So, let’s talk farming. I ran into this article about weed control over at Agweb and it’s actually pretty good so go take a peek at it if you have the time.
Differentiate fact and fiction as you plan your weed control strategy. Source: Myth-Busting Weed and Herbicide Rumors | Agweb.com
Now, the reason this article has popped up (and I’m sure you will see others in the ag press similar to this in the future) is that there are a few new GM crops coming on-line now, modified to work with a couple of new blends of herbicides in an effort to deal with increasing weed resistance to glycophase. The herbicides aren’t really new, though. They are simply blends of previously existing herbicides with glycophase. They incorporate either 2,4-D or dicamba, both of which have been around for decades already. The only thing new about the system is the GM crops that have been engineered to tolerate 2,4-D and/or dicamba.
And they aren’t going to work any better than glycophase alone did. At least not in the long run. Sooner or later weeds will eventually develop resistance to these new blends as well, and we’ll be right back where we are now. In fact, there is already resistance to both of those herbicides “out in the wild” so to speak, because both have been in use for some time.
We have allowed ourselves to become dependent upon a system of weed control that we know is eventually going to fail. So, if we already know that these reformulated mixes are going to eventually fail, why are we bothering with them at at all?
Part of the reason this isn’t going to change any time soon is that over the last few decades we have adopted almost across the board farming techniques that make it difficult, if not impossible, for us to change.
How did we do it in the “good old days”? Well, like this:
Now, if this text editor has managed to put the image in the right place, that is an old Oliver 70 with it’s optional corn cultivator rig. I used to drive one of those when I was a kid. For hours. And hours. And hours. And hours. And hours. And.. Well, you get the idea.
It was boring, tedious, took huge amounts of time, huge amounts of fuel. And with how expensive fuel is these days, how expensive labor is, if you can even find labor, how time consuming it is… Well, it isn’t surprising that the agricultural industry has always been looking for something, anything, to try to eliminate weeds that doesn’t involve so much time, labor and expense.
But some alternative to this never ending cycle of herbicide failures is going to have to be found. We’re running out of options. No matter what kind of chemical intervention we may come up with, sooner or later nature will figure out a loophole to work around it because that’s just how nature works.
I wish I could tell you that there is a solution to this, but there isn’t. People are experimenting, yes. But so far all of the efforts I’ve seen in trying to get out of this dependency on herbicides have involved techniques that simply can’t be scaled up. I’ve seen flame throwers to burn weeds, steamers to steam weeds, “cookers” that scoop up soil and literally cook it to kill weed seeds… All of them are tedious, time consuming, and worst of all, very energy hungry.
There are some new robotics and AI technologies that are looking promising. I suspect that may be one possible solution; machines that do the cultivation for you using cameras, LIDAR, GPS to guide them. Even systems that can identify weeds by sight and mechanically remove them, leaving the desired plants alone.
But those are years away, maybe decades. But who knows? Maybe there is some kind of “magic bullet” out there. Ah, well, no, there isn’t, but we keep looking for one, don’t we?
2 thoughts on “The War On Weeds”
You do not need herbicides or mechanical cultivation to grow commercial scale crops of maize: (A) Plant medium red clover at 14 pounds per acre and let grow for a full year. This will supply all of the nitrogen fertilizer needed to produce a 200 bushel per acre corn crop. It will also eliminate most annual and perennial weeds. Use a roller-crimper or sickle bar mower to knock down the clover. Immediately seed maize with a no-till planter equipped with a fluted coulter. Irrigate immediately to speed maize germination. Wait 2 weeks = 14 days then mow clover as close to ground level as possible. (B) Plant cereal rye at 3 bushels per acre. When rye reaches 6 feet high or when seeds reach soft dough stage, kill rye with a roller-crimper or sickle-bar mower. Immediately plant maize with a no-till seeder. Irrigate immediately to speed maize germination. Both methods (living mulch and mulch-in-place) provide 90% or better weed control without herbicides or mechanical cultivation. This is my weed control program on 90,000 acres since 1956.
ERIC KOPEREK = email@example.com
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Using cover crops for weed control is something we did as well with very good success, as well as for improving soil fertility.
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