Results 261 to 270 of about 124,422 (325)
Some of the next articles are maybe not open access.
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.
E. S. Jensen, H. Hauggaard-Nielsen
semanticscholar +2 more sources
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.
M. Roper, M. Roper, J. Ladha, J. Ladha
semanticscholar +2 more sources
Science of The Total Environment, 2018
A study was undertaken to test the effects of molybdenum (Mo) and phosphorus (P) amendments on biological nitrogen (N) fixation (BNF) by boreal forest moss-associated cyanobacteria. Feather moss (Pleurozium schreberi) samples were collected on five sites,
Dalton L Scott +6 more
semanticscholar +4 more sources
A study was undertaken to test the effects of molybdenum (Mo) and phosphorus (P) amendments on biological nitrogen (N) fixation (BNF) by boreal forest moss-associated cyanobacteria. Feather moss (Pleurozium schreberi) samples were collected on five sites,
Dalton L Scott +6 more
semanticscholar +4 more sources
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. Danso, F. Zapata, K. O. Awonaike
semanticscholar +2 more sources
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. Yang +6 more
semanticscholar +2 more sources
Plant and Soil, 1995
Alley cropping is being widely tested in the tropics for its potential to sustain adequate food production with low agricultural inputs, while conserving the resource base. Fast growth and N yield of most trees used as hedgerows in alley cropping is due greatly to their ability to fix N2 symbiotically with Rhizobium.
N. Sanginga, B. Vanlauwe, S. Danso
semanticscholar +2 more sources
Alley cropping is being widely tested in the tropics for its potential to sustain adequate food production with low agricultural inputs, while conserving the resource base. Fast growth and N yield of most trees used as hedgerows in alley cropping is due greatly to their ability to fix N2 symbiotically with Rhizobium.
N. Sanginga, B. Vanlauwe, S. Danso
semanticscholar +2 more sources
Can we understand and predict the regulation of biological N2 fixation in grassland ecosystems?
Nutrient Cycling in Agroecosystems, 2010We discuss results from controlled environment studies including mesocosms, grazing experiments and long term field experiments which show how biological N-2 fixation in legume based systems is tightly coupled to the N demand at scales ranging from the individual plant to the grassland ecosystem. We further test the consequences of this hypothesis of a
J. Soussana, T. Tallec
semanticscholar +3 more sources
Influence of urea on biological N2 fixation and N transfer from Azolla intercropped with rice
Plant and Soil, 2003The N2 fixed by Azolla before and after urea application during the rice cycle, the mineralisation of Azolla-N as well as its availability to rice was studied in two greenhouse experiments conducted in 1996 and 1997 and in June 1998 in Goettingen (Germany).
M. Cissé, P. Vlek
semanticscholar +2 more sources
Plant and Soil, 2004
Three woody legumes were planted as two-year 'improved fallows' to evaluate their residual nitrogen (N) effects on two subsequent maize crops under minimum and conventional tillage management. Maize monoculture and cowpea-maize-maize sequence treatments were included as controls.
R. Chikowo +4 more
semanticscholar +3 more sources
Three woody legumes were planted as two-year 'improved fallows' to evaluate their residual nitrogen (N) effects on two subsequent maize crops under minimum and conventional tillage management. Maize monoculture and cowpea-maize-maize sequence treatments were included as controls.
R. Chikowo +4 more
semanticscholar +3 more sources
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
semanticscholar +2 more sources
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
semanticscholar +2 more sources