Background and Aims Volumetric soil water content ( $${\theta }_{v}$$ θ v ) strongly regulates nutrient diffusion, particularly under drying conditions. This study investigates how plant-derived mucilage alters water retention and the effective diffusion coefficient ( $${D}_{s}$$ D s ) of calcium (Ca 2 ⁺) in soils with contrasting textures (sand, sandy loam, and loam) under varying $${\theta }_{v}$$ θ v . Methods We amended so...

High phosphorus (P) fixation in soils is a major constraint on crop production worldwide. To address this challenge, we investigated plant-induced changes in soil P pools, aiming to identify superior P uptake strategies by examining whether different upland rice genotypes access various P sources in the rhizosphere. Two genotypes (DJ123 and Nerica4) with varying P acquisition efficiencies (PAEs) were grown in an Andosol under...

This study investigates the impact of soil erosion-induced topsoil dilution by subsoil admixture on the input and turnover of recently assimilated carbon (C) in soil during crop growth. A pot experiment was conducted with three admixture levels (0%, 12%, and 24%) of subsoil (Bt material) mixed into topsoil (Ap material) of an eroded Nudiargic Luvisol. Spring rapeseed ( Brassica napus L.) plants were grown in pots under control...

Aims High Phosphorus (P) efficiencies such as internal P utilization efficiency (PUE) and P acquisition efficiency (PAE) are crucial for upland rice production, particularly on highly P-fixing soils like Andosols. While the effect of root traits associated with high PAE in upland rice has been studied intensively, less attention has been given to the origin of P (native soil-P versus fertilizer-P) taken up by plants when evalu...

Purpose The goal of this work was to contribute to a better understanding of the process of rhizodeposition in crops and to find helpful approaches for creating a simple model of rhizodeposition. For this purpose, we tested three hypotheses about the relationships and changes in the relative C partitioning coefficients and their ratios. In particular, we analyzed the relationships between root growth, belowground respiration,...