Biochar improves soil properties and corn productivity under drought conditions in South Korea

• DOI: 10.1007/s42773-023-00267-1
• Publication Date: 2023-10-12T03:28:52Z
• Authors: Jae-Hyuk Park; Jin-Ju Yun; Seong-Heon Kim; Jong-Hwan Park; Bharat Sharma Ach...; Ju-Sik Cho; Se-Won Kang
• Keywords: Drought; S; Water stress; Soil CO2 emission; Agriculture; Precipitation; 04 agricultural and veterinary sciences; Soil water content; Environmental sciences; Biochar; 0401 agriculture, forestry, and fisheries; GE1-350

Abstract Biochar has been shown to improve soil properties and plant productivity in soils with inherently low fertility. However, little reported for upland corns under dry wet precipitation regimes. This study investigates the effect of biochar addition on a range physicochemical, biological, hydrological properties, corn growth agrometeorological drought conditions. Here, experiments were laid out randomized complete block design three replications at two sites during 2017 2018 South Korea. Treatments included (i) CN: control (ii) IF: inorganic fertilizer (N–P–K) 145–30–60 kg ha −1 ; (iii) BS: barley straw 5 t (iv) CWBC: waste (v) CWBC + fertilizer; (vi) straw. The year was relatively dry, whereas wet. Despite conditions 2017, facilitated water conservation. higher increased quantity distribution nutrients top 15 cm. reduced bulk density, porosity, cation exchange capacity total organic carbon both years but bacterial counts only. Bacterial population generally Similarly, more CO 2 emitted than year. Results further indicated that can enhance biomass grain yield regardless index was, however, affected by rainfall significantly different across treatments All biomass, yield, highest IF treatment lowest CN treatment. Indeed, appeared quality conditioning effects years, ameliorating properties. Overall, storage, availability, uptake, therefore extremes. Graphical abstract