BIOFERTILIZANTE Á BASE DE MICROALGAS TESTADO NA GERMINAÇÃO DE ALFACE (Lactuca sativa L.)

Abstract

The work presented the production of a biofertilizer produced based on microalgae and tested on lettuce (Lactuca sativa) germination. Algae samples were collected, consumed and cultivated in glass bottles, receiving ventilation and natural light, stimulating humidity, and the microalgae strains were cultivated using the WC cultivation medium (Guillard; Lorenzen, 1972). After the initial dough had grown, and with maximum simplicity, the contents were mixed for direct use for processing. Using gerbox boxes, two blotting papers were placed per box and moistened with 0, 3, 6 and 9 mL of biofertilizer and 13, 10, 7 and 4 mL of distilled water respectively, with 4 treatments with 5 replications, then they were Placed in B.O.D. with a 12-hour photoperiod and constant temperature of 25 °C (BRASIL, 2009). The first and second readings were carried out respectively 4 and 7 days after implantation in the B.O.D. (BRAZIL, 2009). As a result, there was no significance in the treatments using microalgae-based biofertilizer, but group 2 had more germinated plants than groups 3 and 4.