The impacts of organic amendments: Do they confer stability against drought on the soil microbial community?

Bastida, Felipe; Torres, I.F.; Hernández, Teresa; Garcı́a, Carlos

doi:10.1016/j.soilbio.2017.06.012

Cited by 70 publications

(32 citation statements)

References 76 publications

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“…Decreased precipitation suppressed microbial biomass and changed the composition of the microbial community in the winter and growing seasons, which was consistent with previous studies (Bastida et al, ). Decreased precipitation could have directly decreased soil water availability, which would inhibit the growth of soil microbes, thus reducing microbial biomass and changing microbial community composition (Bastida et al, ; Canarini et al, ). Decreased precipitation can also indirectly affect microbial biomass and community composition by inhibiting plant nutrient flow and decreasing substrate availability (Canarini et al, ).…”

Section: Discussionsupporting

confidence: 92%

“…In addition, previous reports have indicated that N addition and decreased precipitation can alter the diversity and composition of the soil microbial community (Bastida et al, 2017;Zeng et al, 2016). Nitrogen addition might directly affect microbial communities by altering soil N availability and indirectly affect them by altering soil physiochemical properties and the C allocation strategy of plants (Ramirez, Craine, & Fierer, 2012).…”

mentioning

confidence: 97%

“…Furthermore, decreased precipitation might alter C allocation by changing the root:shoot ratio, thus potentially increasing root respiration (Zhou et al, 2016). In general, decreased precipitation might strongly stimulate (Bastida, Torres, Hernández, & García, 2017), considerably inhibit (Janssens et al, 2010;Liu et al, 2016) or have no effect (Zhou et al, 2016) on CO 2 efflux from the soil, which is similar to the effects of N deposition. Decreased precipitation could also markedly change CH 4 efflux by increasing the rate of diffusion of soil gas and oxygen concentration and by inhibiting the activity of methanogens while stimulating methanotrophs, ultimately increasing the rate of methane absorption.…”

mentioning

confidence: 99%

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Effects of artificial nitrogen addition and reduction in precipitation on soil CO₂ and CH₄ effluxes and composition of the microbial biomass in a temperate forest

Yan

Xing

Lü

et al. 2019

European J Soil Science

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To understand the effects of artificially increased atmospheric nitrogen (N) and decreased precipitation on the soil microbial community and soil CO2 and CH4 efflux, a two‐factorial field experiment was carried out with the following treatments: (a) control, (b) N addition (+50 kg N ha−1 year−1), (c) decreased precipitation (−30% of throughfall) and (d) combined N addition and decreased precipitation (+50 kg N ha−1 year−1, −30% of throughfall). The N addition and decreased precipitation treatments had a positive effect on mean CO2 efflux (2.61 μmol CO2 m−2 s−1 for control, 4.26 μmol CO2 m−2 s−1 for N addition, 3.62 μmol CO2 m−2 s−1 for reduction in precipitation) and mean rates of CH4 uptake (0.00088 μmol CH4 m−2 s−1 for control, 0.00154 μmol CH4 m−2 s−1 for N addition, 0.00151 μmol m−2 s−1 for reduction in precipitation) during the growing season. The combined N addition and reduction in precipitation also led to increased soil CO2 efflux and CH4 uptake, but the combined response was weaker than the response to single variable treatments (3.10 μmol CO2 m−2 s−1 and 0.00130 μmol CH4 m−2 s−1 interaction), indicating antagonistic effects of the combined treatment. At the seasonal scale, changes in soil CO2 and CH4 efflux were complex, especially in the spring freezing and thawing period, during which pulses of CO2 efflux and CH4 uptake occurred. Decreased precipitation altered the composition of the bacterial community in the winter and growing seasons, and composition of the microbial community also showed a seasonal change. However, changes in microbial community structure under N addition, precipitation reduction and their interaction might be important factors leading to an increase or decrease in soil carbon efflux. Highlights How global changes (N addition and decreased precipitation) affect soil C flux. Seasonal effects of global changes on soil C flux were analysed quantitatively. Decreased precipitation and N‐addition increased soil CO2 flux and decreased soil CH4 flux. Global changes regulate soil C flux by altering soil water, microbial and nutrient status.

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Section: Discussionsupporting

confidence: 92%

mentioning

confidence: 97%

mentioning

confidence: 99%

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Effects of artificial nitrogen addition and reduction in precipitation on soil CO₂ and CH₄ effluxes and composition of the microbial biomass in a temperate forest

Yan

Xing

Lü

et al. 2019

European J Soil Science

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Section: Soil Enzyme Activity Under Different Stress Conditions: Herbsupporting

confidence: 92%

“…The urease activity showed the same trends in all incubation conditions, with an increase from 0 to 60 days (Figure 4), which is consistent with the findings of many authors [46][47][48][49][50]. In both compacted and not compacted soils without isoproturon, the addition of compost increased the urease activity (p < 0.05), as observed in several works [49][50][51][52] (Figure 4 and Table 3). Organic amendments are known to stimulate the microbial activity and to have a high level of substrates capable of activating enzyme synthesis [4,51], and positive correlations between soil organic matter content and urease activity were frequently observed [53].…”

Section: Soil Enzyme Activity Under Different Stress Conditions: Herbsupporting

confidence: 90%

Effect of Multiple Stresses, Organic Amendment and Compaction, on the Fate and Impact of Isoproturon in Soil

et al. 2020

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Organic matter decline and compaction are two major processes of soil degradation. Organic amendment is a current practice to compensate the loss of organic matter, which could in addition contribute to increase soil aggregate stability and limit compaction. Therefore, the objective of this work was to study the effect of multiple physico-chemical stresses, organic amendment (compost of sewage sludge and green waste) addition and soil compaction, on the fate and impact (measured through the urease enzyme activity) of isoproturon. Compost addition and compaction did not significantly affect the fate and impact of isoproturon. The lack of effect of compost can be due to the delay between soil sampling and soil amendment. Compaction had no effect probably because the porosity reduction does not affect the habitable pore space accessible to degrading microorganisms. Nevertheless, isoproturon significantly increased the urease enzyme activity in compacted and not compacted unamended soils contrary to the amended ones. It seems that the organic amendment could act as a buffer with regards to the impact of isoproturon. The results obtained in this work suggest that, in general, the fate and impact of isoproturon in soils will not change following compaction and/or organic amendment addition, neither the corresponding risks for the environment.

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Effects of different rice straw on soil microbial community structure

et al. 2021

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Straw incorporation is an important measure to improve soil fertility and soil acidification. However, fresh straw that is returned to the field cannot be decomposed in a short time. Accumulation of undecomposed straw in the soil changes humus composition and the C structure. An experiment was designed to evaluate the effects of decomposed straw on soil fertility and microbial communities. Soil samples were collected from a rice-rice-tobacco region in southwestern China (The rice was Hongyou No 7, which was a new variety applied in 2007 by the Honghe State Agricultural Science Institute,Yunnan province, China). (The tobacco was K326. K326 was an excellent variety which Imported from Northup King Seed Company (USA) to China in 1985). The soil was mixed with different kinds of straw and incubated in a greenhouse. The responses of the soil fertility, microbial diversity, and microbial population were analyzed after 0, 16, and 33 d of incubation. Overall, we found that (a) the soil organic matter and the organic C content of each humus component were significantly increased after 33 d of incubation. In addition, the condensation and oxidation degrees of the soil C structure were decreased. (b) Community dynamics changes in the soil were accompanied by changes of incubation times. (c) Decomposed straw incorporation could stimulate potentially beneficial microbial populations. (d) Decomposed straw incorporation with microbial agent application could be the best practice for the application of biofertilizers.

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The impacts of organic amendments: Do they confer stability against drought on the soil microbial community?

Cited by 70 publications

References 76 publications

Effects of artificial nitrogen addition and reduction in precipitation on soil CO₂ and CH₄ effluxes and composition of the microbial biomass in a temperate forest

Effects of artificial nitrogen addition and reduction in precipitation on soil CO₂ and CH₄ effluxes and composition of the microbial biomass in a temperate forest

Effect of Multiple Stresses, Organic Amendment and Compaction, on the Fate and Impact of Isoproturon in Soil

Effects of different rice straw on soil microbial community structure

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The impacts of organic amendments: Do they confer stability against drought on the soil microbial community?

Cited by 70 publications

References 76 publications

Effects of artificial nitrogen addition and reduction in precipitation on soil CO2 and CH4 effluxes and composition of the microbial biomass in a temperate forest

Effects of artificial nitrogen addition and reduction in precipitation on soil CO2 and CH4 effluxes and composition of the microbial biomass in a temperate forest

Effect of Multiple Stresses, Organic Amendment and Compaction, on the Fate and Impact of Isoproturon in Soil

Effects of different rice straw on soil microbial community structure

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Effects of artificial nitrogen addition and reduction in precipitation on soil CO₂ and CH₄ effluxes and composition of the microbial biomass in a temperate forest

Effects of artificial nitrogen addition and reduction in precipitation on soil CO₂ and CH₄ effluxes and composition of the microbial biomass in a temperate forest