Hi everyone
It is well-know that most of soil N2O emissions come from N-fertilization. Leguminose perennial crops such as Medicago sativa can reduce N2O emissions, but how?
I understand that such crops do not require any N-fertilizaion (Thus, we have an indirect reduction of emission) and consuidering a life-span of 3-5 years with no soil tillage we reduce the soil areation.
Moreover leguminose are N-Fixing crops since they perfom a symbiotic fixation of atmospheric N2.
But, the things that is still not clear to are:
1) Such N2 wich is fixed by Medicago sativa is it also an intermediate of denitrifcation/nitrification and other soil process? Or is it just the one which is present in the atmosphere?
2) If the answear to the prvious one is positive, can I say that Medicago sativa reduces N2O emission by the fixation of N2 (the intermediate of denitrification/nitrification etc.)?
3) Apart from the atmospheric N2 fixed by Medicago sativa, does this plant catchs some other N from the soil via roots?
Thank you
Please check the following RG link and PDF attachment.
Article Lucerne (Medicago sativa) alters N2O-reducing communities as...
Thank you very much Arvind Singh. Very interesting and useful papers!
Hi, here we estimated the impact of alfalfa in cropping systems on different impacts including N2O (see case study in Brandenburg) in the paper Article Trade-Offs between Economic and Environmental Impacts of Int...
Dear Matteo Francioni ,
We are measuring soil greenhouse gases emissions (N2O, CH4 and CO2) in an alfalfa crop established under three different types of long-term tillage (intensive, minimum and no-till) and under three different levels of residual soil N, under Mediterranean climate in NE Spain. The measurements are part of a national project willing to find innovative cropping systems to reduce GHG emissions to the atmoshphere ( https://www.researchgate.net/project/Crop-diversification-for-agrosystems-sustainability-in-Mediterranean-conditions-DISOSMED).
We project to publish our findings after 3 years of measurements.
Cheers,
Daniel
Daniel Plaza-Bonilla that's very interesting as we are measuring CO2, CH4 and N2O from a 6-years old Alfalfa field compared to other two fileds originated from the same field:
One cultivated with wheat
One cultivated with wheat + Biochar
Please let's keep in touch so we can share experiences and point of view
Matteo Francioni , that is good to know. I was not aware of other colleagues measuring GHG in alfalfa under Mediterranean conditions.
We keep in touch.
Daniel Plaza-Bonilla With about a year of delay our first paper on N2O from the termination of an alfalfa-field it out. We are going to publish some more on Alfalfa dealing with CO2-N2O-CH4, biochar and enzyme activities
https://agronomy.it/index.php/agro/article/view/1613
Please let me know if you published new papers on this topic! Thanks!
Buongiorno Matteo Francioni !
Cool! As soon as I have some spare time (if that exists...) I will have a look at it. I am currently almost full invested in legume-related topics, GHG and non-GHG aspects included. In my twitter account I try to keep some track of the experimental activities we carry out, feel free to have a look.
Grazie mille,
Daniel
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