The effects of silicon fertilizer on denitrification potential and associated genes abundance in paddy soil

Song, Alin; Fan, Fenliang; Yin, Chang; Wen, Shilin; Zhang, Yalei; Fan, Xiaoping; Liang, Yongchao

doi:10.1007/s00374-017-1206-0

Cited by 27 publications

(8 citation statements)

References 58 publications

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“…Soil available Si (step 1): Na-acetate Si extraction (Si NaOAc-HOA) generally presents available and soluble Si that are directly exchangeable with soil solution (Sauer et al 2006;Liang et al, 2015). Thus, Na-acetate extraction (NaOAc-HOA) was broadly adopted in literature for analyzing the potential of Si source addition on available Si in soils (Liang et al, 2015;Song et al, 2017). This system was used to ensure a better assessment of the comparison between our experimental results and those published in literature.…”

Section: Determination Of Different Si Forms In Soilsmentioning

confidence: 99%

Soil bacterial communities interact with silicon fraction transformation and promote rice yield after long-term straw return

Song

Liao

et al. 2021

Soil Ecol. Lett.

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Returning crop straw into the soil is an important practice to balance biogenic and bioavailable silicon (Si) pool in paddy, which is crucial for the healthy growth of rice. However, owing to little knowledge about soil microbial communities responsible for straw degradation, how straw return affects Si bioavailability, its uptake, and rice yield remains elusive. Herein, we investigate the change of soil Si fractions and microbial community in a 39-year-old paddy field amended by a long-term straw return. Results show that rice straw return significantly increased soil bioavailable Si and rice yield from 29.9% to 61.6% and from 14.5% to 23.6%, respectively, when compared to NPK fertilization alone. Straw return significantly altered soil microbial community abundance. Acidobacteria was positively and significantly related to amorphous Si, while Rokubacteria at phylum level, Deltaproteobacteria, and Holophagae at class level was negatively and significantly related to organic matter adsorbed and Fe/Mn-oxide-combined Si in soils. Redundancy analysis of their correlations further demonstrated that Si status significantly explained 12% of soil bacterial community variation. These findings suggest that soil bacteria community and diversity interact with Si mobility by altering its transformation, thus resulting in the balance of various nutrient sources to drive biological Si cycle in agroecosystem.

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Section: Determination Of Different Si Forms In Soilsmentioning

confidence: 99%

Soil bacterial communities interact with silicon fraction transformation and promote rice yield after long-term straw return

Song

Liao

et al. 2021

Soil Ecol. Lett.

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“…2) and prevents them from entering plant shoots. For nutrient uptake, Si application elevates the harvest index and nitrogen use efficiency (Detmann et al 2012;Song et al 2017). More plant-available Si can suppress excessive phosphorus uptake in rice (Ma and Takahashi 1990) but promote phosphorus uptake under phosphorus deficiency stress (Ma et al 2001;Pontigo et al 2015;Kostic et al 2017).…”

Section: Silicon Alleviation Of Abiotic Stressesmentioning

confidence: 99%

Silicon enhancement of estimated plant biomass carbon accumulation under abiotic and biotic stresses. A meta-analysis

Song

Zhang

et al. 2018

Agron. Sustain. Dev.

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Abiotic and biotic stresses are the major factors limiting plant growth worldwide. Plants exposed to abiotic and biotic stresses often cause reduction in plant biomass as well as crop yield, resulting in plant biomass carbon loss. As a beneficial and quasiessential element, silicon accumulation in rhizosphere and plants can alleviate the unfavorable effects of the major forms of abiotic and biotic stress through several resistance mechanisms and thus increases plant biomass accumulation and crop yield. The beneficial effects of silicon on plant growth and crop yield have been widely reviewed over the last years. However, carbon accumulation of silicon-associated plant biomass under abiotic and biotic stresses has not yet been systematically addressed. This review article focuses on both the main mechanisms of silicon-mediated alleviation of abiotic and biotic stresses and their effects on plant biomass carbon accumulation in terrestrial ecosystems. The major points are the following: (1) the recovery of plant biomass via silicon mediation usually exhibits a bell-shaped response curve to abiotic stress severity and an S-shaped response curve to biotic stress severity; (2) although carbon concentration of plant biomass decreases with silicon accumulation, more than 96% of the recovered plant biomass contributes to plant biomass carbon accumulation; (3) silicon-mediated recovery generally increases plant biomass carbon by 35% and crop yield by 24%. In conclusion, silicon can improve plant growth and enhance plant biomass carbon accumulation under abiotic and biotic stresses in terrestrial ecosystems.

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“…Moreover, if a chemical compound is not specific in its inhibition of enzymes in the denitrification process, it can inhibit the reduction of N 2 O to N 2 , which results in an increase of N 2 O emissions.Although, several compounds may have inhibitory effects on denitrification, there are, unlike nitrification inhibitors, no commercial denitrification inhibitors available. Silicates have shown to inhibit denitrification(Song et al, 2017). Silicates are sometimes used as fertilizers in paddy rice fields because silicon is a (non-essential) plant nutrient.…”

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Nitrous oxide emission from agricultural soils

Velthof

Rietra

2018

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2018. Nitrous oxide emission from agricultural soils. Wageningen, Wageningen Environmental Research, Report 2921. 58 pp.; 23 fig.; 19 tab.; 166 ref. Lachgas (N 2 O) is een broeikasgas met op mondiaal niveau een aandeel van 6% in de emissies van broeikasgassen. Bemeste landbouwgronden zijn een belangrijke bron van N 2 O. Er is een literatuurstudie uitgevoerd naar N 2 O-emissie uit landbouwgronden met focus op de emissie uit verschillende typen kunstmest en de mogelijkheden om de emissie uit kunstmest te beperken. De N 2 O-emissie uit kunstmest draagt voor 0,8% bij aan de totale broeikasgasemissie in Nederland. Uit de literatuur volgt dat toediening van kunstmest onder gemiddelde en relatief droge omstandigheden in de bodem leidt tot een beperkt risico op N 2 O-emissie voor zowel grasland als bouwland. Het risico op N 2 O-emissie neemt toe als nitraathoudende kunstmeststoffen, zoals kalkammonsalpeter en urean, onder natte omstandigheden aan grasland (alle grondsoorten) en bouwland (met name klei-en veengrond) worden toegediend. Het toedienen van een ammoniummeststof (eventueel met nitrificatieremmer) of ureum onder natte omstandigheden of het uitstellen van bemesting van de nitraathoudende kunstmest tot drogere omstandigheden zijn mogelijkheden om N 2 O-emissie te beperken. De zogenaamde 4R-strategie om de benutting van nutriënten uit meststoffen te verhogen, kan ook leiden tot een lagere N 2 O-emissie, namelijk N-toediening met het juiste type, juiste hoeveelheid, juiste tijdstip en juiste plaats.Nitrous oxide (N 2 O) is a greenhouse gas contributing to 6% of the global greenhouse effect. Fertilized agricultural soils are a major source of N 2 O. A literature study on N 2 O emission from agricultural soils was carried out focussing on the effect of different types of mineral nitrogen (N) fertilizers and strategies to mitigate N 2 O emission from fertilizers. The N 2 O emission from mineral N fertilizer application contributes to 0.8% of the total greenhouse gas emission in the Netherlands. The study shows that application of mineral N fertilizer under moderate and relatively dry conditions results in a relatively low risk of N 2 O emission from both grassland and arable land. However, during wet conditions, application of nitrate containing mineral fertilizers such as (calcium) ammonium nitrate and urean to grasslands (all soil types) and arable crops on clay and peat soils increases the risk of N 2 O emission. To decrease the risk of N 2 O emission during wet conditions, an ammonium based fertilizer (possibly with a nitrification inhibitor) or urea can be used. Alternatively, the application of nitrate based fertilizer should be postponed until drier periods. The 4R strategy to increase nutrient use efficiency of fertilizers will also reduce N 2 O emission, i.e., N application with the Right type, at the Right rate, at the Right time, and in the Right place.

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The effects of silicon fertilizer on denitrification potential and associated genes abundance in paddy soil

Cited by 27 publications

References 58 publications

Soil bacterial communities interact with silicon fraction transformation and promote rice yield after long-term straw return

Soil bacterial communities interact with silicon fraction transformation and promote rice yield after long-term straw return

Silicon enhancement of estimated plant biomass carbon accumulation under abiotic and biotic stresses. A meta-analysis

Nitrous oxide emission from agricultural soils

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