Biochar and wheat straw affecting soil chemistry and microbial biomass carbon countrywide

Abstract Indicating how different sources of organic matter (OM) may affect the properties a wide range soil types, at varying moisture (SM), is significance in agricultural fields. A large dataset samples (0–30 cm) was collected from parts Iran (21 regions, with physical, chemical, and biological properties) to determine effects OM SM on chemical (pH, salinity, carbon) (microbial biomass carbon, MBC) properties. The were incubated (9-month period) experimental treatments including (control (M1), 2% wheat straw (WS) (M2), biochar (BI) (M3)), levels (0.2 field capacity, FC (V1), 0.7 variable (V2), constant (V3), saturated (V4)). Wheat pyrolyzed (at 500°C) produce BI, their determined. BI salinity (3.1 dS/m) significantly higher than WS (2.8 dS/m). treatments, especially increased MBC compared control treatment. two fertilization pH, OM, MBC, though such functions (drying rewetting cycles). Due C percentage (61%), affected by moisture, more pronounced parameters. tested (WS BI), acting as can strongly contribute efficiency