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Dec 5, 2023 · Does synthetic nitrogen fertilizer burn up soil organic matter? Whether you are focused on soil health, soil sequestration, or soil carbon credits, this is an important question. The persistent claim is that synthetic N fertilizer can “burn” soil carbon by supercharging the soil microbes. This claim mainly arises from a 2007 research article from researchers at the University of Illinois ...
Feb 18, 2021 · During soil N mineralization, ON in soil organic matter is ammonified by soil microbes into ammonia (NH 3) and ammonium (NH 4 +)—a process which is often quickly followed by nitrification in agricultural soils, converting soil NH 4 + to other soil IN forms of NO 2 − and NO 3 −.Soil N may be lost in denitrification processes by which NO 3 − is converted into gaseous forms of NO 2, N 2 O ...
- Soudeh Farzadfar, J. Diane Knight, Kate A. Congreves
- 2021
Mar 18, 2024 · Fertilizers derived from these bacteria can generate acids and antimicrobial substances to suppress pathogenic bacterial growth in the soil. Moreover, microbial fertilizers produced from fungi are capable of secreting extracellular enzymes and organic acids, thereby decomposing soil organic matter and altering microbial diversity.
First, the sub set on soil property data encompassing soil organic carbon (SOC), total nitrogen (TN) and pH was subjected to a meta-analysis in order to analyse whether or not organic farming led to an enrichment in the soil . Across the entire dataset targeting microbial community traits, SOC was on average 19% (1.19, 1.14 to 1.23, p<0.001), TN 13% (1.13, 1.07 to 1.20, p<0.001) and pH 2% (1. ...
Jan 1, 2024 · Long-term fertilizer postponing promotes soil organic carbon sequestration in paddy soils by accelerating lignin degradation and increasing microbial necromass Soil Biology and Biochemistry ( 2022 ) , Article 108839 , 10.1016/j.soilbio.2022.108839
Mar 12, 2019 · Therefore, our coupled field and laboratory N-addition experiments demonstrated that the suppressive effect of N fertilizer on gross ammonification can be attributed to the direct effect of N fertilizer application on microbial activity rather than the indirect effects of N fertilizer on microbial activity that are controlled by crop growth (i.e., soil moisture, soil temperature, and enhanced ...
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The discovery that much of the organic matter in soil has a microbial signal (rather than plant; Bird et al., 2008) indicated that the residues and metabolic by-products generated through the processing of organic matter by fungi and bacteria are important sources of organic matter, including stable forms (Grandy and Neff, 2008; Prescott, 2010).
