Demonstration unit with chemical fertilization in cassava crops in sandy soil, in southern Santa Catarina

Abstract

This study aimed to determine the best doses and timing of chemical fertilization in cassava cultivation under Quartz Sand soil conditions. The cost of fertilizer and labor for its application was equivalent to 3.0 t/ha of roots. Thus, on average over the four years, chemical fertilization increased root production by 15.1 t/ha and cost the equivalent of 3.0 t/ha of roots, resulting in a yield of 12.1 t/ha (15.1 - 3.0), which can be considered a highly profitable agronomic practice in economic terms.