Pearl Sutton wrote:Has it not been studied? Or is there data out there so tangled up we can't find it? Might be an interesting project for someone to see if there is uncollated data out there that could be collected into one place where it could be found (and posted to Permies!)
Jason Yoon wrote:Further complicating the issue, and this will be of interest to Dan, is that there exist non-nodulating NFTs. I've gone way past the 1 hour google search by now, and started digging into excerpts of books and scientific papers on the topic. Good news is some of those native NFTs and shrubs on Dan's property might be fixing nitrogen after all despite the lack of nodules. Bad news is it's pretty much impossible to tell without scientific equipment, making a fuzzy situation even fuzzier.
With scientific equipment, apparently they can determine whether the nitrogen in the foliage is coming from the atmosphere or the soil based on N15 levels. There's also a different test they can do to try and see if nitrogenase (the enzyme that enables nitrogen-fixation) activity is present.
Dan Boone wrote:I would no more buy an inoculant product for my land than I would buy magic beans from a shady character I met on my way to the market to buy food for my starving family.
S Bengi wrote:Legume noodle size and color will change depending on the time of the year.
They will big and "RED" during the vegetative stage of the year. (because the plant wants/need more nitrogen).
Once the plant flowers and "stop" growing and now flowers and start putting all of it's energy into fruit growth vs root or vegetative growth. The noodles will "starve" after the plant sugars are now redirected and they will get smaller and less RED/PINK, until that part of the plant growth phase is over.
Here is another post talking about nitrogen fixing trees, that might have a bit of relevant info.