Towards a mechanistic understanding of microbial and nonmicrobial mediated topsoil organic carbon sequestration efficiency in a rice-wheat cropping system

Huang, Xiaolei; Mei, Yiran; Jia, Zhixin; Li, Tingliang; Yu, Guanghui; Wei, Ran

doi:10.1016/j.apsoil.2021.104259

Cited by 9 publications

(8 citation statements)

References 76 publications

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“…This is supported by the finding that BC and NF inhibit soybean BNF but boost N accumulation. Numerous studies have shown that the application of organic amendment increases the nutrients available in the soil by boosting the soil’s physical and chemical characteristics and fertility [ 32 ] promoting the soil nutrient cycle [ 33 ], and speeding up soil ventilation [ 34 ].…”

Section: Discussionmentioning

confidence: 99%

Biochar and biofertilizer reduced nitrogen input and increased soybean yield in the maize soybean relay strip intercropping system

et al. 2023

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Applying Biochar (BC) or biofertilizers (BF) are potential approaches to reduce the nitrogen input and mitigate soil degradation in the maize soybean relay strip intercropping system (IS). In 2019 and 2020, a two-factor experiment was carried out to examine the effects of BC and BF on soil productivity and yield production in IS. 4 N input levels (8.4, 22.5, 45 kg, and 67.5 kg ha − 1) referred to as N0, N1, N2, and N3 were paired with various organic treatments, including BC (150 kg ha − 1), BF (300 kg ha − 1), and without organic amendments (CK). The results demonstrated that, despite BF decreasing the biomass and N distribution into grains, BF performed better on improved soybean yield (5.2–8.5%) by increasing the accumulation of soybean biomass (7.2 ~ 11.6%) and N (7.7%). Even though BC and BF have a detrimental effect on soybean nitrogen fixation by reducing nodule number and weight, the values of soybean nitrogenase activity and nitrogen fixation potential in BF were higher than those in BC. Additionally, BF performs better at boosting the soil’s nitrogen content and nitrate reductase and urease activity. BF increased the concentration of total N, soil organic matter, Olsen-phosphorus, and alkaline hydrolyzable N in the soil by 13.0, 17.1, 22.0, and 7.4%, respectively, compared to CK. Above all, applying BF combination with N2 (45 kg ha − 1 N) is a feasible strategy to raise crop grain output and keep soil productivity over the long term in IS.

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Section: Discussionmentioning

confidence: 99%

Biochar and biofertilizer reduced nitrogen input and increased soybean yield in the maize soybean relay strip intercropping system

et al. 2023

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“…The Feo content was higher in the fertilized soils than that in the control soil, indicating that fertilization could further enhance the formation of poorly crystalline Fe hydroxides in the rice–wheat rotation system. Long‐term organic fertilization increased the content of stubble, roots, and rhizodeposits in soils, which might accelerate the Fe reduction by stimulating microbial anaerobic respiration (Lovley et al., 1996), and in turn promote the formation of poorly crystalline Fe hydroxides (Huang et al., 2022; Jia et al., 2022). The low molecular weight organic acids induced by organic amendments could increase the availability of Fe minerals and promote the formation of poorly crystalline Fe hydroxides (Yu et al., 2017).…”

Section: Discussionmentioning

confidence: 99%

“…Likewise, Lehmann et al (2005) reported that soil reactive P pools increased with long-term manure amendments while Po fractions were less affected. Furthermore, enhanced P availability in organic substitution treatments might be attributed to the higher organic matter content (Huang et al, 2022), which may in turn hamper the fixation of Pi (Liu et al, 2020;Yang et al, 2019). However, long-term nitrogen fertilization leads to soil acidification (Guo et al, 2010), which can be expected to promote the coprecipitation of P with Fe hydroxides in paddy soils (Nobile et al, 2020;Zhang et al, 2021).…”

Section: Effects Of Nine-year Fertilization On the Availability Of P ...mentioning

confidence: 99%

“…Paddy soils represent the largest anthropogenic wetlands on earth, and rice ( Oryza sativa L.)–wheat ( Triticum aestivum L.) cropping systems in Asia cover approximately 28.8 million hectares (Kögel‐Knabner et al., 2010; Prasad, 2005). Seasonal alternation of drying and wetting conditions may cause the redox cycles of iron (Fe) hydroxides, which are expected to promote the formation of poorly crystalline Fe hydroxides (Ginn et al., 2017; Huang et al., 2022). Meanwhile, Fe hydroxides are regarded as the predominant geochemical sinks of phosphate, and the transformation of Fe hydroxides substantially influences the biogeochemical cycle of phosphorus (P) in acidic soils (Ando et al., 2022; Chacón et al., 2006; Wang et al., 2022).…”

Section: Introductionmentioning

confidence: 99%

“…Long‐term fertilization can substantially influence both the transformation of Fe hydroxides and the availability of soil P (Huang et al., 2022; Liu et al., 2020). Organic amendments not only promote the formation of poorly crystalline Fe hydroxides by stimulating the production of organic acids (Yu et al., 2017) and regulating the Fe redox bacterial communities (Wen et al., 2018) but also prevent the transformation of Fe hydroxides into a more crystalline phase (Huang et al., 2018).…”

Section: Introductionmentioning

confidence: 99%

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Nine‐year organic fertilization enhances poorly crystalline iron hydroxide formation and phosphorus availability in a temperate rice–wheat cropping system

Qin

Han

Jia

et al. 2023

Soil Science Soc of Amer J

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Phosphorus (P) is typically associated with iron (Fe) hydroxides in paddy soils. Our study investigated the impact of different fertilization treatments on the availability of P regulated by Fe redox transformation in a rice (Oryza sativa L.)–wheat (Triticum aestivum L.) cropping system in the mid‐low reaches of the Yangtze River. Five fertilization treatments were examined: control (CK), chemical fertilizer (CF), 35% CF (P) plus pig manure compost (CFM), 100% CF (P) plus straw (CFS), and 35% CF (P) plus pig manure compost and straw (CFMS). Nine‐year rice–wheat rotations increased the oxalate‐extractable poorly crystalline Fe hydroxides (i.e., Feo) by 33%–87% compared with the initial soil, while fertilization further accelerated this process. Compost application increased the proportion of labile P by 75%–108% and decreased the proportion of non‐labile P by 14%–22% compared with the single chemical fertilization treatment. Furthermore, organic fertilization increased the mass proportions of macroaggregates and macroaggregate‐associated labile P. The Feo was positively correlated with the content of labile P but negatively correlated with the proportion of non‐labile P. Moreover, the reductive dissolution of Fe hydroxides was accompanied by the transformation of P from NaOH‐extractable to NaHCO3‐ and H2O‐extractable phases. These results indicate that seasonal alternation of drying and wetting can progressively drive the redox transformation of Fe hydroxides and promote the formation of Feo, thereby affecting the availability of P. Therefore, we suggested that P fertilizer should be reduced in the rice season due to the reduction of Fe hydroxides, particularly in the compost‐amended soils in the temperate rice–wheat cropping system.

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Straw mulching decreased the contribution of Fe-bound organic carbon to soil organic carbon in a banana orchard

Hu,

Li,

Wang

et al. 2024

Applied Soil Ecology

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Towards a mechanistic understanding of microbial and nonmicrobial mediated topsoil organic carbon sequestration efficiency in a rice-wheat cropping system

Cited by 9 publications

References 76 publications

Biochar and biofertilizer reduced nitrogen input and increased soybean yield in the maize soybean relay strip intercropping system

Biochar and biofertilizer reduced nitrogen input and increased soybean yield in the maize soybean relay strip intercropping system

Nine‐year organic fertilization enhances poorly crystalline iron hydroxide formation and phosphorus availability in a temperate rice–wheat cropping system

Straw mulching decreased the contribution of Fe-bound organic carbon to soil organic carbon in a banana orchard

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