Soil organic matter

[tweety]

There is 1000 lbs of nitrogen per acre in 1% of Organic matter. 10,000 lbs of Carbon. What you see on top is organic material - not organic matter. An acre of soil 6 inches deep weighs approximately 2,000,000 pounds, which means that 1 percent SOM weighs about 20,000 pounds per acre. Under average conditions it takes at least 10 pounds of organic material to decompose into 1 pound of organic matter, so it takes at least 200,000 pounds (100 tons) of organic material applied or returned to the soil to add 1 percent.

So basically if you fertilized your wheat crop with 100 lbs of N per year for 10 years and never harvested or removed anything during those 10 years, you would increase your OM by 1% once the organic matter actually broke down to OM from 10 to 50 years.

[GDR]

Spoken like a true animal farmer. Straw is worthless so let me do you a favor and bale it.

Dumb comment in general but also not what he has said or suggested.

To turn that back at you I've seen lots of guys burn straw rather than give it away because they had too much to deal with. That is pretty dumb also. If you learn to work with your neighbors instead of against them life might just be more pleasant.

[makar]

A true animal farmer also returns nutrients to the soil. It’s called manure.

Organic value aside there is about 20 dollars of nutrients in a straw bale, and no, I am not going to give it away.

[Sheepwheat]

Organic value aside there is about 20 dollars of nutrients in a straw bale, and no, I am not going to give it away.

I never asked for or told anyone to give away their straw. I am simply pointing out that relative to other dry matter straw removal is less than most guys think. And the fact soil om doesn’t suffer for 30 to 50 years of removal, it simply isn’t as big a deal as many seem to think. Everyone knows there is nutrient value in straw. Not everyone knows the result of 50 year old straw removal impacts, or lack of, on soil om.

[Tucker]

It wasn't my intention to single you out Sheepwheat. If you feel that way I'm sorry. I am upset that everyone seems to see straw as waste. Any biofuel proposal has line items for baling and transportation of straw but seem to think that farmers are getting a favor by having their 'waste' straw removed for them. I'm also upset with cattle farmers who have 5 or 8 bales burst their netwrap and just leave them in your field. I'm upset with cattle farmers who don't haul the bales off because they are busy when you are trying to get in and do a post harvest pass with the sprayer before freeze up. I'm upset with cattle farmers who miss a half dozen swaths on the far side of a tree line that you find the next spring plugging your air seeder. I am upset with cattle farmers who when they do grudgingly pay $5 per bale give you a rubber check. So yes, if I have a straw 'problem' I will 100% every time burn it now.

[jamesb]

I never asked for or told anyone to give away their straw. I am simply pointing out that relative to other dry matter straw removal is less than most guys think. And the fact soil om doesn’t suffer for 30 to 50 years of removal, it simply isn’t as big a deal as many seem to think. Everyone knows there is nutrient value in straw. Not everyone knows the result of 50 year old straw removal impacts, or lack of, on soil om.

I agree that some straw remove is not bad if not done continuously but what irritates some is the guys who expect to get for free. We have a lot of guys ask to bale straw. Out of those, one in three at most will offer to pay. Worst for me was the guy who had us drop a quarter, showed up in the heat of the day when it was clearly to dry to bale and then abandoned the field with quarter made bales and the rest of the windrows to harrow ourselves. Kinda leaves a bad taste in the mouth and wrecks it for the next guy to stop in. If their was a full on demand for continuous baling of straw, I would have to make sure that removal compensation will be greater than the value of what would return to the soil if chopped and spread. If there is a profit in this then I'm all in.

[AlbertaFarmer5]

In 2018 due to the drought and shortage of feed and straw I made an exception, and all of our cereal straw was baled. Either sold in the swath, on shares, or hired it baled, or I baled some. At least in theory. Had 70 acres that never got baled at all, one quarter that had half bales, and piles of straw, and left over swaths all over it. Bales still in the fields when trying to seed. And compaction from hauling bales in during the wet spring(as in, roads that didn't even grow). I also had to fence around bales still in the field in the fall to run our own cows on the stubble.

I do sometimes trade straw for manure, which in theory is a good idea, don't have to deal with seeding through the residue, and when it comes back it is already enriched, and partially broken down, and can be transferred from the best land to the poorest.

[SASKFARMER]

We have taken land that was mined and added pig shot every three years and our organic matter is coming back strong.

Strong Organic matter is very good for soil.

[Sheepwheat]

I see how if you’ve had bad experiences with ppl how it can leave a sour taste in your mouth re straw. I can’t believe ppl want it free or for 5 bucks a bale or whatever. I get y’all’s point more knowing that.

I guess if your as upstanding a citizen as I am, cheating ppl and expecting free rides from ppl is a foreign concept. Lol...

[burnt]

Began experimenting with cover crops here a few times lately, in addition to broadcasting red clover on wheat in the spring.

Rye will take off like crazy in soybean stubble if harvest is early enough, had 8" top growth the first time. So roots structure would be more than that and that's were the beneficial biological action is happening.

Last year we did oats/barley/peas after barley harvest. It got to be over 2' tall by late October when we decided to cut and bale it for cow feed.

Debated about leaving it for building organic matter or taking it for feed.

Agronomist said to cut and bale it as most of the soil amendment comes from below the surface. So we did.

Cut one day and baled 2 days later, still so green the tractor would (and still will) barely lift a 4.5' bale. Cows think it's candy and have to blend it with coarse first cut.

Should add that with global cooling, harvest is getting later and more challenging. So it's tougher to establish a good cover crop post-harvest.