Utilização de microrganismo eficiente na produção sustentável da alface (Lactuca sativa l.)

The modernization of Brazilian agriculture has brought different socioeconomic and environmental impacts. As a result, the demand for alternative sources in vegetable production is increasing as demand for healthy and quality food has increased. Crop fertilization is one of the biggest challenges of organic agriculture. An alternative has been the use of efficient microorganisms to promote improvements in the conditions of cultivated soil. Thus, this work aimed to evaluate the effect of efficient microorganisms collected in soils with different vegetation types on the productive characteristics of lettuce crop. The experiment was carried out at the Federal Institute of Education, Science and Technology of Minas Gerais (IFMG) - Bambuí campus, using a randomized block design (DBC), with 6 treatments and four replications. The treatments were: Witness (without use of MS) and MS collected in five locations with different vegetation cover (pasture area, orchard, forest, pasture intercropped with eucalyptus, vegetable garden). The following characteristics were evaluated: plant diameter, number of leaves, green weight of shoot and root and dry weight of shoot and root. The data obtained were subjected to analysis of variance (F test) using the Sisvar program (FERREIRA, 2000). The results indicated that there was no significant difference for the use of MS as well as between MSs from different locations on the characteristics evaluated. This may have been due to the lack of already fermented organic matter, preventing the action of microorganisms or due to the use of excess mineral fertilizers in the area prior to the implementation of the experiment, masking the appearance of differences between the applied treatments.