Uso de bioestimulantes a base algas marinhas para tratamento de sementes de trigo

Abstract

Wheat is a cereal, expressive in the world grain market, multiplied via seeds. The use of seed treatment enables an improvement in the reproductive and development potential of the cultivar where different categories of products are used. Biostimulants are rich in micro and macronutrients and act as plant regulators, which can generate positive effects for germination, growth and development of seedlings and productivity. Nowadays, marine algae-based biostimulants are being studied. Thus, this study aims to evaluate the influence on the treatment of wheat seeds, evaluating germination and seedling development. Two marine algae-based biostimulants, ascophyllum nodosum and Solieria spp, were used in the treatment of two wheat cultivars, Sinuello and Ponteiro, with doses of (0,00; 0.55; 1.10; 2.20 ml L-1) . The design was completely randomized in a 2 x 4 factorial exchema (cultivar and doses), separated for each biostimulant, with four replications for each treatment. For evaluation, germination speed index (IVG), shoot length (PA), root system length (SR), green mass (MV), dry mass (DM), normal seedlings (PN), abnormal seedlings ( Pa), carried out at the Seeds and Grains laboratory of the Federal University of Fronteira Sul campus Chapecó. Data were subjected to analysis of variance, Tukey test with comparison (p<0.05) and regression analysis in the SISVAR program. Seaweed biostimulant seed treatments with different doses did not improve the submitted evaluations. Only in the root system of the pointer cultivar was there a difference between one product and another, but there was no difference between the doses. Treatments of wheat seeds with seaweed biostimulants had no positive results.