Efeito de substratos orgânicos na emergência e no desenvolvimento inicial do gergelim branco (Sesamum indicum l.) crioulo, no Alto Sertão Sergipano

Abstract

Sesame (Sesamum indicum L.) is a plant adapted to semi-arid conditions, being considered a rustic culture, in addition to possessing great economic and social importance due to the various purposes of use of its seeds that contains about 50% oil content, being an alternative cultivation to increase the income of family farmers. However, information about fertilization, mainly organic, for sesame, are still scarce. Therefore, the present work aimed to evaluate the effect of organic substrates as a source of nutrients in the emergency phase and initial development in sesame culture. The experiment was conducted in the months of May and June, in the region of Monte Alegre de Sergipe, in the High Sertão Sergipano. The design used was in randomized blocks, four (04) blocks and five (05) treatments were made up of a witness, four more treatments with substrates. The materials used were: Solo (T0), taken from a nearby area where the experiment was assembled; Vermicomposed + solo (T1); Bovine manure + solo (T2); Serigua + solo (T3) lump substrate; and commercial substrate of Bioplant + solo (T4) company. The parameters evaluated were as follows: seedlings emergence on days after sowing (DAS); Emergency speed (EVE); Aerial part length (CPA); Number of sheets (NF); Length of the root (CR); Weight of fresh mass (PMF); and dry mass weight (PMS). According to the results obtained, it was found that for all parameters evaluated all substrates used provided conditions required for the seeds, allowing them to initiate their emergency process. However, the Vermicomposed substrate + soil and Bioplant + solo commercial substrate were more efficient in all parameters evaluated except in the criterion of dry mass, where the substrates used did not present high differences.