Avaliação química no perfil do solo após o uso de diferentes fertilizantes

Abstract

Due to soil acidity, many farmers opt for limestone as a corrective measure, mainly because of its lower cost. However, with recent technological advancements, several more soluble products with different soil interactions have been developed, potentially delivering faster and more effective results. This experiment was conducted at the UTFPR experimental unit to assess the performance of the agricultural fertilizers Calsite, IsofertilForce S, and NutPhos in soil fertility parameters. To achieve this, soil chemical variables were analyzed at different depths (surface and subsurface) both before treatment application (pre-application) and after harvest (post-application). The tested treatments included: T1 (Control), T2 (Limestone 2800 kg per hectare), T3 (Calsite 500 kg per hectare + Force S 400 kg per hectare), T4 (Isofertil Force S Plus 300 kg per hectare), and T5 (NutPhos 300 kg per hectare). The study evaluated macronutrients (calcium and magnesium) alongside soil chemical attributes such as base saturation, potential acidity, and pH. The results did not indicate significant changes in fertility levels, likely because the soil already had established fertility and was managed under a no-tillage system.