Extracellular Enzyme Patterns Provide New Insights Regarding Nitrogen Transformation Induced by Alkaline Amendment of Acidic Soil
نویسندگان
چکیده
Nitrogen (N) availability is generally a limiting factor in highly acidic soil, which could be improved by amending these soils with alkaline materials. Soil extracellular enzyme activity (EEA) plays an important role N transformation; current knowledge gap how this occurs amended material. The present 45-day incubation experiment was designed to examine the effects of different amounts materials (urea and/or calcium–silicon–magnesium–potassium fertilizer (CSMP)) on transformation. results show that soil pH significantly increased after CSMP amendment (1.2 units) and net mineralization (Rmin), nitrification (Rnit) rates, ammonification (Ramo) rates. changed EEA but differing or opposing effects, e.g., Rnit positively correlated activities L-leucine aminopeptidase, β-xylosidase, α-glucosidase, N-acetyl-β-glucosaminidase negatively β-1, 4-glucosidase β-cellobiosidase. A machine learning analysis indicated best predictor for Rmin Ramo pH, Rnit, it nitrate. study improve our understanding control pH. Such lead more bespoke nutrient management planning at field scale, leading better agronomic environmental outcomes.
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ژورنال
عنوان ژورنال: Agronomy
سال: 2022
ISSN: ['2156-3276', '0065-4663']
DOI: https://doi.org/10.3390/agronomy12123015