Development of aggregates after application of maize residues in the presence of mycorrhizal and non-mycorrhizal pea plants

Pokharel, Arjun K.; Jannoura, Ramia; Heitkamp, Felix; Kleikamp, Bernd; Wachendorf, Christine; Dyckmans, Jens; Ludwig, Bernard; Joergensen, Rainer Georg

doi:10.1016/j.geoderma.2013.03.005

Cited by 8 publications

(2 citation statements)

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“…Enhancing the stability of soil aggregates can effectively reduce soil erosion and compaction [51,52]. Microorganisms, especially fungi, arbuscular Mycorrhizal fungi, and actinomycetes, play a key role in forming stable soil aggregates by binding soil particles with their extracellular polysaccharides [53,54]. Additionally, the decomposition of fresh organic matter under microbial action produces extracellular polysaccharides and lipids, which also contribute to the formation and stability of soil aggregate structure [55].…”

Section: Ameliorating Soil Compaction and Promoting Aggregate Formationmentioning

confidence: 99%

Enhancing Soil Health and Plant Growth through Microbial Fertilizers: Mechanisms, Benefits, and Sustainable Agricultural Practices

Wei,

Xie,

Wan

et al. 2024

Agronomy

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Soil microorganisms play a crucial role in maintaining the structure and function of soil ecosystems. This study aims to explore the effects of microbial fertilizers on improving soil physicochemical properties and promoting plant growth. The results show that the application of microbial fertilizers significantly increases the richness of soil microorganisms, maintains soil microecological balance, and effectively improves the soil environment. Through various secondary metabolites, proteins, and mucilage secreted by the developing plant root system, microbial fertilizers recruit specific fungal microorganisms. These microorganisms, by binding soil particles with their extracellular polysaccharides and entwining them, fix the soil, enhance the stability of soil aggregates, and ameliorate soil compaction. Moreover, after the application of microbial fertilizers, the enriched soil microbial community not only promotes the plant’s absorption and utilization of key elements such as nitrogen (N), phosphorus (P), and potassium (K), thereby increasing fruit yield and quality, but also competes with pathogens and induces systemic resistance in plants, effectively warding off pathogenic invasions. This study highlights the potential and importance of microbial fertilizers in promoting sustainable agricultural development, offering new strategies and perspectives for future agricultural production.

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Section: Ameliorating Soil Compaction and Promoting Aggregate Formationmentioning

confidence: 99%

Enhancing Soil Health and Plant Growth through Microbial Fertilizers: Mechanisms, Benefits, and Sustainable Agricultural Practices

Wei,

Xie,

Wan

et al. 2024

Agronomy

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show abstract

“…Microorganisms influence the formation and stability of soil aggregates. For exampere, the AMF (arbuscular mycorrhizal fungi) cement clay particles by secreting glomalin (a polysaccharide) and immobilize them into aggregates by hyphal twining, which is an important mechanism for the formation and stabilization of soil aggregates [4]. Li Jing [5] studied the effects of high carbon and nitrogen inputs on the organic carbon and microbial characteristics of soil aggregates in agroecosystems where large aggregates (0.25-2 mm) are the most active sites for microbial mineralization and decomposition of the closed-state organic particles as the main source of carbon, which improve the turnover rate of organic carbon.…”

Section: Introductionmentioning

confidence: 99%

Effects of the Replacement of Chemical Fertilizers with Organic Fertilizers in Different Proportions on Microbial Biomass and Enzyme Activities of Soil Aggregates in Gravel-Mulched Field

Tang,

Du,

et al. 2024

Sustainability

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Gravel-mulched fields are a unique form of drought-resistant agriculture in the northwest region of China. In recent years, continuous cropping obstacles caused by the perennial cultivation of a single crop have seriously constrained the sustainable development of sand fields. This study aimed to explore the distribution patterns of different particle sizes of aggregates (>2, 1–2, 0.25–1, and <0.25 mm) and the relationships between their microbial biomass and enzyme activities under different organic fertilization and to explore the effective measures for improving soil fertility in a gravel-mulched field with an 8-year positioning test. The results indicate that the mass percentage of soil aggregates of ≥1 mm and their mean weight diameter (MWD), microbial biomass (carbon and nitrogen, bacteria, fungi, actinomycetes, and total phospholipid fatty acids), and their related enzyme activities (leucine aminopeptidase, LAP; N-acetyl-β-d-glucosidase, NAG; β-glucosidase, BG; and polyphenol oxidase, PPO) in aggregates of different particle sizes increased with the increase in the proportion of organic fertilizers replacing the N fertilizer. Among them, the organic fertilizer replacing more than 50% of chemical nitrogen fertilizers exerted the most significant effect. With the decrease in agglomerate particle size, the contents of microbial carbon and nitrogen showed a decreasing trend, whereas LAP, NAG, and BG activities followed an increasing trend, and the change in microbial biomass was not obvious. The correlation analysis showed highly significant positive correlations between the MWD of soil aggregates, microbial biomass, and the activities of LAP, NAG, BG, and PPO. Therefore, the replacement of more than 50% of chemical fertilizer with organic fertilizer was observed to be conducive to promoting the formation of large aggregates in sandy soils and increasing the microbial biomass and enzyme activities in different sizes of aggregates.

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Effect of conservation tillage and rice-based cropping systems on soil aggregation characteristics and carbon dynamics in Eastern Indo-Gangetic Plain

Mondal

Naik

Haris

et al. 2020

Paddy Water Environ

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Development of aggregates after application of maize residues in the presence of mycorrhizal and non-mycorrhizal pea plants

Cited by 8 publications

References 50 publications

Enhancing Soil Health and Plant Growth through Microbial Fertilizers: Mechanisms, Benefits, and Sustainable Agricultural Practices

Enhancing Soil Health and Plant Growth through Microbial Fertilizers: Mechanisms, Benefits, and Sustainable Agricultural Practices

Effects of the Replacement of Chemical Fertilizers with Organic Fertilizers in Different Proportions on Microbial Biomass and Enzyme Activities of Soil Aggregates in Gravel-Mulched Field

Effect of conservation tillage and rice-based cropping systems on soil aggregation characteristics and carbon dynamics in Eastern Indo-Gangetic Plain

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