Long-Term Wheat-Soybean Rotation and the Effect of Straw Retention on the Soil Nutrition Content and Bacterial Community

De-jie, Kong; Ren, Chao; Yang, Gaihe; Liu, Nana; Sun, Jian; Zhu, Jiang; Ren, Guangxin; Feng, Yongzhong

doi:10.3390/agronomy12092126

Cited by 9 publications

(2 citation statements)

References 72 publications

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“…When fungi decompose the same substrate, the soft rot fungi of Ascomycota can only degrade cellulose, while the white and brown rot fungi of Basidiomycota can degrade cellulose and lignin; thus, the relative abundance of Basidiomycota is higher in the later stages of decay [67]. In studies on fungi involved in the decomposition of litter and straw returning, the relative abundance of Ascomycota gradually decreased with the decomposition of organic matter, and the abundance of Basidiomycota increased, which is consistent with the present study [68,69]. In contrast, Ascomycota was found to be dominant in the decomposition of ancient trees in forest land; the proportion of Basidiomycota in the later stage of decay was significantly reduced compared with that in the early and middle stages [66].…”

Section: Effect Of Bamboo Stump Decomposition On Soil Fungal Communit...supporting

confidence: 91%

Structural and Functional Characteristics of Soil Fungal Communities near Decomposing Moso Bamboo Stumps

Liang,

Yu,

Jin

et al. 2023

Forests

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Background and Objectives: Fungi degrade lignin and other fibers, thus playing an essential role in the decomposition of Phyllostachys edulis (Carrière) J.Houz. (Moso bamboo) stumps. Herein, we characterized key soil fungal communities near different levels of decomposing Moso bamboo stumps (mildly, moderately, and heavily decayed). Materials and Methods: High-throughput sequencing technology was used to analyze the soil fungal communities inside and outside of mild, moderate, and heavy decomposing Moso bamboo stumps. Results: We found nine phyla, 30 classes, 77 orders, 149 families, and 247 genera of soil fungi near the bamboo stumps. Soil fungi OTUs and diversity and richness indices were lower outside than inside the stumps, and decreased with increasing degrees of decay. Inside the bamboo stumps, Soil fungi OTUs and diversity and richness indices were the highest and lowest in moderate and heavy decay bamboo stumps, respectively. Ascomycota dominated inside (from 81% to 46%) and outside (from 69% to 49%) the stumps, and their relative abundance gradually decreased with decomposition, whereas that of Basidiomycota increased outside the stumps (from 17% to 49%). Two-way ANOVA showed that the interaction between the two factors of occurring inside and outside the bamboo stumps and the degree of decay, significantly affected Chytridiomycota and Penicillium (p < 0.001) and significantly affected Mucoromycota (p < 0.05). The abundance of different genera was significantly correlated with saprotrophic functional groups. Conclusion: Changes in the structure and functional groups of soil fungal communities may play an important role during different levels of decomposition of Moso bamboo stumps. This study provides a scientific basis for screening functional fungal strains that promote the decomposition of Moso bamboo stumps.

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Section: Effect Of Bamboo Stump Decomposition On Soil Fungal Communit...supporting

confidence: 91%

Structural and Functional Characteristics of Soil Fungal Communities near Decomposing Moso Bamboo Stumps

Liang,

Yu,

Jin

et al. 2023

Forests

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“…A total of 75-80% of the soil organic nitrogen (SON) was converted into plant-absorbable inorganic N (NH 4 + -N and NO 3 − -N) through microbial action, known as soil N mineralization, re ecting, to some extent, the potential N supply capacity of the soil (Pandey et al, 2010). Similarly, soil organic carbon (SOC) is the main form of soil carbon mineralization through CO 2 exchange with the atmosphere via microbial respiration (Kong, 2020). Both carbon and N mineralization are related to soil substrate, temperature, soil water content, and oxygen (Zhao et al, 2019;.…”

Section: Introductionmentioning

confidence: 99%

Co-culture of rice and crayfish increases the global warming potential-An evidence from soil culture with different water content

Liu,

Zhang,

Hou

et al. 2023

Preprint

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Rice–crayfish co-culture (RC) has been recognized as a comprehensive ecotype mode. Controversial opinions exist regarding the increase or decrease in global warming potential (GWP) by RC compared with rice monoculture (RM) because N2O and CH4 emission are affected by complex external factors including fertilizer, water management, and temperature (e.g., as in the RC system). However, whether soil from the RC field, except for external conditions, has different characteristics (i.e., organic N and carbon mineralization) that affect N2O and CH4 emission needs clarification. This study aimed to investigate the characteristics of soil organic carbon (SOC) and soil organic nitrogen (SON) mineralization and greenhouse gas emission in soils from RC (RC8 and RC15, indicating 8 and 15 years, respectively) and RM fields using the indoor biological culture method with different water-holding capacity (WHC) levels with a soil moisture content of 30%, 60%, and 90%s. Moreover, the dynamic model of SOC/SON mineralization was fitted to provide data support for fertilization and low-carbon management. RC soil had a higher rate of SOC/SON mineralization that mainly occurred in the first 7 days, and the mineralization rate increased first and then decreased with increasing WHC. The SOC mineralization rate constant (k) showed the trend of RC15 > RC8 > RM at 60% WHC, while the soil from these three fields had similar k values at 30% and 90% WHCs. Further, the half-revolution period of SOC (T1/2) was between 3.395 and 3.665, unlike the k value. The SON mineralization rate constant (k0) showed significant differences, with RC8 > RC15 > RM at 90% WHC, while no significant difference was found at 30% and 60% WHC and the k0 value varied from 0.103 to 0.120 under different WHC levels. RC8 and RC15 soils showed significantly higher soil net ammonification rate (0.5–3.04 g kg− 1 d− 1), net nitrification rate (0.04–0.09 g kg− 1 d− 1), and SON net mineralization rate (0.55–3.13 g kg− 1 d− 1) by more than 67%, 33%, and 65% compared with RM soil. At 30%, 60%, and 90% WHC, cumulative N2O emissions increased by 19–34%, 12–33%, and 17–32% in RC soil than in RM soil, respectively, and RC15 soil showed the highest emission. The cumulative CH4 emission significantly decreased by 23.1% and 11.5% at 30% WHC in RC8 and RC15 soils, respectively, than that of in RM soil. RC soil showed higher soil mineral N content and 31–59% higher GWP compared with those in RM soil, indicating that RC had higher mineral N support, while also having higher carbon emission risk. Therefore, N fertilizer can be reduced to a certain extent for long-time RC fields, and other effective low-carbon measures (e.g., enhanced-efficiency fertilizer, deep fertilization, and straw management) can be adopted to reduce GWP.

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Short‐Term Benefits of Tillage and Agronomic Biofortification for Soybean–Wheat Cropping in Central India

Nargund,

Verma,

Ramesh

et al. 2024

CLEAN Soil Air Water

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In a changing climate, conservation tillage and agronomic biofortification are essential for enhancing crop yield, nutritional security, carbon stocks, and soil quality. Consequently, a field study was conducted in central India to assess the short‐term (4 years) effects of crop establishment techniques (CETs) and agronomic biofortification methods (ABMs) on soil health indicators, grain yield, and quality in the soybean–wheat cropping system. The experiment followed a split‐plot design with two CETs in the main plots (permanent broad bed furrow, PBBF, and conventional tillage, CT) and eight ABMs, each with three replications. The results indicated that PBBF and ABMs (seed inoculation with the microbial strains MDSR 14 + MDSR 34, and soil and foliar application of Zn+Fe) improved soil carbon stock (by 49.6% and 52.4%), available nitrogen, phosphorus, potassium, available Zn (by 30.0%), and Fe (by 21.9%) after the fourth year of the study. Similarly, PBBF and microbial inoculation increased soil enzyme activities (dehydrogenase, acid phosphatase, and β‐glucosidase), substrate‐induced respiration, and microbial biomass carbon content. As a result, a higher soybean equivalent yield (5.59% higher in PBBF and 14.2% higher with foliar spray of Zn+Fe) and seed quality attributes (crude protein yield, grain Zn, and Fe) were observed in PBBF and the foliar spray of Zn and Fe treatments compared to CT and control, respectively. Overall, adopting the short‐term PBBF system, microbial inoculation, and soil and foliar application of Zn and Fe improved rhizosphere biochemical properties, yield, and seed quality in the soybean–wheat system.

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Long-Term Wheat-Soybean Rotation and the Effect of Straw Retention on the Soil Nutrition Content and Bacterial Community

Cited by 9 publications

References 72 publications

Structural and Functional Characteristics of Soil Fungal Communities near Decomposing Moso Bamboo Stumps

Structural and Functional Characteristics of Soil Fungal Communities near Decomposing Moso Bamboo Stumps

Co-culture of rice and crayfish increases the global warming potential-An evidence from soil culture with different water content

Short‐Term Benefits of Tillage and Agronomic Biofortification for Soybean–Wheat Cropping in Central India

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