Abstract
Biosolid compost is increasingly adopted in agriculture to improve soil properties, including organic matter, nutrient availability, and soil health indices. However, concerns about contaminants such as PFAS and heavy metals highlight the need for careful monitoring and management to mitigate environmental risks. This experiment examined the effects of biosolid compost-amended soils on the growth, physiology, and development of basil (Ocimum basilicum). Basil plants were cultivated in soils mixed with biosolid compost at concentrations of 0%, 5%, 10%, 15%, and 30% (v/v) and assessed over three planting trials for growth performance, soil characteristics, and biochemical responses. The study evaluated impacts on soil pH, moisture content, nutrient levels, basil yield, and quality. Results showed that compost concentrations above 15% delayed germination and reduced early seedling vigor, especially in the Prospera® PL4 (PR4) variety when compared to Prospera® CG1 (PR1). Conversely, moderate concentrations (10% to 15% v/v) enhanced soil organic matter, stabilized pH, and increased nutrient availability, leading to greater plant biomass and chlorophyll content. This research advances knowledge of biosolid use in high-value crop production and provides practical insights for sustainable soil management in nutrient-poor regions like Florida.
