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Effect of pentachlorophenol on asymbiotic nitrogen fixation in soil
1981
Tam, T.Y. | Trevors, J.T. (Waterloo Univ., Ont. (Canada))
The effect of 50, 100, 150, and 400 mu-g sodium pentachlorophenate (Na-PCP) per gram soil was studied in nonsterile soil incubated under aerobic and anerobic conditions, and in sterilized soil inoculated with Azotobacter sp. isolated from the soil. N(,2) fixation was determined by acetylene reduction. Pentachlorophenate at a concentration of 50 mu-g/g had an inhibitory effect in nonsterile soil incubated aerobically while strong inhibition of dinitrogen fixation in nonsterile soil occurred in the presence of 100 mu-g/g and above. The EC(,50) values for the inhibition of nitrogenase activity in nonsterile soil incubated aerobically and anaerobically and in sterlilized soil inoculated with Azotobacter sp. suspensions were 49.8 +/- 1.4 mu-g Na-PCP/g, 186.8 +/- 2.8 mu-g Na-PCP/g, and 660.8 +/- 29.3 mu-g Na-PCP/g, respectively.
Показать больше [+] Меньше [-][A case of air pollution and its incidence on natural environment]
1981
Rodriguez R, O.
[Environmental health activities of the Ministry of Health [Chile]]
1981
Corey, G. (Ministerio de Salud, Santiago (Chile))
[Use of herbicides and environmental pollution]
1981
Kogan A, M. (Universidad de Chile, Santiago. Facultad de Ciencias Agrarias, Veterinarias y Forestales)
[Use of fungicides on fruit for export and the domestic market [residues]]
1981
Morales M, A.R. (Universidad de Chile, Santiago. Facultad de Ciencias Agrarias, Veterinarias y Forestales. Dept. de Sanidad Vegetal)
[Chemical teratogens]
1981
Paz de la Vega S, Y. (Universidad de Chile, Santiago. Facultad de Ciencias Agrarias, Veterinarias y Forestales)
[Industrial molybdenosis in bovines]
1981
Parada, R. (Universidad de Chile, Santiago. Facultad de Ciencias Agrarias, Veterinarias y Forestales. Dept. de Patologia)
[Content of arsenic in algae]
1981
Aguirre del Real, S. | Diaz Schulze, O. (Universidad de Santiago (Chile))
[Research works related with environmental polluters carried out by the Nutrition and Dietetics Department, Faculty of Farmacy, University of Conception [pesticides, fishery products, forage, food]]
1981
Villegas, R.