Phosphorus Fertilization Reduces Soil Microbial Necromass Carbon Content in Tillage Layer of Dry Farmland on Loess Plateau

Agriculture, Journal Year: 2025, Volume and Issue: 15(5), P. 485 - 485

Published: Feb. 24, 2025

This study examines how nitrogen and phosphorus fertilization influence soil microbial necromass carbon (MNC) content of farmland on the Loess Plateau, central Gansu. Based an extensive (6 years) experiment, a control (CK, no fertilization) three treatment groups employing different methods, namely, (N, 115 kg·ha−1), (P, combined (NP, kg·ha−1 each), were set up in this research. The results show that, tillage layer (within depth range 0–20 cm), application and/or phosphorous fertilizers can significantly reduce ratio between glucosamine muramic acid (GluN/MurA) (p < 0.05), with reduction 12.70–35.29%. Phosphorus also fungal (FNC) MNC their contributions to SOC 0.05). In addition, both increase bacterial (BNC) contribute Primarily because reduced accumulation efficiency FNC, decrease MNC. non-tillage 20–40 FNC soils impacts addition does not alter Total (TP), total (TN), pH, nitrogen-to-carbon biomass (MBN/MBC), leucine aminopeptidase (LAP), β-glucosidase activities (BG) are primary factors that affect changes BNC, summary, alone decreases contribution reduces pool stability layer. On contrary, its impact SOC, thus improving SOC.

Language: Английский

Co-application of compost and biochar promotes soil carbon sequestration: Evidence from eco-enzymatic stoichiometry

Environmental Technology & Innovation, Journal Year: 2025, Volume and Issue: unknown, P. 104211 - 104211

Published: April 1, 2025

Language: Английский