Maximizing Carbon Sequestration in Terrestrial Agroecosystems

sealover wrote:
This paper...

sealover wrote:
This paper came out on line about two months ago.

It cites the author of this thread. The authors include folks who I know well and respect profoundly.


Mike Deas, et al. 2024. Geologically-derived nitrogen and phosphorus as source of riverine nutrients. Earth Critical Zone Volume 1 Issue 1 (June, 2024)



This actually relates to the work that Rush Limbaugh praised in September, 1998.

"Geologically-derived nitrogen.." Is a "pool" of N that was considered to be negligible before 1998.





All the most relevant posts of this thread are compiled, beginning slightly more than 1/3 way down page 22.

A series of topics begins with "Carbon Sequestration and Allelopathy in Rainforest Fern Thickets", about 1/3 down page 22.

A series of peer-reviewed scientific papers related to this thread begins a little more than 3/4 way down page 22, and continues until a little more than 1/2 down page 23.

Every paper listed either cites the author of this thread, or was published by the author himself.

sealover wrote:
This paper came out on line about two months ago.

sealover wrote:
This paper came out last year.
...

Into the Night wrote:

sealover wrote:
This paper came out last year.
...

Science is not a paper.
Nitrogen isn't organic.

Stop spamming.

Im a BM wrote:

Into the Night wrote:

sealover wrote:
This paper came out last year.
...

Science is not a paper.
Nitrogen isn't organic.

Stop spamming.

This post is the very definition of "spam".

Im a BM wrote:

"Science is not a paper." - ITN

This is a rebuttal to a non-existent claim.

I guess that anyone who previously believed that "science IS a paper." now has it on irrefutable authority that they were incorrect.

"Nitrogen isn't organic." - ITN

Unless it happens to be ORGANIC NITROGEN, which is a term that appears in the title of many of the papers referenced in this thread.

Im a BM wrote:
Again, we have it on irrefutable authority that "Nitrogen isn't organic."

True, if we are talking about nitrogen gas, nitrate nitrogen, ammonium nitrogen, or one of the other forms of INORGANIC nitrogen.

But ORGANIC NITROGEN, including proteins, amino acids, etc., IS exactly that - Organic nitrogen.

Im a BM wrote:
That's what they call it and that's what it is.

Im a BM wrote:
One troll doesn't get to unilaterally assign new definitions to long accepted terms.

Im a BM wrote:
Science is not a troll.

Into the Night wrote:
Stop spamming.

sealover wrote:
These peer-reviewed...

keepit wrote:
and you're not the definer of words.

Into the Night wrote:

keepit wrote:
and you're not the definer of words.

Yes I am. I define my own words from time to time, just like other people do.

sealover wrote:
Nutrient cycling dynamics of natural ecosystems can be mimicked in cropping systems to maximize carbon sequestration into soil organic matter, and minimize emissions of nitrous oxide. Tannin (aka polyphenol) chemical ecology provides insights into biogeochemical mechanisms that regulate carbon and nitrogen cycling.

The convergent evolution of tannin-rich plant communities has occurred on highly-infertile soils throughout the world. To acquire and conserve nitrogen, these plants allocate much of their organic carbon below ground to support symbiotic mycorrhizal fungi associated with their roots. Tannins in plant litter form recalcitrant complexes with protein, immobilizing this organic form of nitrogen and preventing mineralization. Mycorrhizal fungi produce enzymes that mobilize nitrogen from protein-tannin complexes, which is transferred directly to the root in organic nitrogen form. This short circuiting of the mineralization step in the nitrogen cycle prevents emission of nitrous oxide to the atmosphere, and prevents export of nitrate to groundwater or surface water. Allocation of photosynthate below ground to support mycorrhizal fungi also enhances sequestration of carbon into soil organic matter.

Tannins inhibit the oxidation of ammonium in soil to nitrate by nitrifying bacteria. This minimizes nitrous oxide emission as a by product of microbial nitrate reduction. Nitrogen release from tannin-rich litter is predominantly in the form of dissolved organic nitrogen rather than ammonium or nitrate. Dissolved organic nitrogen adsorbs to soil organic matter, minimizing leaching loss of nitrogen and retaining it in slow release form.

Tannins inhibit the decomposition of organic matter to substantially increase its mean residence in or above the soil. In the most extreme cases, equatorial rainforests form massive litter layers over acid white sand soils that are virtually devoid of nutrients or roots. One- or two-meters thick layers of litter in various stages of decomposition can accumulate above the mineral soil surface. This is despite warm, wet, well drained conditions that favor rapid decomposition. Exceptionally high tannin content in the vegetation of these forests enables them to create an enduring layer of organic matter above the soil surface, where virtually all the root growth and nutrient cycling occurs with high efficiency, and negligible losses.

Tannins themselves are the dominant substrate that transforms into soil humic acids. Humic acids enhance soil fertility in many ways, and their mean residence time in soil can be many centuries long. Tannins can comprise more than half the dry weight in foliage of tannin-rich species, and much of this represents sequestered carbon that will remain for a long time as stable soil organic matter.

We may not want to create thick litter layers above the topsoil in all our croplands. But polyphenol biogeochemistry can still be applied to increase carbon sequestration and decrease nitrous oxide emission. For example, tannin-rich organic matter can be combined with more rapidly decomposable crop residues or manure to slow decomposition and immobilize nitrogen into slowly mineralized organic form, as compost. Crop-mycorrhizal associations could be facilitated to sequester carbon and access recalcitrant soil nitrogen.

keepit wrote:
itn,
It isn't spam if it's good science and the listeners are interested.
Keep on keeping on, im a bm.

Into the Night wrote:

keepit wrote:
and you're not the definer of words.

Yes I am. I define my own words from time to time, just like other people do.