Soil Enzyme Activities in Agroecosystem Management
Summary
Soil enzymes, produced by microbes, plant roots and soil fauna, act as critical catalysts for the decomposition of organic matter and the mobilisation of nutrients within agricultural systems. Hydrolytic and oxidative enzymes drive the turnover of carbon, nitrogen and phosphorus, thereby sustaining soil fertility and influencing crop productivity. Measurement of potential and in-situ enzyme activities—such as those of phosphatases, dehydrogenases and glucosidases—provides a rapid, sensitive indicator of microbial functional capacity and soil health, often preceding detectable changes in bulk soil properties. By integrating enzyme assays with assessments of management practices—cover cropping, conservation tillage and organic amendments—farmers and agronomists can tailor fertiliser regimes and crop rotations to enhance nutrient cycling, improve soil structure and bolster resilience to climatic stress. Such enzyme-based diagnostics underpin sustainable intensification initiatives worldwide, supporting evidence-based optimisation of agroecosystem performance.
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Soil Enzyme Activities in Agroecosystem Management publication trend
The graph below shows the total number of articles in soil enzyme activities in agroecosystem management across all publications each year (not limited to Nature Index journals).
Technical terms
Soil extracellular enzymes: Microbial- and root-derived catalysts secreted into the soil to decompose complex organic compounds into accessible nutrients.
Phosphatase: Hydrolytic enzyme that releases inorganic phosphate from organic phosphomonoesters, indicating the soil’s phosphorus-cycling potential.
Dehydrogenase: Oxidoreductase enzyme involved in microbial respiration; often used as a proxy for overall microbial metabolic activity.
Microbial biomass carbon (MBC): The pool of living microbial cell carbon in soil, used to normalise enzyme activities and gauge microbial community size.
Specific enzyme activity: The rate of an enzyme-catalysed reaction per unit microbial biomass, reflecting microbial efficiency in resource utilisation.
References
- Soil extracellular enzyme activity increases during the transition from conventional to organic farming. Agriculture Ecosystems & Environment (2024).
- Effect of water and fertilizer regulation on the soil microbial biomass carbon and nitrogen, enzyme activity, and saponin content of Panax notoginseng. Agricultural Water Management (2023).
- Carbon, Nitrogen, Phosphorus, and Extracellular Soil Enzyme Responses to Different Land Use. Frontiers in Soil Science (2022).
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