Tratamento de sementes de tomate com protudo comercial a base de extrato de alga

Abstract

The tomato (Solanum lycopersicum) belonging to the Solanaceae family, has its origin in the Andean zone of South America. It is one of the main vegetables produced in Brazil, in Santa Catarina, the tomato is present in all regions where family production predominance. Seeds of vegetable species consist of a high cost of acquisition, being of great importance the use of high quality. Different types of treatments have been studied, among them, biostimulants, which currently has helped with germination, vigor and growth of seedlings of various crops of agricultural importance. The present work was carried out with the objective of evaluating the effects of the covering of tomato seeds with commercial biostimulant based on Ascophyllum nodosum algae on germination, seedling development and vigor. The experiment was carried out at the Seed and Grain Laboratory of the Federal University of Fronteira Sul - Chapecó campus, in a completely randomized design (DIC) with 5 treatments, which consisted of doses of: 0; 12.5; 25; 50 and 100 mL.L- 1 of biostimulant. Tomato seeds from cultivar Marmande were used. The percentage of germination at 5 and 14 DAS, root length and shoot part of seedlings, fresh and dry mass of seedlings and germination and length of seedlings in accelerated aging at 5 DAS were evaluated. The results were found in the analysis of variance and regression analysis using the SISVAR statistical analysis program. The treatment of tomato seeds of the cultivar Marmande with the biostimulant Biozyme promoted beneficial effects on germination at a dose of 100 ml.kg. Regarding seed vigor it is concluded that: doses between 12.5 and 50 ml.kg increase the growth of seedling roots, while the dose of 100 ml.kg favors the growth of the aerial part, and the accumulation of fresh and dry seedling mass. No effects of treatments were detected in relation to germination and seedling growth after accelerated aging.