Impact of Drip Irrigation and Nitrogen Fertilization on Soil Microbial Diversity of Spring Maize

Sarula, Sarula; Heng-shan, Yang; Zhang, Ruifu; Li, Yuanyuan; Meng, Fanbin; Ma, Jun

doi:10.3390/plants11233206

Cited by 7 publications

(5 citation statements)

References 49 publications

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“…The experimental results in this study demonstrated that the increase in water content (WFPS) significantly reduced the fungal Chao1 and Shannon indices (p < 0.01; Table 3), which was consistent with the results observed by McHugh et al [72]. Several precipitation or water management techniques have distinct effects on the fungal alpha diversity index [72,73]. This is because water quality and water management techniques may have an impact on the responses of diverse microbial communities to soil water availability [74].…”

Section: Soil Microbial Communitysupporting

confidence: 91%

Effects of Biochar and Organic Additives on CO2 Emissions and the Microbial Community at Two Water Saturations in Saline–Alkaline Soil

Zhang

Jiang

et al. 2023

Agronomy

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The nutrient-limiting conditions in saline–alkali soil as well as the salinity and alkalinity stress are successfully alleviated by water management measures and the addition of organic matter. However, the impacts of these two strategies on the microbe-driven CO2 emissions in saline–alkaline soils are not yet clear. Therefore, a 150-day incubation experiment was conducted in this study to evaluate the short-term effects of water regulation and the addition of organic matter with different characteristics on CO2 emissions and microbial community characteristics in saline–alkali soils under non-flooding conditions. This study was conducted at two water saturations, i.e., 50% WFPS and 80% WFPS. In addition, five organic matter treatments were conducted: CK: control; N: urea; SN: Straw + urea; SNH: Straw + urea + microbial agent; and SNB: Straw + urea + biochar. The results demonstrated that compared with 50% WFPS, 80% WFPS significantly increased cumulative CO2 emission by 27.66%, but significantly decreased salt content and the fungal Chao1 and Shannon indices. The application of the biochar and microbial agent decreased the cumulative CO2 emissions of the SN treatment by 27.39% and 14.92%, respectively. When sufficient carbon supply is available, the decrease in fungal diversity may reduce CO2 emission. The findings demonstrated that SNH and SNB at 80% WFPS might decrease CO2 emissions under straw carbon intake as well as the loss of labile organic carbon (LOC). Additionally, these treatments can alleviate microbial stress caused by salinity, which has a favorable impact on enhancing carbon storage in salinity-affected dryland soils.

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Section: Soil Microbial Communitysupporting

confidence: 91%

Effects of Biochar and Organic Additives on CO2 Emissions and the Microbial Community at Two Water Saturations in Saline–Alkaline Soil

Zhang

Jiang

et al. 2023

Agronomy

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“…The application of the maximum nitrogen dose reduced the diversity (Figure 1) while increasing the distance between the bacterial communities of the different treatments (Figure 2). Previous studies have also reported the negative influence of nitrogen supply on the diversity of the soil microbial community [53,78,79]. Indeed, the application of nitrogen fertilizers composed of ammonia acidifies the soil [80,81], and the intensity of this acidity increases with the dose of nitrogen applied [82].…”

Section: Influences Of Various Water Regimes and Fertilization Modes ...mentioning

confidence: 97%

“…Other factors, including soil fertilization, also influence the response of the soil microbial community to drought. It is currently known that an optimal application of N fertilizer mitigates the impact of drought on the microbial community of the soil [52,53]; meanwhile, as its excessive application increases in the long term, so does the sensitivity of the microbial community to various environmental stresses [54]. Other studies have reported a significant improvement in microbial biomass and an alteration in the composition of the soil microbial community under suitable N fertilization in drought conditions [55,56].…”

Section: Introductionmentioning

confidence: 99%

Soil Bacterial Community and Greenhouse Gas Emissions as Responded to the Coupled Application of Nitrogen Fertilizer and Microbial Decomposing Inoculants in Wheat (Triticum aestivum L.) Seedling Stage under Different Water Regimes

Kpalari,

Mounkaila Hamani,

Hui

et al. 2023

Agronomy

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The soil microbial community is critically important in plant nutrition and health. However, this community is extremely sensitive to various environmental conditions. A pot experiment was conducted during the wheat seedling stage to better understand the influences of the coupled application of nitrogen (N) and microbial decomposing inoculants (MDI) on the soil bacteria community under different water regimes. There were two levels of water and six levels of fertilization. The results reveal that water stress increased the relative abundance of Acidobacteria and decreased that of Firmicutes and Proteobacteria. The application of 250 kg N ha−1 altered the diversity of the bacterial community but increased the relative abundance of nitrifying bacteria. Nitrous oxide (N2O) and carbon dioxide (CO2) emissions were negatively correlated with Myxococcota and Methylomirabilota while positively correlated with Patescibacteria. These two gases were also positively correlated with nitrifying bacteria, and the correlation was more significant under the full irrigation regime. These findings indicate that MDI does not substantially influence the soil bacterial community and its relationship with greenhouse gas emission at the wheat seedling stage and that the abundance of the soil bacterial community would mainly depend on the rational control of the amount of N and water applied.

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“…The application of fertilizer and the growth of corn are conducive to the metabolic activities of soil microorganisms, which in turn act on the growth of maize (Rao et al, 2021). In agro-ecosystems with high nitrogen input, moderately reducing subsequent nitrogen supply should be the priority choice for soil management (Sarula et al, 2022).…”

Section: Soil Nitrogen Metabolic Enzyme Activity and Composition And ...mentioning

confidence: 99%

Growth and yield of maize in response to reduced fertilizer application and its impacts on population dynamics and community biodiversity of insects and soil microbes

Zou,

Li,

Wang

et al. 2024

Front. Plant Sci.

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In the North China Plain, farmers are using excessive amounts of fertilizer for the production of high-yield crop yield, which indirectly causes pollution in agricultural production. To investigate an optimal rate of fertilizer application for summer maize, the fertilizer reduction experiments with 600 kg/ha NPK (N: P2O5: K2O = 28: 8: 10) as normal fertilizer application (NFA), (i.e., 100F), were conducted successively during 2020 and 2021 to study the effects of reduced fertilizer rates, including 90% (540 kg/ha; i.e., 90F), 80% (480 kg/ha; i.e., 80F), 62.5% (375 kg/ha; i.e., 62.5F) and 50% (300 kg/ha; i.e., 50F) of NFA, on the plant growth of maize, the dynamics of key population abundances and community diversity of insects, and the composition and diversity of microbial community and finally to find out the N-metabolic enzymes’ activity in soil. Our findings revealed that the fertilizer reduction rates by 10% - 20% compared to the current 100% NFA, and it has not significantly affected the plant growth of maize, not only plant growth indexes but also foliar contents of nutrients, secondary metabolites, and N-metabolic enzymes’ activity. Further, there was no significant alteration of the key population dynamics of the Asian corn borer (Ostrinia furnacalis) and the community diversity of insects on maize plants. It is interesting to note that the level of N-metabolic enzymes’ activity and microbial community diversity in soil were also not affected. While the fertilizer reduction rate by 50% unequivocally reduced field corn yield compared to 100% NFA, significantly decreased the yield by 17.10%. The optimal fertilizer application was calculated as 547 kg/ha (i.e., 91.17% NFA) based on the simulation analysis of maize yields among the five fertilizer application treatments, and the fertilizer application reduced down to 486 kg/ha (i.e., 81.00% NFA) with a significant reduction of maize yield. These results indicated that reduced the fertilizer application by 8.83% - 19.00% is safe and feasible to mitigate pollution and promote sustainable production of maize crops in the region.

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Impact of Drip Irrigation and Nitrogen Fertilization on Soil Microbial Diversity of Spring Maize

Cited by 7 publications

References 49 publications

Effects of Biochar and Organic Additives on CO2 Emissions and the Microbial Community at Two Water Saturations in Saline–Alkaline Soil

Effects of Biochar and Organic Additives on CO2 Emissions and the Microbial Community at Two Water Saturations in Saline–Alkaline Soil

Soil Bacterial Community and Greenhouse Gas Emissions as Responded to the Coupled Application of Nitrogen Fertilizer and Microbial Decomposing Inoculants in Wheat (Triticum aestivum L.) Seedling Stage under Different Water Regimes

Growth and yield of maize in response to reduced fertilizer application and its impacts on population dynamics and community biodiversity of insects and soil microbes

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