Effect of organic mulches on soil bacterial communities one year after application

Yang, Yoo-Jeong; Dungan, Robert S.; Ibekwe, A. Mark; Valenzuela-Solano, César; Crohn, David M.; Crowley, David E.

doi:10.1007/s00374-003-0639-9

Cited by 74 publications

(25 citation statements)

References 49 publications

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“…For example, Yang et al [15] et al [7] used numerical diversity indices (i.e., Shannon-Weaver index) based on culture-independent fingerprinting methods to compare microbial diversity of amended and unamended soils. These studies showed that the amendment with manures, yard waste or compost enhances soil bacterial diversity, although other authors have not found any effect on soil microbial diversity when studying similar amendments by using analogous methodologies [11,16].…”

Section: Microbial Populations and Community Compositionmentioning

confidence: 99%

Enhancing Soil Quality and Plant Health Through Suppressive Organic Amendments

Bonilla

Gutiérrez‐Barranquero

Vicente

et al. 2012

Diversity

135

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The practice of adding organic amendments to crop soils is undergoing resurgence as an efficient way to restore soil organic matter content and to improve soil quality. The quantity and quality of the organic matter inputs affect soil physicochemical properties and soil microbiota, influencing different parameters such as microbial biomass and diversity, community structure and microbial activities or functions. The influence of organic amendments on soil quality has also effects on crop production and plant health. The enhancement of soil suppressiveness using organic amendments has been widely described, especially for soil-borne diseases. However, there is great variability in the effectiveness of suppression depending on the nature of the amendment, the crop, the pathogen, and the environmental conditions. Although the effects of organic amendments on soil properties have been widely studied, relationships between these properties and soil suppressiveness are not still well understood. Changes in soil physicochemical parameters may modulate the efficacy of suppression. However, the parameters more frequently associated to disease suppression appear to be related to soil microbiota, such as microbial biomass and activity, the abundance of specific microbial groups and some hydrolytic activities. This review focuses on the effect of organic amendments on soil microbial populations, diversity and activities; their ability to enhance plant health through disease suppression; and which of the parameters affected by the organic amendments are potentially involved in soil suppressiveness

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Section: Microbial Populations and Community Compositionmentioning

confidence: 99%

Enhancing Soil Quality and Plant Health Through Suppressive Organic Amendments

Bonilla

Gutiérrez‐Barranquero

Vicente

et al. 2012

Diversity

135

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“…Based on the matrix obtained from Phoretix 1D analysis, the changes in the microbial community composition (presence or absence) and abundance of bacterial and fungal groups were visualized using nonlinear multidimensional scaling (NMDS) with PRIMER-v6 software (www.primer-e. com) with Bray-Curtis similarity index. Analysis of microbial community diversity by Richness, Shannon-Weaver, and Simpson indexes was also carried out according to Yang et al (2003) and Haegeman et al (2014), respectively.…”

Section: Analysis Of Composition Of Bacterial and Fungal Communitiesmentioning

confidence: 99%

Effects of biochar on copper immobilization and soil microbial communities in a metal-contaminated soil

et al. 2015

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Purpose Copper (Cu) contamination has been increasing in land ecosystems. Biochars (BCs) and arbuscular mycorrhizal fungi (AMF) are known to bind metals, and metallophyte can remove metals from soils. Will BC in combination with AMF contain the Cu uptake by a metallophyte growing in a metalcontaminated soil? The objective of this study was to investigate the effects of BCs on the Cu immobilization and over soil microbial communities in a metal-contaminated soil in the presence of AMF and metallophyte. Materials and methods Two BCs were produced from chicken manure (CMB) and oat hull (OHB). A Cucontaminated sandy soil (338 mg kg −1 ) was incubated with CMB and OHB (0, 1, and 5 % w/w) for 2 weeks. Metallophyte Oenothera picensis was grown in pots (500 mL) containing the incubated soils in a controlled greenhouse for 6 months. A number of analyses were conducted after the harvest. These include plant biomass weight, microbial basal respiration, and dehydrogenase activity (DHA), AMF root colonization, spore number, and glomalin production; changes in fungal and bacterial communities, Cu fractions in soil phases, and Cu uptake in plant tissues. Results and discussion The BCs increased the soil pH, decreased easily exchangeable fraction of Cu, and increased organic matter and residual fraction of Cu. The BCs provided favorable habitat for microorganisms, thereby increasing basal respiration. The CMB increased DHA by ∼62 and ∼574 %, respectively, for the low and high doses. Similarly, the OHB increased soil microbial activity by ∼68 and ∼72 %, respectively, for the low and high doses. AMF root colonization, spore number, and total glomalinrelated soil protein (GRSP) production increased by ∼3, ∼2, and ∼3 times, respectively, in soils treated with 1 % OHB. Despite being a metalophyte, O. picensis could not uptake Cu efficiently. Root and shoot Cu concentrations decreased or changed insignificantly in most BC treatments.Conclusions The results show that the BCs decreased bioavailable Cu, decreased Cu uptake by O. picensis, improved habitat for microorganisms, and enhanced plant growth in Cucontaminated soil. This suggests that biochars may be utilized to remediate Cu-contaminated soils.

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“…It helps to prevent weed growth, reduce evaporation, and increase infiltration of rain water during growing season [5]. Research results have shown that mulch provides numerous benefits to crop production by improving the physical, chemical, and biological soil properties [6].…”

Section: Introductionmentioning

confidence: 99%

Effect of Organic Mulching on Soil Moisture, Yield, and Yield Contributing Components of Sesame (Sesamum indicum L.)

Teame

Tsegay

Abrha

2017

International Journal of Agronomy

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Sesame (Sesamum indicum L.) is one of the chief foreign exchange earning oil crops in Ethiopia. However, its productivity remains low due to lack of appropriate agronomic practices. The aim of this research was to study the effect of organic mulches on sesame productivity and in situ moisture conservation. This experiment was carried out in Humera Agricultural Research Center, Western Tigray, during 2015 growing season. The experimental design was Randomized Complete Block Design with three replications. There were four types of organic mulches; rice straw, sorghum straw, sesame straw, and Sudan grass were compared with control. Sesame, variety Setit-1 was used in the experiment. The organic mulching rate of application was 10 ton ha −1 and this was applied evenly to the soil immediately after germination. Soil water content, phonological characteristics yield, and yield components of sesame were collected. The analyzed results indicated that organic mulching had significant effect on soil moisture content at 0-0.2 m, 0.21-0.4 m, and 0.41-0.6 m in every two-week interval after sowing and grain yield of sesame. Sesame straw conserved highest soil moisture content as compared with respective mulch material. The highest yield (664 kg ha −1 ) was recorded with Sudan grass while the lowest grain yield (190 kg ha −1 ) was recorded with no mulch.

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Effect of organic mulches on soil bacterial communities one year after application

Cited by 74 publications

References 49 publications

Enhancing Soil Quality and Plant Health Through Suppressive Organic Amendments

Enhancing Soil Quality and Plant Health Through Suppressive Organic Amendments

Effects of biochar on copper immobilization and soil microbial communities in a metal-contaminated soil

Effect of Organic Mulching on Soil Moisture, Yield, and Yield Contributing Components of Sesame (Sesamum indicum L.)

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