Assessment of Nitrogen Fixation in Terrestrial Environments in Field Conditions

Nature ◽  
1970 ◽  
Vol 227 (5256) ◽  
pp. 378-379 ◽  
Author(s):  
W. S. SILVER ◽  
TIMOTHY MAGUE
Keyword(s):  
Nitrogen Fixation ◽  
Field Conditions ◽  
Terrestrial Environments

scholarly journals Growth and nitrogen fixation in Azolla pinnata under field conditions

1982 ◽  
Vol 10 (2) ◽  
pp. 205 ◽  
Author(s):  
S. A. Kulasooriya ◽  
W. K. Hirimburegama ◽  
S. W. Abeysekara
Keyword(s):  
Nitrogen Fixation ◽  
Field Conditions ◽  
Azolla Pinnata

Nitrogen fixation by Nostoc colonies in terrestrial environments of Aldabra Atoll, Indian Ocean

Phycologia ◽  
1979 ◽  
Vol 18 (3) ◽  
pp. 278-287 ◽  
Author(s):  
Brian A. Whitton ◽  
Alan Donaldson ◽  
Malcolm Potts
Keyword(s):  
Nitrogen Fixation ◽  
Indian Ocean ◽  
Terrestrial Environments

Nitrogen fixation (15N dilution) with soybeans under Thai field conditions

1988 ◽  
Vol 108 (1) ◽  
pp. 87-92 ◽  
Author(s):  
R. M. N. Kucey ◽  
P. Chaiwanakupt ◽  
T. Arayangkool ◽  
P. Snitwongse ◽  
C. Siripaibool ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Field Conditions ◽  
15N Dilution

RHIZOBIAL INOCULATION AND P FERTILIZATION RESPONSE IN COMMON BEAN (PHASEOLUS VULGARIS) UNDER GLASSHOUSE AND FIELD CONDITIONS

2007 ◽  
Vol 43 (1) ◽  
pp. 67-77 ◽  
Author(s):  
M. ZAMAN-ALLAH ◽  
B. SIFI ◽  
B. L'TAIEF ◽  
M. H. EL AOUNI ◽  
J. J. DREVON
Keyword(s):  
Nitrogen Fixation ◽  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Symbiotic Nitrogen Fixation ◽  
Field Conditions ◽  
Nutrient Deficiencies ◽  
P Fertilization ◽  
Rhizobium Tropici ◽  
Symbiotic Efficiency ◽  
Rhizobial Inoculation

Osmotic constraints, nutrient deficiencies, especially phosphorus, and the lack of efficient strains of rhizobia in Mediterranean soils are major factors limiting symbiotic nitrogen fixation and yield in common bean (Phaseolus vulgaris). In order to improve yields, we investigated responses to rhizobial inoculation and P fertilization under glasshouse and field conditions with two bean cultivars, Coco blanc and BAT477. The nodulation test, using a hydroponic system in a glasshouse, revealed strong variability among 22 rhizobium strains of various origins, in their symbiotic efficiency, compared with Rhizobium tropici CIAT899. The introduced strains proved to be more efficient although some local rhizobia revealed high potential efficiencies. Glasshouse trials showed a significant effect of inoculation and P supply on nodulation, N content and shoot dry weight that varied with rhizobial strain. Field trials substantiated the glasshouse observations and emphasized the effects of cultivar-rhizobia interactions on symbiotic parameters and yields. It is concluded that inoculation with suitable rhizobia with supply of additional P is a technology that may improve symbiotic nitrogen fixation and yield in common bean in some soils under a Mediterranean climate.

scholarly journals Agronomic Performance and Nitrogen Fixation of Heirloom and Conventional Dry Bean Varieties Under Low-Nitrogen Field Conditions

2019 ◽  
Vol 10 ◽  
Author(s):  
Jennifer Wilker ◽  
Alireza Navabi ◽  
Istvan Rajcan ◽  
Frédéric Marsolais ◽  
Brett Hill ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Field Conditions ◽  
Agronomic Performance ◽  
Dry Bean ◽  
Low Nitrogen

Comparisons of nitrogen fixation estimates in soybeans by nodule weight, leghemoglobin content, and acetylene reduction

1973 ◽  
Vol 19 (9) ◽  
pp. 1165-1168 ◽  
Author(s):  
H. S. Johnson ◽  
D. J. Hume
Keyword(s):  
Nitrogen Fixation ◽  
Glycine Max ◽  
Acetylene Reduction ◽  
Growth Period ◽  
Growing Season ◽  
Field Conditions ◽  
Soybean Cultivar ◽  
Fresh Weight ◽  
Stages Of Development ◽  
Glycine Max L

Nodule leghemoglobin content, acetylene reduction rates, and nodule weight determinations were made during an entire growth period of soybean (Glycine max (L.) Merr. cv. Altona) plants grown under field conditions. High correlations within most sampling dates were found between each pair of possible comparisons of these indicators of nitrogen fixation.Rates of conversion of acetylene to ethylene per milligram leghemoglobin constantly decreased during the growing season, whereas leghemoglobin content per gram nodule fresh weight remained relatively constant. These results indicate that leghemoglobin content of nodules could be used to compare rates of nitrogen fixation in plants of a soybean cultivar at similar stages of development but should not be used to compare fixation rates in plants at different stages in ontogeny.

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