Enzymatic activities in an arid soil amended with urban organic wastes: Laboratory experiment

Pascual, José Antonio; Hernández, Teresa; Izquierdo, Carlos García; Ayuso, Miguel

doi:10.1016/s0960-8524(97)00171-5

Cited by 155 publications

(93 citation statements)

References 18 publications

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“…Indeed, it confirms the results on assessment of enzymatic activities of actinomycetales performed in previously study (Mokni-Tlili et al, 2010;2011b) showing that MSWC was a stimulator of enzymatic activities in soil and a potential source ofenzyme-producing bacteria. This finding was corroborated by several reports (Crecchio et al, 2004;Pascual et al 1998;Serra-Wittling et al, 1996). Therefore, the addition of mature MSWC to soil improves soil quality, promotes plant development and reduces by antagonistic bacteria the number of diseases caused by pathogens in soil (Cotxarrera et al, 2002).…”

Section: Case Of Bacteria T and Mswcsupporting

confidence: 82%

Antagonistic interactions among cultivable actinomycetes isolated from agricultural soil amended with organic residues

Mokni‐Tlili¹,

Jedidi²,

Hassen³

2013

Afr. J. Microbiol. Res.

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The present work focuses on the antagonistic interactions among cultivable actinomycetes isolated from agricultural soil and organic amendments (farmyard manure and municipal solid waste compost). Antagonistic interactions, assayed by the double-layer agar method, were checked among isolates obtained from (i) the same treatment (ii) control soil (unamended) against those from amendments and (iii) each treatment against tow phytopatogenic bacteria (Agrobacterium tumefaciens B6 and C58). A high suppressive interaction ratio (≥ 50%) was registered some either the treatment soil. It was found that amendments application decreased this suppressive interaction ratio between actinomycetales. But, it increases the ratio of the antagonistic actinomycetales from soil against Agrobacterium tumefaciens confirming the role of these organic residues as fertilizers. It was also shown, based on the phylogenetic affiliation of bacteria, that the antagonism can play a significant role in structuring bacterial communities in soil.

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Section: Case Of Bacteria T and Mswcsupporting

confidence: 82%

Antagonistic interactions among cultivable actinomycetes isolated from agricultural soil amended with organic residues

Mokni‐Tlili¹,

Jedidi²,

Hassen³

2013

Afr. J. Microbiol. Res.

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“…The reduction in dehydrogenase activity from T 1 to T 2 was expected according to Pascual et al (1997Pascual et al ( , 1998, who studied the regeneration of an arid soil using urban wastes.…”

Section: Discussionmentioning

confidence: 94%

Enzyme activity and C and N pools in soil following application of mulches

Masciandaro¹,

Ceccanti²,

Benedicto³

et al. 2004

Can. J. Soil. Sci.

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A field experiment was carried out to evaluate the effects of some mulching materials on soil biochemical properties that represent a component of soil quality and functionality. Wheat straw, dairy manure compost, and black polyethylene were used in the mulching experiments of a soil seeded with forage maize. Soil samples were taken from the surface (0–10 cm) and subsurface (10–20 cm) layers 1 and 4 mo after treatments were applied. Soil productivity, biochemical and chemical properties were determined. Compost treatment showed the highest agronomic yield due to the release of nutrients for plant nutrition and soil metabolism. Dehydrogenase activity was used as a measurement of overall microbial activity, whereas β-glucosidase and urease hydrolase activities were determined as an expression of C and N cycles. In addition, a ratio between dehydrogenase activity and water soluble carbon (defined as “metabolic potential index”) was calculated, in order to better represent soil metabolic potential. Compost-mulch treatment showed the lowest ratio values, while straw mulch had the highest value. A similar trend was found for β-glucosidase activity. The data confirmed the validity and sensitivity of the metabolic potential index and β-glucosidase enzyme in monitoring the change of soil biochemical properties and of soil quality during soil management practices. Key words: Soil enzyme activities, mulching practice, soil quality

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“…Soil biochemical response to manuring practices usually is intense especially in the first stages of incubation (1-2 mo); thereafter biochemical activity stabilizes to a certain level depending on soil characteristics, organic matter source and type of experiments (Martens et al 1992). Pascual et al (1997) in studying seven enzyme activities in a sandy-loam soil sampled in the same arid area of soil B and treated with different sources of organic matter, found high stimulation of enzyme activity during the first days of incubation, followed by a fluctuation and then by a stabilization after 2-3 mo. The study of the enzymatic activities after a period of stabilization gave more real evidence for potential soil regeneration than when observations were made during the initial period of incubation (Beloso et al 1993).…”

Section: Biochemistrymentioning

confidence: 99%

Changes in soil biochemical and cracking properties induced by "living mulch" systems

Masciandaro¹,

Ceccanti

Izquierdo³

1997

Can. J. Soil. Sci.

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Changes in soil biochemical and cracking properties induced by "living mulch" systems. Can. J. Soil Sci. 77: 579-587. A vermicompost (VC) from biological sludges was incorporated into two soils, or applied on their surfaces as mulch with the addition of worms (Eisenia foetida) or grass seeds (Lepidium sativum) in the experiments of "living mulch". The purpose of this research was to study the influences of different methods of organic matter application on soil chemico-physical and biochemical properties. Two texturally different soils from a Mediterranean climate, a clayey and a sandy soil, were tested in laboratory-scale experiments. Water-soluble C (WSC), NO 3 -N/NH 4 -N ratio (nitrification index), and enzyme activities (BAA-protease, dehydrogenase, and β-glucosidase) were taken as indices of soil biochemical fertility as they are related to soil physical properties and microbial activities. Surface cracking area in both soils increased, with the formation of small-medium (<1000 µm) cracks. The positive changes in cracking, the high index of nitrification, and the evolution of WSC provided evidence for high metabolism in mulched soils. Enzyme activity was similar in living mulch and control soils, and was highest when VC was directly incorporated. Significant correlations (P < 0.05) occurred between enzyme activities, organic substrates, and soil cracking area for both soils. The selected parameters were indicators of the different practices of organic matter application.

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Enzymatic activities in an arid soil amended with urban organic wastes: Laboratory experiment

Cited by 155 publications

References 18 publications

Antagonistic interactions among cultivable actinomycetes isolated from agricultural soil amended with organic residues

Antagonistic interactions among cultivable actinomycetes isolated from agricultural soil amended with organic residues

Enzyme activity and C and N pools in soil following application of mulches

Changes in soil biochemical and cracking properties induced by "living mulch" systems

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