This study was conducted to determine how irrigation alters the effects of biochar on soil health parameters in a coarse texture soil for two consecutive growing seasons. Surface soil (0–15 cm) samples from a split-plot randomized block design (main plots, unirrigated and irrigated; subplots, 0 and 11.2 Mg ha − 1 biochar) taken after soybean ( Glycine max ) harvest in 2022 and 2023 were analyzed for electrical conductivity, pH...