Uso de microrganismos eficientes como biofertilizante na cultura da alface (lactuca sativa l.)

Abstract

This study aimed to evaluate the use of effective microorganisms (EMs) and other microbial biofertilizers as alternatives to chemical fertilizers in the cultivation of curly lettuce (Lactuca sativa L.). Four treatments were tested: control (water), application of Trichoderma asperellum, Serratia marcescens, and artisanally produced EMs. The solutions were analyzed microbiologically, and the plants were evaluated for height, number of leaves, leaf length and width, and fresh weight across three sampling dates. Laboratory results indicated high microbial activity in the EMs before fermentation, but a significant reduction afterward. In the field, no statistically significant differences were observed among treatments for any of the agronomic variables evaluated, including plant fresh weight.