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Effect of ammonium fixation on estimation of soil microbial biomass nitrogen

, : Effect of ammonium fixation on estimation of soil microbial biomass nitrogen. Pedosphere 4(4): 321-329

The effect of ammonium fixation on the estimation of soil microbial biomass N was studied by the standard fumigation-incubation (FI) and fumigation-extraction (FE) methods. The NO3-N content of fumigated soil changed little during incubation, while the fixed NH4+ in soil capable of fixing NH4+ increased with the increase of K2SO4-extractable NH4-N. One day fumigation increased both extractable NH4+ and fixed NH4+. However, prolonged fumigation gave no further increase.


Other references

Wollenberger, A.; Will, H., 1978: Protein kinase-catalyzed membrane phosphorylation and its possible relationship to the role of calcium in the adrenergic regulation of cardiac contraction. Life Sciences 22(13-15): 1159-1178

Groza, N.V.; Ivanov, I.V.; Romanov, S.G.; Shevchenko, V.P.; Myasoedov, N.F.; Nigam, S.; Myagkova, G.I., 2004: Synthesis of tritium labelled 3 -HETE and 3 ,18 -DiHETE through a common synthetic route. An efficient procedure for the synthesis of 3-hydroxyoxylipins labelled with tritium on all double bond positions is reported. The synthetic scheme involves a joint route for the formation of tetraacetylenic precursors followed by stereoselective...

Malmgren, R.; Olsson, P.; Tornling, G.; Unge, G., 1979: Migraine, a platelet disorder. Lancet 2(8153): 1198-1198

Weiner, M.W.; Friedl, K.E.; Pacifico, A.; Chapman, J.C.; Jaffee, M.S.; Little, D.M.; Manley, G.T.; McKee, A.; Petersen, R.C.; Pitman, R.K.; Yaffe, K.; Zetterberg, H.; Obana, R.; Bain, L.J.; Carrillo, M.C., 2013: Military risk factors for Alzheimer's disease. Traumatic brain injury (TBI) and post-traumatic stress disorder (PTSD) are signature injuries of the wars in Iraq and Afghanistan and have been linked to an increased risk of Alzheimer's disease (AD) and other dementias. A meeting hosted by t...

Kishi, M.; Ascoli, M., 2000: The C-terminal tail of the rat lutropin/choriogonadotropin receptor independently modulates human CG-induced internalization of the cell surface receptor and the lysosomal targeting of the internalized hCG-receptor complex. The analysis of 21 progressive truncations of the C-terminal tail of the rat LH/CG receptor (rLHR) revealed the presence of a region delineated by residues 628-649 that, when removed, enhanced the degradation of the internalized human (h)CG. The a...

Glaser, J.P., 2000: What happened to the value?. Healthcare Informatics 16(9): 114-114

Ehrig, K.; Hoppe, J.; Friedl, P.; Schairer, H.U., 1986: An antibody-binding site in the native enzyme between amino acid residues 205-287 of the gamma-subunit of F1 from Escherichia coli. A monoclonal antibody was isolated specific for the isolated denatured gamma-subunit of F1 from Escherichia coli and binding to native F1. The binding site of this antibody was identified between amino acid residues 205-287 of the polypeptide chai...

Aboulroos S.A.; Nielsen N.E., 1979: Effects of phosphorus placement in varying confined volumes of soil on fineness and density of barley roots and the mean rate of nutrient uptake per root unit. Fineness and density of barley roots did not increase in P fertilized soil, which constituted 10, 20, 30, 50 and 100% of the total volume of a sandy soil, low in P, although only a part of the root system was developed in the P fertilized soil. Th...

Shen, Z.; Cao, J.; Zhang, L.; Zhao, Z.; Dong, J.; Wang, L.; Wang, Q.; Li, G.; Liu, S.; Zhang, Q., 2015: Characteristics of surface O₃ over Qinghai Lake area in Northeast Tibetan Plateau, China. Surface O3 was monitored continuously during Aug. 12, 2010 to Jul. 21, 2011 at a high elevation site (3,200 m above sea level) in Qinghai Lake area (36°58'37″N, 99°53'56″E) in Northeast Tibetan Plateau, China. Daily average O3 rang...

Guo, S.-jia; Liu, S.-ru, 1992: A study on bionomics of Dryocosmus kuriphilus Yasumatsu and its control. Entomological Knowledge 29.5: 275-277