Soil Respiration

Ölinger, R.; Beck, T.; Heilmann, B.; Beese, F.

doi:10.1007/978-3-642-60966-4_6

Cited by 19 publications

(10 citation statements)

References 10 publications

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“…Microbial biomass carbon (MBC) of soil sub‐samples was determined by a fumigation–extraction method (Amato and Ladd, ), using ninhydrin‐N reactive compounds extracted from soils with KCl after a 10‐day fumigation period. Soil respiration was measured as described by Ohlinger () and metabolic quotient (qCO 2 ) was calculated by dividing CO 2 ‐C released from the sample by the microbial biomass carbon content.…”

Section: Methodsmentioning

confidence: 99%

THE EFFECTS OF ACACIA TORTILIS SUBSP. RADDIANA, SOIL TEXTURE AND SOIL DEPTH ON SOIL MICROBIAL AND BIOCHEMICAL CHARACTERISTICS IN ARID ZONES OF TUNISIA

2011

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The objectives of this study, conducted in Bou‐Hedma National Park, were to quantify the effects of the dominant legume Acacia tortilis subsp. raddiana on soil properties. Three sites with differing soil texture were studied; the first with a gravelly‐sand texture, the second with a sandy‐loam texture and the third with a loam texture. At each study site, two subhabitats were distinguished, under Acacia canopies (canopied soil) and open areas (uncanopied soil). Soil organic carbon, microbial biomass and microbial coefficient were found to be significantly greater in canopied soil, compared with uncanopied soil. The lower metabolic quotient under this legume indicated a higher carbon use efficiency of microorganisms in soil. The enzyme activities (dehydrogenase, phosphatase and β‐glucosidase) expressing soil microbial activity were significantly higher under Acacia canopies. Therefore, A. raddiana planting can be considered an effective and applicable measure to restore vegetation and control desertification in arid regions. On account of the variability of soil texture in the park, three sites were studied: gravelly‐sand, sandy‐loam and loam soils. The highest microbial density and activity were registrated in sandy‐loam soil. Microbial biomass and activity increased gradually and significantly to a maximum at 20–30 cm and subsequently decreased at 30–50 cm. The results allow us to conclude that soil texture and soil depth can play an important role in the extent of soil properties. Copyright © 2011 John Wiley & Sons, Ltd.

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Section: Methodsmentioning

confidence: 99%

THE EFFECTS OF ACACIA TORTILIS SUBSP. RADDIANA, SOIL TEXTURE AND SOIL DEPTH ON SOIL MICROBIAL AND BIOCHEMICAL CHARACTERISTICS IN ARID ZONES OF TUNISIA

2011

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“…Total solids (TS) content was determined by weighing samples before and after drying overnight at 105 C (Sierra et al, 2001). Mineral matter was determined after furnacing samples at 550 C for 4 h (Ohlinger, 1995). The difference between total solids and mineral matter was defined as organic matter.…”

Section: Physical-chemical Analysis Of Sandmentioning

confidence: 99%

Removal of organic pollutants and nutrients from olive mill wastewater by a sand filter

Achak

Mandi

Ouazzani

2009

Journal of Environmental Management

111

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“…Organic C was estimated in finely powdered (0.5 mm sieved) soil by Walkley and Black (1934) method using potassium dichromate. For measuring soil respiration rate, field moist soil samples were collected from 0-15 cm deep after harvest and the method of estimation was carbon dioxide (CO 2 ) trapping in sodium hydroxide (NaOH) (Ohlinger 1996). Soil microorganisms were enumerated by soil dilution and plating on appropriate media for Azotobacter (Brown, Burlingham, and Jackson 1962), phosphate-solubilizing bacteria (Pikovskaya 1948), and by most probable number (MPN) technique for Azospirillum (Dobereiner and Day 1976).…”

Section: Plant and Soil Studiesmentioning

confidence: 99%

Productivity, Nutrient Balance, Soil Quality, and Sustainability of Rice (Oryza sativaL.) under Organic and Conventional Production Systems

Surekha

Satishkumar

2014

Communications in Soil Science and Plant Analysis

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covering 10 crop seasons [five wet (WS; Kharif) and five dry (DS; Rabi)] at the Directorate of Rice Research farm, Hyderabad, India, to compare the influence of organic and conventional farming systems on productivity of fine grain rice varieties, cumulative partial nutrient balance, and soil health/quality in terms of nutrient availability, physical and biological properties, and sustainability index. Two main plot treatments were with and without plant protection measures, and four subplot treatments were (1) control (CON), (2) inorganic fertilizers (CF), (3) organics (OF), and (4) inorganics + organics (integrated nutrient management, INM). During wet season, grain yields with CF and INMwere near stable (5.0 to 5.5 t ha −1 ) and superior to organics by 15-20% during the first 2 years, which improved with OF (4.8 to 5.4 t ha −1 ) in the later years to comparable levels with CF and INM. However, during DS, CF and INM were superior to OF for 4 consecutive years and OF recorded yields on par with CF and INM in the fifthyear. The partial nutrient balance over 10 crop seasons for N and P was positive and greater with OF and INM over CF and for K it was positive with OF alone and negative with CF and INM. There were increases in SOC and available N, P, and K by 50-58%, 3-10%, 10-30%, and 8-25% respectively, with OF, over CF at the end of 5 years. The sustainability index (SI) of the soil system was maximum with organics (1.63) and CF recorded 1.33, which was just above the minimum sustainability index of 1.30 after 5 years. Thus, organic farming needs more than 2 years to stabilize rice productivity and bring about perceptible improvement in soil quality and sustainability in irrigated rice.

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Soil Respiration

Cited by 19 publications

References 10 publications

THE EFFECTS OF ACACIA TORTILIS SUBSP. RADDIANA, SOIL TEXTURE AND SOIL DEPTH ON SOIL MICROBIAL AND BIOCHEMICAL CHARACTERISTICS IN ARID ZONES OF TUNISIA

THE EFFECTS OF ACACIA TORTILIS SUBSP. RADDIANA, SOIL TEXTURE AND SOIL DEPTH ON SOIL MICROBIAL AND BIOCHEMICAL CHARACTERISTICS IN ARID ZONES OF TUNISIA

Removal of organic pollutants and nutrients from olive mill wastewater by a sand filter

Productivity, Nutrient Balance, Soil Quality, and Sustainability of Rice (Oryza sativaL.) under Organic and Conventional Production Systems

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