Straw return of maize and soybean enhances soil biological nitrogen fixation by altering the N-cycling microbial community

Duan, Fuyuan; Peng, Peng; Yang, Kepan; Shu, Yinghua; Wang, Jianwu

doi:10.1016/j.apsoil.2023.105094

Cited by 11 publications

(3 citation statements)

References 47 publications

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“…When compared with a no-straw-return treatment, straw return increased Gm + -bacterial and Gm --bacterial levels [18]. Several studies also reported that SR enhanced nitrite reductase (nirS and nirK) copy numbers [96,97]. Indeed, soil nutrient cycling processes are very complex, and the associated microbes are diversified and complicated.…”

Section: Sr and Associated Challengesmentioning

confidence: 99%

The Fate and Challenges of the Main Nutrients in Returned Straw: A Basic Review

Li,

Jiao

et al. 2024

Agronomy

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Due to containing an abundance of essential nutrients, straw has significant potential to mitigate carbon (C), nitrogen (N), phosphorus (P), and potassium (K) deficits in soil. However, a lack of comprehensive and systematic reviews on C, N, P, and K release and conversion from straw and on the impact of available nutrients in soils supplemented using straw-returning (SR) practices is noticeable in the literature. Therefore, we investigated straw decomposition, its nutrient release characteristics, and the subsequent fate of nutrients in soils. At early stages, straw decomposes rapidly and then gradually slows down at later stages. Nutrient release rates are generally in the K > P > C > N order. Nutrient fate encompasses fractions mineralized to inorganic nutrients, portions which supplement soil organic matter (SOM) pools, and other portions which are lost via leaching and gas volatilization. In future research, efforts should be made to quantitatively track straw nutrient release and fate and also examine the potential impact of coordinated supply-and-demand interactions between straw nutrients and plants. This review will provide a more systematic understanding of SR’s effectiveness in agriculture.

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Section: Sr and Associated Challengesmentioning

confidence: 99%

The Fate and Challenges of the Main Nutrients in Returned Straw: A Basic Review

Li,

Jiao

et al. 2024

Agronomy

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“…In recent years, the impact of combining different types of materials for returning to the field in soil carbon pools has attracted widespread attention from scholars. To increase the effectiveness of exogenous carbon decomposition, diversified methods of return have gradually emerged [8,9]. For instance, the incorporation of a mixture of soybean and corn straw into the soil, returning composted straw to the field, deep-burying of ground-up straw, and so on [8,10].…”

Section: Introductionmentioning

confidence: 99%

“…To increase the effectiveness of exogenous carbon decomposition, diversified methods of return have gradually emerged [8,9]. For instance, the incorporation of a mixture of soybean and corn straw into the soil, returning composted straw to the field, deep-burying of ground-up straw, and so on [8,10]. In agroforestry systems, mixed litter in soil ecosystems largely determines the dynamic pattern of soil carbon and nitrogen, and different proportions of mixtures may lead to differences in the selection and supply of soil carbon and nitrogen.…”

Section: Introductionmentioning

confidence: 99%

The Impact of Combining Robinia pseudoacacia Leaves and Corn Straw on Soil Carbon Content and Corn Yield in Loess Plateau

Liu,

Zhang

et al. 2024

Agronomy

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In the agroforestry system, the organic matter in the farmland and natural ecosystem enters the farmland soil in a mixed form to improve soil fertility and carbon pool quality. However, it is unclear how soil microbial carbon-degrading enzyme activity responds to carbon dynamics in this process. Therefore, we took farmland in the Loess Plateau as the research object, combining the application of corn straw and Robinia pseudoacacia leaves in a mass ratio of 4:0, 3:1, 2:2, 1:3, and 0:4 for returning to the field. We measured corn grain yield, carbon emission, organic carbon pool component content, and carbon-degrading enzyme activity of the farmland. The results showed that combining corn straw and Robinia pseudoacacia leaves had a significant impact on soil organic carbon components (readily oxidizable organic carbon and recalcitrant organic carbon), carbon-degrading enzymes (polyphenol oxidase, peroxidase, and cellobiohydrolase), and cumulative carbon emissions. The trend of different indicators in different treatments during the corn growth period was similar. We found that soil carbon emissions were closely related to ROC and soil oxidase activity, while soil carbon content was closely related to soil hydrolase activity. Compared to not returning straw to the field, the corn straw and Robinia pseudoacacia leaves returned to the field in a mass ratio of 1:3(Y1C3) can increase corn grain yield by 32.04%. The Y1C3 treatment has the highest soil carbon content and the lowest crop carbon emission efficiency. Soil water content plays a crucial role in the process of carbon pool transformation driven by soil carbon-degrading enzymes. In conclusion, soil carbon dynamics are closely related to the activity of soil carbon-degrading enzymes. Combining the application of corn straw and Robinia pseudoacacia leaves may be a more suitable farming measure for fragile habitats in the Loess Plateau than other solutions.

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Impact of combined organic amendments and chemical fertilizers on soil microbial limitations, soil quality, and soybean yield

Wu,

Chen,

et al. 2024

Plant Soil

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Straw return of maize and soybean enhances soil biological nitrogen fixation by altering the N-cycling microbial community

Cited by 11 publications

References 47 publications

The Fate and Challenges of the Main Nutrients in Returned Straw: A Basic Review

The Fate and Challenges of the Main Nutrients in Returned Straw: A Basic Review

The Impact of Combining Robinia pseudoacacia Leaves and Corn Straw on Soil Carbon Content and Corn Yield in Loess Plateau

Impact of combined organic amendments and chemical fertilizers on soil microbial limitations, soil quality, and soybean yield

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