scholarly journals Seasonality and moisture regime control soil respiration, enzyme activities, and soil microbial biomass carbon in a semi-arid forest of Delhi, India

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Urvashi Tomar ◽  
Ratul Baishya
Keyword(s):  
Microbial Biomass ◽  
Soil Respiration ◽  
Carbon Cycling ◽  
Significant Role ◽  
Soil Enzymes ◽  
Microbial Biomass Carbon ◽  
Phenol Oxidase ◽  
Peak Time ◽  
Biomass Carbon ◽  
Semi Arid

Abstract Soil respiration, soil enzymes, and microbial biomass are important in carbon cycling in the terrestrial ecosystem which is generally limited by environmental factors and soil carbon availability. Hence, we tried to assess the factors affecting the functional aspects of these processes in a semi-arid climate. We monitored soil respiration (surface) using a portable infrared gas analyzer (Q-Box SR1LP Soil Respiration Package, Qubit Systems, Canada) equipped with a soil respiration chamber (Model: G 180). Soil respiration was measured at midday during each season throughout the study period. Soil enzymatic activities and microbial biomass carbon (MBC) were analyzed following the standard protocol for a year during peak time in four seasons at 0–10 cm and 10–20 cm depth. Soil respiration shows significant variation with highest in monsoon (3.31 μmol CO2 m−2 s−1) and lowest in winter (0.57 μmol CO2 m−2 s−1). Similarly, β-glucosidase, dehydrogenase, and phenol oxidase activity ranged from 11.15 to 212.59 μg PNP g−1 DW h−1, 0.11 to 16.47 μg TPF g−1 DW h−1, and 4102.95 to 10187.55 μmol ABTS+ g−1 DW min−1, respectively. MBC ranged from 17.08 to 484.5 μg C g−1. Besides, soil respiration, soil enzymes (except β-glucosidase), and MBC were significantly correlated with soil moisture. Seasonality, optimum moisture and temperature played a significant role in determining variations in soil microbiological processes (except β-glucosidase activity); the carbon cycling in the study area is assisted by enzyme activity; dehydrogenase and phenol oxidase played a significant role in soil respiration; hence, this landscape is sensitive to environmental changes.

Date palm waste biochars alter a soil respiration, microbial biomass carbon, and heavy metal mobility in contaminated mined soil

2017 ◽  
Vol 41 (4) ◽  
pp. 1705-1722 ◽  
Author(s):  
Mohammad I. Al-Wabel ◽  
Adel Rabie A. Usman ◽  
Abdullah S. Al-Farraj ◽  
Yong Sik Ok ◽  
Adel Abduljabbar ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Microbial Biomass ◽  
Soil Respiration ◽  
Date Palm ◽  
Microbial Biomass Carbon ◽  
Metal Mobility ◽  
Biomass Carbon ◽  
Heavy Metal Mobility ◽  
Date Palm Waste ◽  
Palm Waste

scholarly journals Comparative analysis of certain soil microbiological characteristics of the carbon cycle

2016 ◽  
pp. 137-141
Author(s):  
Bence Mátyás ◽  
Judit Horváth ◽  
János Kátai
Keyword(s):  
Microbial Biomass ◽  
Soil Respiration ◽  
Carbon Cycle ◽  
Microbial Biomass Carbon ◽  
Co2 Production ◽  
Biomass Carbon ◽  
Soil Microbial ◽  
Microbiological Characteristics ◽  
Long Term Experiment

In our researches, we examine the soil microbial parameters related to the carbon cycle. In this study, we compare the changes of microbial biomass carbon (MBC) and the soil CO2 production in soil samples which were taken in spring and autumn. The 30 years old long-term experiment of Debrecen-Látókép is continued in our experiments. The long-term fertilization experiment was set in 1983, and our sample was taken in spring 2014. The examinations of soil respiration processes and factors that influence soil respiration are required in optimal management. In our study, we interested to know how the growing levels of fertilization influence the soil respiration and microbial biomass carbon under non-irrigated and irrigated conditions in maize mono, bi, and triculture.

scholarly journals Mineralization of Organic Residues, Dynamics of Microbial Biomass and Enzyme Activities in an Aridisol and Alfisol Soil under Rain-Fed Dry Farming

2018 ◽  
Vol 1 (1) ◽  
pp. 25-36
Author(s):  
Rehmat Ullah ◽  
Shehzada Munawar Mehdi ◽  
Khalid Saif Ullah Khan ◽  
Aftab Ahmed Sheikh ◽  
Endang Sulistyowati ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Soil Enzymes ◽  
Crop Residues ◽  
Microbial Biomass Carbon ◽  
Mineralization Rate ◽  
Biomass Carbon ◽  
Soil Series ◽  
Organic Residues ◽  
Dry Farming ◽  
Better Than

This study was planned with hypothesis to quantify mineralization rate of wheat and groundnut straw spiked in Kahuta and Guliana soil series. Results revealed that groundnut and wheat strawspiked soils had increased quantum of microbial biomass carbon (Cmic), biomass nitrogen (Nmic) and biomass phosphorous (Pmic) and activities of enzyme dehydrogenase (DHA) and alkaline phosphatase (APA) than un-amended soils. Initially, the contents of soil Cmic, Nmic, Pmic, DHA, and APA increased gradually during 2-14th days of incubation (DAI), again increased significantly at 28th DAI and then decreased slowly at 60th DAI in all treatments under both series. Hence, the addition of groundnut straw mineralized better than to other organic sources in both soil series.  These results suggested that groundnut straw must be incorporated in soil one month before sowing of crop to enhance crop yield under rain-fed dry farming.Key words: Crop Residues, Microbial Biomass, Soil Enzymes, Aridisol, Alfisols

scholarly journals Correction to: Date palm waste biochars alter a soil respiration, microbial biomass carbon, and heavy metal mobility in contaminated mined soil

2017 ◽  
Vol 41 (4) ◽  
pp. 1809-1809 ◽  
Author(s):  
Mohammad I. Al-Wabel ◽  
Adel Rabie A. Usman ◽  
Abdullah S. Al-Farraj ◽  
Yong Sik Ok ◽  
Adel Abduljabbar ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Microbial Biomass ◽  
Soil Respiration ◽  
Date Palm ◽  
Microbial Biomass Carbon ◽  
Metal Mobility ◽  
Biomass Carbon ◽  
Heavy Metal Mobility ◽  
Date Palm Waste ◽  
Palm Waste

scholarly journals The Potential of Biochar Made from Agricultural Residues to Increase Soil Fertility and Microbial Activity: Impacts on Soils with Varying Sand Content

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1174
Author(s):  
Martin Brtnicky ◽  
Tereza Hammerschmiedt ◽  
Jakub Elbl ◽  
Antonin Kintl ◽  
Lucia Skulcova ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Soil Respiration ◽  
Soil Fertility ◽  
Microbial Activity ◽  
Plant Biomass ◽  
Microbial Biomass Carbon ◽  
Metabolic Quotient ◽  
Biomass Carbon ◽  
Carbon And Nitrogen ◽  
Biochar Amendment

Different types of soil respond variably to biochar amendment. Soil structure and fertility are properties which strongly affect the impacts of biochar on soil fertility and microbial activity. A pot experiment with lettuce was conducted to verify whether biochar amendment is more beneficial in sandy soil than in clay soil. The nutrient content (carbon and nitrogen), microbial biomass carbon, soil respiration, metabolic quotient, and plant biomass yield were determined. The treatments were prepared by mixing silty clay loam (Haplic Luvisol) with a quartz sand in ratios of 0%, 20%, 40%, 60%, 80%, and 100% of sand; the same six treatments were prepared and amended with biochar (12 treatments in total). Soil carbon and nitrogen, microbial biomass carbon, and soil respiration were indirectly dependent on the descending sand ratio, whereas the metabolic quotient increased with the ascending sand ratio. The biochar’s effects were positive for total carbon, microbial biomass carbon, metabolic quotient, and plant biomass in the sand-rich treatments. The maximum biochar-derived benefit in crop yield was found in the 100% sand + biochar treatment, which exhibited 24-fold (AGB) and 11-fold (root biomass) increases compared to the unamended treatment. The biochar application on coarse soil types with lower fertility was proven to be favorable.

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