Farming Video | Can You Grow 220-Bushel Corn With Only 40 Pounds of Nitrogen?

8 May 26

After years of cutting nitrogen rates, this corn trial pushes things to the edge—testing whether 40 pounds of nitrogen can still grow a 220+ bushel crop.

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3 Years - Grower Standard Practice

00:00 This is one of the most interesting trials to me because it really is an extreme reduction of nitrogen. 00:00:08 Way back in early '22 when I met Jared Cook and we looked at the soil samples of my farm, the three sets of samples, 0 to 00:00:16 6, 6 to 12, 12 to 24-inch deep soil samples. So going down two foot of soil samples and looking at the amount of nitrogen that our soil was mineralizing, Jared Cook made the 00:00:28 statement, "I don't even know why you use synthetic nitrogen. Your soil's producing more than you're ever going to use." Like, holy cow, what a 00:00:35 statement that was. And here we are a little over four years later, still working with Jared, still learning from him, things like that, and we've 00:00:43 reduced our nitrogen a long ways. But I still think that there's more to go. And we did a trial a couple of years ago where we went all the way down to 60 00:00:52 pounds of anhydrous, all the way up to 240 pounds of anhydrous, and there was a five-bushel yield difference. It was negligible. 00:00:59 We did try zero pounds at that time, and it was a 70-bushel difference. So we learned that we need something, but when 60 and 240 are the same yield, I 00:01:11 believe we can go lower than the 60. So this year we're going to stream bar on 15 gallon of 28-0-0-5, so that's 45 pounds of 00:01:21 nitrogen, and then we're going to go through the season and we're going to take soil tests to see what's available in the soil. 00:01:27 We're going to take sap tests to see how the plant is doing, and provided that the plant doesn't need anything else, we might not put 00:01:34 any on. However, because of the extreme reduction in nitrogen, we want to make sure that we have a bit of a safety net, 00:01:43 and we want to make sure that we don't have a big yield penalty. Align N is our safety net from Tidal Grow. 00:01:50 We can apply this up to five quarts. The cost of this, depending on the rate, is $12 to $25 an acre, which is not high-priced at all 00:02:01 relative to what nitrogen is, and we really want to see how low can we go. When I was talking to Galen about doing this trial, he said, "Well, let's face it, when it comes to nitrogen, hindsight 00:02:13 really is 20/20." Because a lot of years, I really believe that the 40 pounds might be enough. That might be hard for some people to hear in agriculture, but I really 00:02:23 believe that in our soil, in our environment, 40 pounds might be enough. But we don't know what the weather's going to be like all summer. 00:02:29 Is it going to be cool and cloudy? Is it going to be warm and sunny? So that really affects the biological system of the soil. 00:02:35 And so as Galen said, when it comes to nitrogen management, hindsight really is 20/20. We can apply this product as late as 00:02:43 VT in corn, and so that isn't totally the end of the season, but that is a long way down the season that, as Galen said, gives us a real hindsight to know what we need to do to manage the 00:02:54 nitrogen in our corn. So again, the path I've been on, the journey I've been on for four years, we're kind of getting to the culmination of 00:03:02 that, and I'm really excited to see if we can grow corn with only 40 pounds of nitrogen. The APH of this field will be about 220, 225, and 00:03:12 we're going to see what happens. I expect that some of it we'll probably leave if the sap test says it's okay, and I expect that some of 00:03:20 it we're going to put the Align N on to see if there's a yield gain. So again, I think this is something to watch throughout the season. 60 00:03:27.800 --> 00:03:30.400