Influence of potassium salt on cracking behavior of purple soil

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 The influence of potassium salt on the cracking behavior of purple soil under wetting–drying cycles is a critical issue in soil physics and land management, particularly in regions where purple soils are widely distributed and subjected to seasonal rainfall variability. Potassium salts alter the physicochemical properties of soil by affecting clay mineral interactions, osmotic potential, and pore-water dynamics. During repeated wetting–drying cycles, the presence of potassium ions (K⁺) can modify soil aggregation and shrink–swell characteristics, thereby influencing crack initiation, propagation, and network geometry. Moderate concentrations of potassium salt may enhance particle flocculation and improve aggregate stability, reducing crack width and density. However, excessive potassium accumulation can increase soil salinity, weaken structural integrity, and intensify desiccation cracking due to osmotic stress and reduced cohesion among particles. These cracking patterns significantly impact water infiltration, solute transport, root penetration, and overall soil productivity. Understanding the interactive effects of potassium salt concentration and hydrological cycles is essential for sustainable soil management, salinity control, and agricultural productivity in purple soil regions.

#PurpleSoil #PotassiumSalt #SoilCracking #WettingDryingCycles #SoilSalinity #SoilPhysics #ShrinkSwell #SoilStructure #AgriculturalSustainability #SoilManagement#WorldResearchAwards

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