Results 101 to 110 of about 190 (128)
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Biology and Fertility of Soils, 1996
The enzyme kinetics of an immobilized arylsulfatase reactor were examined. We found that the optimum operating conditions for the reactor were pH 7.0 and 25°C, using p-nitrophenyl sulfate in acetate buffer. The Michaelis constant (Km) of immobilized arylsulfatase was 5.29 mM, compared with a Km of 2.18 mM for soluble arylsulfatase from the same source (
J. K. Whalen, P. R. Warman
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The enzyme kinetics of an immobilized arylsulfatase reactor were examined. We found that the optimum operating conditions for the reactor were pH 7.0 and 25°C, using p-nitrophenyl sulfate in acetate buffer. The Michaelis constant (Km) of immobilized arylsulfatase was 5.29 mM, compared with a Km of 2.18 mM for soluble arylsulfatase from the same source (
J. K. Whalen, P. R. Warman
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RADIOCARBON DATE FOR A CRYOTURBATED ALPINE REGOSOL IN SOUTH CENTRAL BRITISH COLUMBIA
Canadian Journal of Soil Science, 1971not available
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The effect of farming system on labile fractions of organic matter in Calcari-Epileptic Regosols
Journal of Plant Nutrition and Soil Science, 2000Total soil organic carbon (TOC) and nitrogen (Nt) and labile soil N and C fractions were investigated in a field experiment in the Swabian Mountains, Germany. The plots used had been farmed conventionally or organically since 1972 and treated with either mineral or organic fertiliser.
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Nutrient requirements (N, P, S) of microbial biomass formation in a regosol of Japan
2001The critical N, P and S concentrations in the soil microbial biomass (biomass) and minimum available N, P and S in soils to obtain the critical N, P and S concentration in the biomass was examined. A granitic regosol was mixed with organic C (2 g C kg −1 soil as rice straw (Exp. 1, 2) or 3 g C kg −1 soil as cellulose) and mineral nutrients (4 levels of
K. Kouno +3 more
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Nitrogen uptake and transpiration by plant effects on nitrate leaching from granitic regosol [PDF]
, 2007 Field and soil column experiments were conducted to analyze the effects of N uptake and transpiration by corn on nitrate-nitrogen (NO3-N) leaching in a granitic regosol and to evaluate the contribution of plant growth to the reduction of NO3-N leaching.
Hashimoto, Maho +3 more
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Changes in some soil parameters of Regosols under the influence of land use
2020The Sustainability Land Management Assessment System facilitates the aim to link all aspects of selected land use to the many interacting conditions – environmental, economic and social – that together determine whether this form of land management is sustainable or likely to lead to sustainability.
Kirilov, Ivaylo +3 more
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