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Scarcely explored means of increasing the soil N pool through biological N2 fixation
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Biological N2 fixation and yield performance of soybean inoculated with Bradyrhizobium
Nutrient Cycling in Agroecosystems, 2021The performance of the soybean (Glycine max) inoculated with Bradyrhizobium is influenced by cropping history. However, re-inoculation with elite strains of Bradyrhizobium generally provides increases in soybean grain yield. The Amazonian savanna has an agricultural frontier area where soybeans have recently been introduced. In this study, we evaluated
Jerri Édson Zilli +5 more
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15N2 as a tracer of biological N2 fixation: A 75-year retrospective [PDF]
Soil Biology and Biochemistry, 2017 Abstract 15 N 2 has played a crucial role in fundamental studies of biological N 2 fixation. However, due to operational constraints, it has more often served as a qualitative rather than a quantitative tracer of biologically-fixed N (BFN). Therefore indirect methods based either on 15 N-enrichment or 15 N-natural abundance have assumed a ...
Deli Chen, Ji-Zheng He, Phillip Chalk
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Optimising biological N2 fixation by legumes in farming systems
Plant and Soil, 2003Whether grown as pulses for grain, as green manure, as pastures or as the tree components of agro-forestry systems, the value of leguminous crops lies in their ability to fix atmospheric N2, so reducing the use of expensive fertiliser-N and enhancing soil fertility.
Gudni Hardarson, Craig Atkins
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Biological N2 fixation by heterotrophic and phototrophic bacteria in association with straw
Plant and Soil, 1995Much of the crop residues, including cereal straw, that are produced worldwide are lost by burning. Plant residues, and in particular straw, contain large amounts of carbon (cellulose and hemicellulose) which can serve as substrates for the production of microbial biomass and for biological N2 fixation by a range of free-living, diazotroph-ic bacteria.
Margaret M. Roper, J. K. Ladha
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Moss-cyanobacteria associations as a novel source of biological N2-fixation in temperate grasslands
Plant and Soil, 2020We investigated N2-fixation by moss-cyanobacterial associations in a North American prairie ecosystem, identifying cyanobacteria associated with moss species, and evaluating spatio-temporal dynamics in N2-fixation rates. We confirmed the presence and abundance of N2-fixing cyanobacteria on three moss species (Pleurozium schreberi (Brid.) Mitt ...
Lalita M. Calabria +3 more
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Measurement of biological N2 fixation in field-grown Robinia pseudoacacia L
Soil Biology and Biochemistry, 1995Abstract Quantitative estimates of biological N 2 fixation (BNF) in Robinia pseudoacacia , one of the few temperate N 2 -fixing trees (NFTs) are lacking. A field experiment was conducted to measure N 2 fixation in R. pseudoacacia over a 2-year period, using the 15 N isotope dilution (ID) method.
S.K.A. Danso, F. Zapata, K.O. Awonaike
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Estimating biological N2 fixation in Canadian agricultural land using legume yields
Agriculture, Ecosystems & Environment, 2010Abstract Annual biological N 2 fixation by legumes and by free-living non-symbiotic organisms was estimated for all Canadian farmland from 1981 to 2006 using the Canadian Agricultural Nitrogen Budget (CANB v3.0) model. Published average N 2 fixation rates were adjusted using variations in crop yield, and the total amount of N 2 fixed was estimated
J.Y. Yang +6 more
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How can increased use of biological N2 fixation in agriculture benefit the environment?
Plant and Soil, 2003Asymbiotic, associative or symbiotic biological N2 fixation (BNF), is a free and renewable resource, which should constitute an integral part of sustainable agro-ecosystems. Yet there has been a rapid increase in use of fertiliser N and a parallel decline in the cultivation of leguminous plants and BNF, especially in the developed world.
Jensen, E. S., Hauggaard-Nielsen, H.
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Soil Biology and Biochemistry, 1995
Abstract The reliable quantification of the contribution of biological N 2 fixation (BNF) is an important priority in studies of the N cycle in low-external input farming systems of the tropics where plant-associated BNF if often the largest N input.
Mary S. Viera-Vargas +5 more
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Abstract The reliable quantification of the contribution of biological N 2 fixation (BNF) is an important priority in studies of the N cycle in low-external input farming systems of the tropics where plant-associated BNF if often the largest N input.
Mary S. Viera-Vargas +5 more
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