Changes in the enzymatic activity of soil samples upon their storage

2009 ◽  
Vol 42 (12) ◽  
pp. 1380-1385 ◽  
Author(s):  
E. V. Dadenko ◽  
K. Sh. Kazeev ◽  
S. I. Kolesnikov ◽  
V. F. Val’kov
Keyword(s):  
Enzymatic Activity ◽  
Soil Samples ◽  
Enzymatic Activity Of Soil

scholarly journals The changes of enzymatic activity of soil under eastern galega (Galega orientalis Lam.) after NPKCa fertilization

2014 ◽  
Vol 60 (No. 3) ◽  
pp. 123-128 ◽  
Author(s):  
B. Symanowicz ◽  
S. Kalesa ◽  
W. Skorupka ◽  
M. Niedbała
Keyword(s):  
Alkaline Phosphatase ◽  
Acid Phosphatase ◽  
Enzymatic Activity ◽  
Field Experiment ◽  
Soil Samples ◽  
Mineral Fertilization ◽  
Legume Plant ◽  
Ap Horizon ◽  
Galega Orientalis ◽  
Enzymatic Activity Of Soil

Changes in the enzymatic activity of soil variably fertilized with NPKCa were investigated in a field experiment carried out in 2005&ndash;2010. The study was conducted with a legume plant, i.e. eastern galega (Galega orientalis Lam.). The experiment was completely randomized and carried out in three replications with the following mineral fertilization: control, N, P, K, NPK, NP, NK, PK, NPKCa, PKCa, Ca, NKCa, and NPCa. Mineral fertilization was applied in kg/ha: (N-20, P-50, K-160, Ca-150). The soil samples collected from the Ap horizon (0&ndash;30 cm) of the rhizosphere in spring after the 1<sup>st</sup>, 2<sup>nd</sup> and 3<sup>rd</sup> swathing had a pH<sub>KCl</sub> in range from 6.55 to 6.93. The activity of acid phosphatase and alkaline phosphatase was at a low level. The highest activity of urease was recorded in the soil fertilized with NPK, whereas the highest activity of dehydrogenases was in the soil fertilized with PKCa.

scholarly journals MICROBIAL ACTIVITY OF DARK RED LATOSOL SAMPLES STORED AT DIFFERENT TEMPERATURES

1998 ◽  
Vol 29 (3) ◽  
pp. 164-166 ◽  
Author(s):  
Francisco Cleber Sousa Vieira ◽  
Ely Nahas
Keyword(s):  
Alkaline Phosphatase ◽  
Acid Phosphatase ◽  
Enzymatic Activity ◽  
Low Temperatures ◽  
Acid Phosphatase Activity ◽  
Room Temperature ◽  
Soil Samples ◽  
Different Temperatures ◽  
Red Latosol ◽  
Enzymatic Activity Of Soil

The enzymatic activity of soil samples stored at temperatures of 5 to -12oC and at room temperature for 0-32 weeks was determined. While alkaline phosphatase and dehydrogenase activity was decreased compared to control in samples stored at low temperatures, acid phosphatase activity showed no significant change.

Soil response to chemicals used in a field experiment

2013 ◽  
Vol 27 (2) ◽  
pp. 151-158 ◽  
Author(s):  
S. Jezierska-Tys ◽  
A. Rutkowska
Keyword(s):  
Alkaline Phosphatase ◽  
Enzymatic Activity ◽  
Field Experiment ◽  
Soil Microorganisms ◽  
Block Design ◽  
Soil Samples ◽  
Alkaline Phosphatases ◽  
Soil Response ◽  
Negative Effect ◽  
Set Up

Abstract The effect of chemicals (Reglone 200 SL and Elastiq 550 EC) on soil microorganisms and their enzymatic activity was estimated. The study was conducted in a field experiment which was set up in the split-block design and comprised three treatments. Soil samples were taken six times, twice in each year of study. The results showed that the application of chemicals generally had no negative effect on the number of soil microorganisms. The application of Reglone 200 SL caused an increase of proteolytic and ureolytic activity and affected the activity of dehydrogenases, acid and alkaline phosphatases in the soil. The soil subjected of Elastiq 550 EC was characterized by lower activity of dehydrogenases, protease, urease and alkaline phosphatase.

Assessment of phytotoxicity and impact on the enzymatic activity of soil microorganisms caused by veterinary antibiotics used in Brazilian farms

2021 ◽  
pp. 1-10
Author(s):  
Leonardo Benassi-Borba ◽  
Carla M. P. Dal’Lin ◽  
Renan C. Testolin ◽  
Neiva M. Batista Vieira ◽  
Cristiane V. Tagliari Corrêa ◽  
...  
Keyword(s):  
Enzymatic Activity ◽  
Soil Microorganisms ◽  
Veterinary Antibiotics ◽  
Enzymatic Activity Of Soil

scholarly journals Enzymatic activity measured by microcalorimetry in soil amended with organic residues

2011 ◽  
Vol 35 (4) ◽  
pp. 1167-1178 ◽  
Author(s):  
Karina Cenciani ◽  
Sueli dos Santos Freitas ◽  
Silvana Auxiliadora Missola Critter ◽  
Claudio Airoldi
Keyword(s):  
Enzyme Activity ◽  
Enzymatic Activity ◽  
Thermal Effect ◽  
Soil Samples ◽  
Cattle Manure ◽  
Control Treatment ◽  
Municipal Sewage Sludge ◽  
Organic Residues ◽  
Earthworm Casts ◽  
Commercial Enzymes

Enzymatic activity is an important property for soil quality evaluation. Two sequences of experiments were carried out in order to evaluate the enzymatic activity in a soil (Rhodic Eutrudox) amended with cattle manure, earthworm casts, or sewage sludges from the municipalities of Barueri and Franca. The activity of commercial enzymes was measured by microcalorimetry in the same soil samples after sterilization. In the first experiment, the enzyme activities of cellulase, protease, and urease were determined in the soil samples during a three month period. In the second sequence of experiments, the thermal effect of the commercial enzymes cellulase, protease, and urease on sterilized soil samples under the same tretaments was monitored for a period of 46 days. The experimental design was randomized and arranged as factorial scheme in five treatments x seven samplings with five replications. The treatment effects were statistically evaluated by one-way analysis of variance. Tukey´s test was used to compare means at p < 0.05. The presence of different sources of organic residues increased the enzymatic activity in the sampling period. Cattle manure induced the highest enzymatic activity, followed by municipal sewage sludge, whereas earthworm casts induced the lowest activity, but differed from control treatment. The thermal effect on the enzyme activity of commercial cellulase, protease, and urease showed a variety of time peaks. These values probably oscillated due to soil physical-chemical factors affecting the enzyme activity on the residues.

scholarly journals THE EFFECT OF NITROGEN ON THE MICROBIOLOGICAL AND BIOCHEMICAL PROPERTIES OF ZINC-CONTAMINATED SOIL

2017 ◽  
Vol 25 (1) ◽  
pp. 13-22 ◽  
Author(s):  
Rafał STRACHEL ◽  
Jadwiga WYSZKOWSKA ◽  
Małgorzata BAĆMAGA
Keyword(s):  
Enzymatic Activity ◽  
Biochemical Properties ◽  
Soil Samples ◽  
Nitrogen Fertilisation ◽  
Water Capacity ◽  
Organotrophic Bacteria ◽  
Maximum Water ◽  
Copiotrophic Bacteria ◽  
Stimulation Of ◽  
Properties Of Soil

The aim of these studies was to determine the influence of excessive zinc doses on the microbiological and enzymatic properties of soil. Also, an evaluation of the possibility to stimulate remediation processes by nitrogen fertilisation of the soil was attempted. Zinc was applied to loamy sand in the amounts of 0, 250, 500, 750, 1000, 1250 mg Zn2+ kg–1 DM soil, while nitrogen in the form of urea in doses of 0, 250, 500 mg N kg–1 DM soil. Soil samples were incubated at a temperature of 25 °C, maintaining a constant humidity equal to 50% of the maximum water capacity. In the 2nd and 20th week of the experiment, the following factors were determined: activity of dehydrogenases and catalase, and number of organotrophic bacteria, copiotrophic bacteria, oligotrophic bacteria, actinomycetes, and fungi. Zinc inhibited the enzymatic activity of the soil, while causing a slight increase in populations of microorganisms. Only fungi reacted unequivocally positively to contamination of the soil with zinc, therefore demonstrating changes in the biodiversity of microorganisms. Nitrogen fertilisation of the soil resulted in stabilization of the environment contaminated with zinc by stimulation of growth of microorganisms resistant to the influence of this metal.

scholarly journals Microbial and enzymatic activity of soil contaminated with a mixture of diflufenican + mesosulfuron-methyl + iodosulfuron-methyl-sodium

2014 ◽  
Vol 22 (1) ◽  
pp. 643-656 ◽  
Author(s):  
Małgorzata Baćmaga ◽  
Agata Borowik ◽  
Jan Kucharski ◽  
Monika Tomkiel ◽  
Jadwiga Wyszkowska
Keyword(s):  
Enzymatic Activity ◽  
Enzymatic Activity Of Soil

scholarly journals Diagnosis of the Content of Selected Heavy Metals in the Soils of the Pałuki Region Against their Enzymatic Activity

2013 ◽  
Vol 39 (3) ◽  
pp. 23-32 ◽  
Author(s):  
Joanna Lemanowicz ◽  
Agata Bartkowiak
Keyword(s):  
Heavy Metals ◽  
Enzymatic Activity ◽  
Plant Species ◽  
Hydrolytic Enzymes ◽  
Soil Samples ◽  
River Valley ◽  
Vegetable Crops ◽  
Soil Material ◽  
The Right ◽  
Very High

Abstract The paper presents the research results for the soils sampled from the area located in the eastern part of the Chodzieskie Lakes, between the Middle Noteć River Valley and the Wełna River Valley, the right tributary of the Warta River. The research involved 7 soil samples from the surface horizons, allocated to the cultivation of various plant species (cereals and vegetable crops). The following were determined in the soil material: the content of phytoavailable forms of selected heavy metals Zn, Cu, Pb, Ni, Fe and Mn, active and available to plants phosphorus against the activity of selected oxydo-reduction and hydrolytic enzymes. The soil under the vegetable crops showed a very high richness in phosphorus available to plants, which must have been related to an intensive fertilisation. There were identified relatively low contents of the available forms of the heavy metals investigated, the fact that points to their natural content in soil, which triggered the inhibition of neither the oxydo-reduction nor hydrolytic enzymes.

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