas day and Matt's corn is starting to roll up.  But why exactly is it rolling up? Should Matt rush to turn on the irrigation? Is it a natural defense mechanism that means he has healthy corn?  Is it possible to irrigate too soon? Matt and Robbo talking about differing points of view on the subject of rolled corn.  

00:00 Hi guys, Matt miles from extreme AG here McGee Arkansas dxay County southeast, Arkansas. And today Rob. 00:06 Deadman is also with me. He's from Ultimate AG my agronomist that we work together been working together for many years. Y'all see 00:15 us a lot on videos. so the age-old question that we always one of the things we always have intense moments of Fellowship on it's wintergate corn. 00:24 When is the first year irrigation on the corn? Of course, if it's at tassel, you know, we're really close to tassel. That's kind of 00:30 a no-brainer. We pretty much keep it. Relatively wet from tassel on you know anytime during reproductive but like on a soybean or cotton plant. 00:38 Prior to reproduction stage prior to blooms on Cotton prior to blooms on beans. We really hadn't seen a lot of significance in irrigation on you 00:47 know on those cry corn on the other hand, you know, when it before reproductive stage it'll look like this and as you see here, you know, we're standing in 00:56 a spot that we're the leaves are completely completely rolled up, you know in places completely rolled up. Kind of give you an idea. 01:05 What that light leaves looking like and I really actually can't find one here where we're standing that's not rolled up. If 01:11 you look down about 150 yards, which you can't probably see with the camera, you know, the coins in a little bit a little bit better situation. The reason for that is soil type 01:20 the upper end of this field is more of a red red type dirt. The lower end is more of an a barrel long which holds nutrients better and actually holds, you 01:29 know, irrigation better or moisture better. So I'm always want to get out here and water this corn when it starts twisting. 01:37 There's a lot of data out there that shows that you know premature irrigation will actually hurt, you know hurt the plant. So we're 01:43 here today. Rob's got some ideas. I'm not going to tell you that we are agreeing on anything we're saying today and I don't hold myself liable if you see us 01:52 getting an intense moment of Fellowship while we're while we're having this video, we do know that a lot of this from overhead 01:58 heat. The question is is any of it from being drought stress, you know, we hear all the time. We heard this this morning actually, you know, you don't ever want corn to have 02:07 a bad day and what we're trying to find figure out here he is is this corn having a bad day. 02:12 Or is this corn doing exactly what the good Lord wants it to do protecting Itself by rolling up and and still, you know in pretty good shape on a moisture. We've dug 02:21 down here at about eight inches. We can start finding some you know, the way we kind of gauge moisture, you know, if we can put the dirt in our hands 02:30 squeeze it it makes kind of a ball sticks together. We feel like that's fairly adequate moisture, you know at two three four five 02:36 inches, you know, we were grabbing the dirt and it was still crumbling in our hand get down to, you know, eight inches then we started finding some moisture so 02:45 The root systems, you know, we're thinking they're somewhere between the five to eight inch. 02:51 So are we getting enough roots? in that eight inch depth soil for this just to be from overhead heat. So Rob first 02:59 of all, I want to thank you for allowing me to be in your pineapple field today. It's it's a great honor pineapples worth a lot of money pineapples are 03:09 worth a lot of money now guys, let's talk about corn real quick. So we are gonna probably disagree on this and that's 03:15 part of this video is we're gonna disagree and but we're gonna agree to disagree. A lot of corn plants roll up today these corn plants 03:25 in my opinion. They're rolled up. Because of overhead heat they're rolled up because the solar reflection off of the soil surface. 03:33 You know if we took a thermometer right now and we measured this soil surface, it's 90 I'm gonna say the soil surface is probably 03:39 approaching a hundred and ten to 115 degrees. So therefore this plant's hot what happens when it gets hot. Well, 03:45 let's think about what people in Mexico do every day when it's 120 degrees. They take a siesta. So this plant's taking a siesta right now. It's rolling the leaves 03:54 up. It's protecting the surface from losing any additional moisture. So therefore it's kind of stopping transpiration. 04:00 Now what will happen later on this evening as the sun begins to go down a little bit not necessarily when the sun sets but before but as 04:09 the heat begins to break it will unroll and it will go back to transpiring like it's supposed to 04:17 So, you know why? Why did this why all the sudden did this corn start rolling, you know, we we were out here and you've seen the videos and 04:26 you've heard us talk about throughout the spring. We we only got three days here. We only got four days here and we got two days here planning because of all the rain we had and 04:35 then we you saw us and those deer periods of time not long ago. When we did that video with the agrigold soybeans. We were all in hoodies 04:44 and it was cold. But now it's 95 degrees. So we went from wearing hoodies to 04:51 Name this swimming pool. in a week This corn was in a rapid growth stage. So did the the above ground growth? Is it 05:02 outgrowing the below ground growth? Right now we could probably say yes. So therefore by this corn rolling right now. 05:11 What are the moisture sensors say some of the moisture sensors we've got out right now on other fields are saying 05:17 that we are still okay on moisture. You know what's going on here, you know, we know that shallow rooting. 05:26 Causes drought stress or can cause Leaf rolling like this. We know that compaction can cause Leaf rolling like this because again 05:35 cassette shallow rooting. root damage therefore short Roots everything tends to 05:43 all of the things that cause this tend to come back to moisture depletion because of something that has happened to the roots for some reason 05:52 the roots aren't going as deep as they need to. So, you know that that's my opinion on it. Now, we're gonna we're gonna try to dig some more this ground right here 06:01 is a little hard to tell exactly how deep these roots are. We'll try to find some place to see if we can get a better idea of how deep the roots are and then maybe 06:10 we can talk about that too. I got a question for you. Yes, sir. So when this is rolled up like this, yes, sir. Just take this one. For instance. You know, it's pretty much rolled up 06:19 tight. Are we getting any photosynthesis out of this? Is it coming from the bottom of the leaf with this Leaf being rolled up or we 06:26 losing photosynthesis on when they're when they are rolled up. So so I think we're still getting photosynthesis. And the reason 06:32 is is because the leaf has chlorophyll in it, you know, we get reflectivity on the bottom of the leaves off the 06:38 soil surface. Are we getting all the photosynthesis? That's I guess my question and we get I don't know the answer to that. We get a full 06:45 photo senses out of a roll-up Leaf in and if we did have it where it wasn't under heat stress via irrigation, right? Would that with that 06:54 leaf fold it out. Would you would you get more photosynthesis in critical times when it's ready to set it's here, so 07:00 Let me ask this question in return. I'm probably one of the internet no, you will be so when you go to the beach and when we're 07:08 on the boat. I usually see you not take your shirt off because you don't want to get sunburned. I don't take my shirt off because I'm 07:15 fat bro. Well, you take your shirt off because you don't get your white belly sunburn. I can promise you if I look like some of 07:21 these guys. That I see on the lake my shirt would be off before we got on the boat. But but using that as an 07:28 example, you know, when you go to the baby put on sunscreen to keep you don't want skin cancer, that's good. But when you go 07:34 to the beach, so if if this Leaf is laid out Is it going to get sunburned? It's good question, you know, is it gonna hurt it more by being open? And that's right. That's right. 07:44 You know, I really think and and I don't know the answer to this guys exactly but I think that we see this we see this in all over 07:53 the country. Is it always heat related? Like we think it is in the south? 07:58 No, I think in some parts of the country. It's going to be moisture related. Definitely more related. 08:06 You know what's going on? That's the question that we're at. I hope we can get more answers to this. Do you think today that this corn is dropped 08:15 stress? No, okay. So this is where we're going with this Rob don't think this corn is drought stressed. Matt don't really know but from Old School 08:26 irrigation. I would consider this corn drought stress now. We did Dig Down eight inches and if these roots are penetrating below eight inches 08:34 pretty good. It's probably not so now we've moved down the field to where we started irrigating this morning. And this is the 08:40 first set that we've got on the field where I triggered irrigation my moisture sensor up here trigger to irrigation on this field. A lot of the reason is too we've got two irrigation 08:49 pumps here one of those broke down. So we're having to do it one. But if you see on Rob's right, which would be your left. 08:55 This Corn's had water irrigation water running down it since seven this morning. So 8 9 10 11 12 1 2 3 4 8 hours this this front part 09:04 of the fields many here get ready for eight hours. You see that the leaves are 09:09 Are you know I was just kind of give you an idea what the leaves look like right now. All right, that's that's a leaf of 09:17 A of the field we've been here irrigating for seven hours. This is the same leaf. 09:24 On a fit on on the other set that hadn't been irrigated yet. So you can see that big time difference where this is rolling up 09:31 to protect itself. Now the question is are we losing yield here versus here? And that's the hundred dollar question. That's 100 dollar question. So it's probably way more 09:40 100 dollar question is probably a million dollar question million dollar question. Also we come over here we can get some roots that were 09:47 That were out of the yeah, the irrigated we could dig them up better and they look like they're probably eight to nine 09:53 inches. You know what you I can take my hand. You don't lay it down here at the bottom of the plant. It goes a little past my hand and my hands gonna be you know, eight eight 10:02 to nine ten inches long. So we do know based on what we've seen over there at the eight inch depth where we think we have Attica soil moisture that at least would you call 10:11 these straws that be like the solar straws? He said he's a bee like soda straws Rob says, so that's sucking our moisture so 10:17 steel we're about as confused as we were over there, you know, does that difference in the roll-up Leaf today? And decrease yield versus this plant 10:27 versus these plants over here. So I I think that I think that the one thing we add here is is on 10:35 your left here then my right you're right there cameras left. They're left my right that's right. What we have here is we have a happy 10:44 farmer a sunburned corn plant over here. We have a mad farmer and a happy corn plant. So only time will tell we'll see how this test 10:53 comes out. So we're gonna leave 12 rows out and actually not punch the hole in them and see if 10:59 you know what Rob's thinking is right or I'm not even gonna say what I'm thinking right? Because I don't know what to think. I just know that when corn rolls like this we start to irrigation and the last 11:08 couple of years we've gotten more technologically advanced. We have moisture sensors robs. Rob's got 11:14 the Aquarius, you know program on us. I know that I have seen where we water too much. But there's a difference in water and too much 11:23 and watering in the right time. And one thing we we try to do is have everything timely this is V7 corn. So, you know, we're still up. We're still a pretty good way from the 11:32 reproductive stage. Is it too early? I think I think the only way to know is to leave some rows out if we get to rain Sunday. 11:40 May not see a difference in it. So I mean that's kind of the way what we're looking at and we'll follow up on this 11:46 video as we go and kind of see if we can maybe answer this question.

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