Results 1 to 10 of about 225,493 (345)

Hopanoid lipids may facilitate aerobic nitrogen fixation in the ocean. [PDF]

open access: yes, 2019
Cyanobacterial diazotrophs are considered to be the most important source of fixed N2 in the open ocean. Biological N2 fixation is catalyzed by the extremely O2-sensitive nitrogenase enzyme.
Cornejo-Castillo, Francisco M   +1 more
core   +1 more source

Estimating annual soil carbon loss in agricultural peatland soils using a nitrogen budget approach. [PDF]

open access: yes, 2015
Around the world, peatland degradation and soil subsidence is occurring where these soils have been converted to agriculture. Since initial drainage in the mid-1800s, continuous farming of such soils in the California Sacramento-San Joaquin Delta (the ...
Horwath, William R   +3 more
core   +2 more sources

Dual mutualistic associations in sainfoin (Onobrychis viciifolia Scop.) : a thesis presented in partial fulfilment of the requirements for the degree of Master of Agricultural Science in Agronomy at Massey University [PDF]

open access: yes, 1982
Recent studies established that many legumes, when infected with the appropriate Rhizobium spp. and arbuscular fungi, nodulated better and exhibited greater dinitrogen fixation than plants infected with only the rhizobia.
Kon, Kee Fui
core  

Evidence of limited N2 fixation in the Southern Ocean

open access: yesCommunications Earth & Environment
Biological nitrogen fixation is an important source of new nitrogen, influencing ocean fertility and carbon uptake. While recently documented in Arctic waters, its role in the Southern Ocean remains uncertain.
Shuai Gu   +7 more
doaj   +1 more source

Biological nitrogen fixation in Crotalaria species estimated using the 15N isotope dilution method [PDF]

open access: diamond, 2002
Ibrahima N’Doye   +5 more
openalex   +1 more source

Methodological aspects of determination of biological N-fixation of different forage legumes [Methodische Aspekte der Bestimmung der biologischen N-Fixierung verschiedener Futterleguminosen] [PDF]

open access: yes, 2002
Knowledge about the amount of fixed nitrogen of different legume crops is very important for calculation of farm N balances. According to literature the choice of determination method may have an impact on the estimated amount of N fixed by a legume ...
Loges, Ralf, Taube, Friedhelm
core  

Biological nitrogen fixation in soybean under water restriction and exposed to 1-methylcyclopropene [PDF]

open access: diamond, 2016
Vitor Camargo do Nascimento   +2 more
openalex   +1 more source

How Do Different Nitrogen Application Levels and Irrigation Practices Impact Biological Nitrogen Fixation and its Distribution in Paddy System? [PDF]

open access: gold, 2021
Yanhui Zhang   +18 more
openalex   +1 more source

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