Nitrate reduction

That is fine for 10% of the drainage.

The rest of us would need to be in permanabpnt bypass mode..... if you really need drainage, you need the tile to flow. If you have 6 feet of extra fall. If your ditch doesn't get higher than your fields to begin with (reverse saturation). If......

Folk in the metro areas can read about it and say well there, how simple.

But it's the typical, 10% solution. The rest of us need so,etching else.

Paul
 
Something that works along the same principle of saving N is winter cover crops of tillage radish, put down right at harvest time. They will draw 100 to 150 lbs per acre of N into the root tuber before air temps of 20 F arrive then it is stored there over fall and winter and becomes available to the next row crop planted. Around $ 13 per acre seed cost.
 
Whether we agree or not, the public's demand for clean chemical free drinking water will continue to grow. The first person or company that finds an effective way to deliver nitrogen to growing crops without the unused nitrogen leaching into the water supply could make a lot of money. What are the most promising ideas? Would timing applications to match crop demand and limiting applications on flood prone acres reduce the problem? As technology advances more methods might become practical.
 
Land gets runoff from thousands of acres of others land.

The runoff in our area works it's way down to a lake 30 miles away.

You would have to start with the farmer at the highest elevation and work your way down getting everybody onboard to install one for it to have a meaningful benefit.

I think the idea would run into resistance.

Some would say for example,
I am not going to install one as all our land is pasture and hay, and I do not apply commercial fertilizer.
Or
Why would I want to invest my land, time and money into somebody else's problem.
Or
There are swamps on my property that already do what your wood box does and they are maintenance free.

I lean towards what ss55 has said, basically figure out how to fix the problem where it originates instead of spending a fortune trying to mitigate the damage after the fact.
 

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