Soil microbial biomass and activity under different agricultural management systems in a semiarid Mediterranean agroecosystem

García‐Orenes, Fuensanta; Guerrero, C.; Roldán, A.; Mataix-Solera, Jorge; Cerdà, Artemi; Campoy, M.; Zornoza, Raúl; Bárcenas, G. M.; Caravaca, F.

doi:10.1016/j.still.2010.05.005

Cited by 219 publications

(143 citation statements)

References 31 publications

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“…The microbial community in the fallow soil had all the enzymes necessary for the immediate degradation of the soluble compounds in the litter. Similar results were published by Garcia Orenes et al (2010) and Nautiyal et al (2010) for a semi-arid ecosystem. The higher value of H from the soil under RT compared with CT confirmed the adverse effect of tillage on diversity.…”

Section: Discussionsupporting

confidence: 90%

Impact of different cropping conditions and tillage practices on the soil fungal abundance of a Phaeozem luvico

Gómez

Aulicino²,

Mónaco

et al. 2015

Span. j. agric. res.

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<p>Fungal diversity seems to be a good indicator of ecosystem disturbance and functioning. The purpose of this work was to quantify the fungal population as a sensitive indicator of the changes caused by stubble placement in two tillage systems: reduced tillage (RT) and conventional tillage (CT) with and without cropping. To this end, we determined the effect of soil disturbances such as N fertilization, tillage practice, and cropped area on the soil fungal communities of a Phaeozem luvico of the El Salado river basin (Argentina). Soil samples (at 0-10 cm depth) were collected from a field cultivated with wheat at post-harvest, before sowing and at tillering. The relative abundance of individuals of the fungal population was studied on Nash Snyder and Oxgall agar media after different treatments and assessed as colony forming units (CFU/gof soil). The diversity of the fungal population was studied by Shannon´s index (H). The tillage system showed a marked effect only at post-harvest and the number of propagules was highest under RT for both culture media. The largest values of H were found only at post-harvest when Oxgall agar was used. A significant decrease in the values of H was observed when CT and high fertilization was applied in the wheat cropped area. The relative abundance of individuals of the fungal population was different in soils under the different tillage practices.</p>

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Section: Discussionsupporting

confidence: 90%

Impact of different cropping conditions and tillage practices on the soil fungal abundance of a Phaeozem luvico

Gómez

Aulicino²,

Mónaco

et al. 2015

Span. j. agric. res.

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“…Specific indicators of microbial activity, such as variables relating to nutrient cycles (nitrogen, carbon and phosphorus) and enzymatic activities (urease, β-glucosidase and phosphatase), have been proposed to evaluate soil status (Trasar-Cepeda et al, 1998). Moreover, general indicators of microbial activity have been extensively used in forest and agricultural soil status characterisation (Armas et al, 2007;García-Orenes et al, 2010;Fterich et al, 2014;Ferreira et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Soil microbiological properties and enzymatic activities of long-term post-fire recovery in dry and semiarid Aleppo pine (<i>Pinus halepensis</i> M.) forest stands

et al. 2015

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Abstract. Wildfires affecting forest ecosystems and post-fire silvicultural treatments may cause considerable changes in soil properties. The capacity of different microbial groups to recolonise soil after disturbances is crucial for proper soil functioning. The aim of this work was to investigate some microbial soil properties and enzyme activities in semiarid and dry Aleppo pine (Pinus halepensis M.) forest stands. Different plots affected by a wildfire event 17 years ago without or with post-fire silvicultural treatments 5 years after the fire event were selected. A mature Aleppo pine stand, unaffected by wildfire and not thinned was used as a control. Physicochemical soil properties (soil texture, pH, carbonates, organic matter, electrical conductivity, total N and P), soil enzymes (urease, phosphatase, β-glucosidase and dehydrogenase activities), soil respiration and soil microbial biomass carbon were analysed in the selected forests areas and plots. The main finding was that long time after this fire event produces no differences in the microbiological soil properties and enzyme activities of soil after comparing burned and thinned, burned and not thinned, and mature plots. Moreover, significant site variation was generally seen in soil enzyme activities and microbiological parameters. We conclude that total vegetation recovery normalises post-fire soil microbial parameters, and that wildfire and post-fire silvicultural treatments are not significant factors affecting soil properties after 17 years.

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“…Hati et al (2006) emphasized its influence on the retention and movement of water in the soil, whereas Aparicio and Costa (2007) reported a significant and positive correlation of SOC with hydraulic conductivity (r = 0.6; 0.001 < p < 0.05) and a negative one with the δ b of the soil (r = −0.6; 0.001 < p < 0.05). There is a strong relationship between soil microbiological activity, organic matter and the structural stability of the soil (García-Orenes et al, 2010). Soil aggregate formation is influenced by biotic and abiotic factors, and the SOC content plays an important role in the stabilization of aggregates and the reduction of the soil losses (Cerdà, 2000).…”

Section: Introductionmentioning

confidence: 99%

Soil physical quality changes under different management systems after 10 years in the Argentine humid pampa

Costa¹,

Aparicio²,

Cerdà³

2015

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Abstract. South American countries with the highest surface of land under no-tillage (NT) management are Brazil, Argentina and Chile. In Argentina, 78.5 % of the agricultural land is cropped under NT management. Several experiments have confirmed the improvements in soil aggregation and infiltration achieved by NT management in dry-land farming areas associated with increases of bulk density (δ b ) under NT management. An increase in bulk density implies a reduction of the macro and mesoporosity that is in contradiction with the increased infiltration that occurs at macro and mesopores. We hypothesize that the increase of bulk density in NT management mainly affects the mesopores. We evaluated the evolution of the soil physical parameters in three management systems in four farmers' fields. We found that the reduction in total porosity under NT management is mainly a product of a reduction in the percentage of mesopores in the soil. In this work, the results indicate a modification of some soil physical parameters (porosity, near-saturated hydraulic conductivity, soil structure) due to uninterrupted agricultural production, but the management system did not affect the yields of crop.

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Soil microbial biomass and activity under different agricultural management systems in a semiarid Mediterranean agroecosystem

Cited by 219 publications

References 31 publications

Impact of different cropping conditions and tillage practices on the soil fungal abundance of a Phaeozem luvico

Impact of different cropping conditions and tillage practices on the soil fungal abundance of a Phaeozem luvico

Soil microbiological properties and enzymatic activities of long-term post-fire recovery in dry and semiarid Aleppo pine (<i>Pinus halepensis</i> M.) forest stands

Soil physical quality changes under different management systems after 10 years in the Argentine humid pampa

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Soil microbial biomass and activity under different agricultural management systems in a semiarid Mediterranean agroecosystem

Cited by 219 publications

References 31 publications

Impact of different cropping conditions and tillage practices on the soil fungal abundance of a Phaeozem luvico

Impact of different cropping conditions and tillage practices on the soil fungal abundance of a Phaeozem luvico

Soil microbiological properties and enzymatic activities of long-term post-fire recovery in dry and semiarid Aleppo pine (&lt;i&gt;Pinus halepensis&lt;/i&gt; M.) forest stands

Soil physical quality changes under different management systems after 10 years in the Argentine humid pampa

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Soil microbiological properties and enzymatic activities of long-term post-fire recovery in dry and semiarid Aleppo pine (<i>Pinus halepensis</i> M.) forest stands