Pó de concha de sururu: correção da acidez do solo e desenvolvimento de olerícolas

Abstract

Due to their formation processes and parent materials, most Brazilian soils are naturally acidic and chemically poor. Low cation exchange capacity (CEC), high acidity, and low base saturation are major factors limiting agricultural production. Therefore, soil acidity correction is essential for crops to achieve their productive potential. This study aimed to evaluate the potential of sururu shell powder (SSP) as an alternative soil acidity amendment through two greenhouse experiments. In the first experiment, SSP was compared with agricultural limestone regarding its effects on soil chemical properties and tomato growth. In the second experiment, the interaction between SSP and poultry litter fertilization was evaluated with respect to radish agronomic performance and residual soil chemical properties. The results demonstrated that SSP was as effective as agricultural limestone in increasing soil pH and promoting tomato vegetative growth. In radish cultivation, prior incubation of SSP enhanced the efficiency of organic fertilization, resulting in greater vegetative growth and biomass production. It is concluded that sururu shell powder is a viable alternative to agricultural limestone for correcting soil acidity, especially when associated with organic fertilization.