Germinação e vigor de sementes de alface tratadas com microrganismos eficientes

Abstract

Lettuce is of great importance in human nutrition, especially because it is a source of vitamins and minerals and is the most consumed vegetable in the country. Considering it as an agroecological alternative for seed treatment, the present work aimed to verify the effect of seed treatment with different doses of microorganisms on the physiological quality of lettuce (Lactuca sativa) seeds. Developed at the Federal University of Fronteira Sul, Campus Erechim, the experiment was carried out in a completely randomized design, with four replications, with inoculation of seeds with different doses of efficient microorganisms, namely: 0%, 25%, 50%, 75% and 100%. The tests carried out were: germination, first germination count, germination speed index, seedling length and weight (total, aerial part and root). Germination and the first germination count were shown to be positively influenced by the use of efficient microorganisms used in seed treatment, converting non-germinated seeds into normal seedlings. The germination speed index was similar with and without the use of efficient microorganisms, only the 50% dose differed, presenting a lower germination speed index. Inoculation with efficient microorganisms did not stimulate an increase in seedling size (total, root and shoot length). Regarding seedling weight, only root weight was affected by the use of efficient microorganisms, presenting the highest value at a dose of 25%. Therefore, the use of efficient microorganisms inoculated with lettuce seeds contributes to increasing the percentage of germination and, in general, the vigor is benefited, providing better development of the seedlings. Therefore, the use of efficient microorganisms is an effective alternative for the treatment of lettuce seeds in agroecological and organic production systems.