Production and Persistence of Soil Enzymes With Repeated Addition of Organic Residues

Martens, Dean A.; Johanson, Jan; Frankenberger, W. T.

doi:10.1097/00010694-199201000-00008

Cited by 261 publications

(125 citation statements)

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“…Numerous studies showed that wastewater purification in the constructed wetlands are mainly attributed to the metabolism of microbes and enzyme activities in substrate (Martens et al 1992;Liang et al 2003;Duarte et al 2008;Weaver et al 2012). In this study, two parallel pilot-scale IVCW systems were employed to investigate treatment performance, microbial community structure, and enzyme activities for domestic wastewater and the results will give references for future design, application, and operation management of the constructed wetland.…”

Section: Introductionmentioning

confidence: 99%

Treatment performance and microorganism community structure of integrated vertical-flow constructed wetland plots for domestic wastewater

Chang

Dai

et al. 2012

Environ Sci Pollut Res

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In order to investigate the treatment performance and microorganism mechanism of IVCW for domestic wastewater in central of China, two parallel pilot-scale IVCW systems were built to evaluate purification efficiencies, microbial community structure and enzyme activities. The results showed that mean removal efficiencies were 81.03 % for COD, 51.66 % for total nitrogen (TN), 42.50 % for NH 4 + -N, and 68.01 % for TP. Significant positive correlations between nitrate reductase activities and TN and NH 4 + -N removal efficiencies, along with a significant correlation between substrate enzyme activity and operation time, were observed. Redundancy analysis demonstrated gram-negative bacteria were mainly responsible for urease and phosphatase activities, and also played a major role in dehydrogenase and nitrate reductase activities. Meanwhile, anaerobic bacteria, gram-negative bacteria, and saturated FA groups, gram-positive bacteria exhibited good correlations with the removal of COD (p00.388), N (p0 0.236), and TP (p00.074), respectively. The IVCW system can be used to treat domestic wastewater effectively.

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Section: Introductionmentioning

confidence: 99%

Treatment performance and microorganism community structure of integrated vertical-flow constructed wetland plots for domestic wastewater

Chang

Dai

et al. 2012

Environ Sci Pollut Res

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“…Handrix et al, (1994) and Martens et al, (1992) also reported that organic manures attributing to cementing action of polysaccharides and other organic compounds released during the decomposition of organic matters, thus leading to vegetative and reproductive stages and in turn the final yield and SWI, increased crop production which may be due to enhanced the healthy roots and more productive tillers were systematic sowing of seed at fixed spacing, compared to the conventional broadcasting method may have reduced competition among the plants. Further, adequate availability of sunlight, water, nutrients and proper aeration may have due to good tillering and high production.…”

Section: Yieldmentioning

confidence: 99%

Agronomic Evaluation of Certified Organic Wheat (Triticum aestivum L.)

lesh¹,

Abraham²

2017

Int.J.Curr.Microbiol.App.Sci

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“…Según Jenkinson (1992), los factores involucrados en la actividad microbiana, tales como temperatura, pH, humedad, disponibilidad de oxígeno, nutrientes inorgánicos y accesibilidad al sustrato, influyen en la descomposición de la materia orgánica. Así también, ha sido señalado que la actividad y estabilidad de las enzimas en el suelo es regulada por muchos factores como pH (Frankenberger & Johanson, 1983;Trasar-Cepeda & Gil-Sotres, 1987;Dick et al, 1988), biomasa microbiana (Saffigna et al, 1989;Häussling & Marschner, 1989;Srivastava & Singh, 1991), vegetación (Juma & Tabatabai, 1978;Harrison, 1983;Perucci et al, 1984;Helal & Dressler, 1987;Tarafdar, 1987), prácticas de manejo del suelo y de los cultivos (Perucci & Scarponi, 1985;Beck, 1990;Martens et al, 1992;Kandeler & Eder, 1993), materia orgánica del suelo (Juma & Tabatabai, 1978;Chhonkar & Tarafdar, 1984;Sparling et al, 1986), minerales de arcilla (Makboul & Ottow, 1979;Huang et al, 1995) y el contenido de humedad del suelo (Harrison, 1983;West et al, 1988 a,b).…”

Section: Introductionunclassified

Efecto De La Humedad, Temperatura Y Ph Del Suelo en La Actividad Microbiana a Nivel De Laboratorio

Vásquez

Zúñiga-Dávila

2008

Ecol. apl.

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ResumenEl presente estudio se realizó con la finalidad de evaluar bajo condiciones de laboratorio, la influencia de tres parámetros físico-químicos sobre la actividad microbiana en un suelo agrícola medida por la cuantificación de la producción de CO 2 y actividad deshidrogenasa. Se realizaron por separado, tres ensayos para 4 porcentajes de humedad %(v/p): 5.0 %, 10.0 %, 15.0 % y 18.0 %; 4 temperaturas: 8.0 ºC, 21.0 ºC, 27.5 ºC y 37.0 ºC; y 4 valores de pH: 4.0, 6.1, 7.8 y 8.2. Cada ensayo de cuatro tratamientos y 4 repeticiones por tratamiento se condujo siguiendo los lineamientos del diseño completamente al azar (DCA). Los mayores valores de actividad microbiana [0.097 mg CO 2 ·g-1·h-1 y 173.09 µg formazán·g-1·(24h)-1] se obtuvieron a 18% de humedad, en condiciones estándares de temperatura y pH; se encontró que la temperatura de 27.5ºC era óptima para producción de CO 2 [0.140 mg CO 2 ·g-1·h-1] y 37.0 ºC para la actividad deshidrogenasa [156.78 µg formazán·g-1·(24h)-1], en condiciones estándares de humedad relativa y pH; y se estableció como pH óptimo aquel cercano a la neutralidad (7.8) [0.055 mg CO 2 ·g-1·h-1, 171.19 µg formazán·g-1·(24h)-1], en condiciones estándares de humedad relativa y temperatura. Palabras clave: Actividad microbiana, producción de CO 2 , actividad deshidrogenasa, humedad, temperatura, pH AbstractThe aim of this study was to evaluate the influence of three physical-chemical parameters on microbial activity of farm soils under controlled laboratory conditions (18% humidity, 27.5 ºC and pH 7.8). Microbial activities were quantified by carbon dioxide production and dehydrogenase activity. Three different essays for 4 moisture percentages (v/w): 5.0%, 10.0%, 15.0% and 18.0%, 4 temperatures: 8.0 °C, 21.0 ºC, 27.5 ºC and 37.0 ºC, and 4 pH values: 4.0, 6.1, 7.8 and 8.2 were evaluated. A Completely Randomized Design (CRD) was used for each essay consisting of four treatments and four replicates per treatment. The highest values on microbial activity [0.097 mg CO 2 ·g-1·h-1 and 173.09 µg formazán·g-1·(24h)-1] were obtained at 18% humidity. It was found out that a temperature of 27.5 ºC was optimum for carbon dioxide production [0.140 mg CO 2 ·g-1·h-1], and 37.0 ºC for dehydrogenase activity [156.78 µg formazán·g-1·(24h)-1]. A near to neutral pH (7.8) was established as optimum [0.055 mg CO 2 ·g-1·h-1and 171.19 µg formazán·g-1·(24h)-1]. Key words: Microbial activity, carbon dioxide production, dehydrogenase activity humidity, temperature, pH value IntroducciónExisten diversos parámetros considerados clave para determinar la calidad del suelo, aquellos de naturaleza física y físico-química (estabilidad de agregados, pH, conductividad eléctrica), química (parámetros nutricionales y fracciones de carbono), como del tipo microbiológico y bioquímico (carbono de biomasa microbiana, respiración microbiana o diversas actividades enzimáticas). El componente microbiológico puede servir como indicador del estado general del suelo, pues una buena actividad microbiana en suelo es reflejo de condiciones físi...

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Production and Persistence of Soil Enzymes With Repeated Addition of Organic Residues

Cited by 261 publications

References 0 publications

Treatment performance and microorganism community structure of integrated vertical-flow constructed wetland plots for domestic wastewater

Treatment performance and microorganism community structure of integrated vertical-flow constructed wetland plots for domestic wastewater

Agronomic Evaluation of Certified Organic Wheat (Triticum aestivum L.)

Efecto De La Humedad, Temperatura Y Ph Del Suelo en La Actividad Microbiana a Nivel De Laboratorio

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