Posted by paul on May 03, 2023 at 03:56:53 from (66.60.209.84):
In Reply to: Re: Sewage sludge posted by M-MAN on May 03, 2023 at 03:36:48:
Hayfield. There is very little actual grass hay fields locally. Grass hay comes from waste land, odd little corners and mostly ground too wet to farm but it dries out in mid summer to make hay from. And road ditches.
Hayfield here is alfalfa. Wouldnt need the N from sludge on alfalfa, so it wouldnt be a best use of the nutrients.
I realize some areas to the East they make a lot of grass silage for cows, different climate so grass hay actually pays out better than alfalfa. But seems odd to me!
Anyhow hay might be a worse choice. Hay gets fed to cows, cows concentrate their huge volume of feed into a few gallons of milk per day, which for butter or cheese might get reduced down to a few lbs of food from a huge volume of hay. For any contaminate that does flow along through all the processing, it becomes very concentrated in our food system. Have to be very careful of cow feed.
But, if we dont recycle sludge - the human stuff of it - into food, we cant possibly have a sustainable food system. One just has to think that through logically. The drain pipes from businesses might need to be capped or rerouted, but toilets flushed and garbage disposal stuff -need- to be returned to the land as fertilizer, there is no other sustainable way.
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