Propriedades físicas do solo sobre diferentes sistemas de preparo na cultura do Sorgo consorciado com Urochloa ruziziensis

Abstract

Physical Properties of Soil in Different Tillage Systems in Sorghum Intercropped with Urochloa ruziziensis

ABSTRACT: Inadequate soil management is a primary factor contributing to soil degradation, and understanding the physical properties of soil is crucial for identifying compaction issues that directly impact crop productivity. This study aimed to evaluate the physical properties of soil under different preparations in sorghum cultivation intercropped with Urochloa ruziziensis, specifically comparing conventional tillage, minimum tillage, and no-till systems. Trenches measuring 0.50 m in width, 0.50 m in length, and 0.40 m in depth were excavated for soil sample collection at depths of 0.00–0.10 m, 0.10–0.20 m, 0.20–0.30 m, and 0.30–0.40 m. Analyses using a digital penetrometer (penetrolog) were conducted up to a depth of 0.60 m for each type of preparation. The assessed soil physical attributes included soil density (SD), total porosity (TP), macroporosity (MP), microporosity (mP), penetration resistance (PR), and gravimetric moisture content (MC). The evaluated physical properties exhibited variations among different planting systems. No significant soil compaction was observed in the no-till system, as measured by penetrometer analysis. However, both conventional and minimum tillage systems demonstrated significant soil compaction between depths of 0.10 m and 0.30 m. Keywords: Sorghum bicolor L, Urochloa ruzizensis, soil manegemant, consortium, ILPF.