Efeito do tratamento de sementes de soja com produto à base de extrato de algas e vinhaça

Abstract

With the increase in soybean grain prices and its high demand, efforts to improve this crop are continually being pursued. As a result, it becomes necessary to perform tests, such as germination tests, in controlled environments like laboratories, using different products. An example is the product Wiagro® , with tests conducted at different dosages and periods. This experiment was conducted in the seed and grain laboratory located at the Universidade Federal da Fronteira Sul, Chapecó Campus, using seeds from Brasmax, cultivar BMX Lança, Golden Harvest, cultivar GH5933IPRO, and Embrapa, cultivar BRS5804RR, from the 2022/2023 harvest. The trial was carried out in a completely randomized design with a factorial experimental setup, comprising three factors and three sub-factors, each with four replicates. The three factors were the cultivars BMX Lança, GH5933IPRO, and BRS5804RR. The first sub-factor was dosage 0 (control), the second sub-factor was dosage 1 (1g/kg−1), and the third sub-factor was dosage 2 (2 g kg−1), with four replicates for each sub-factor. In the germination test, the seeds were sown on Germitex paper substrate and kept in a germinator at a constant temperature of 25 °C. Each sample was evaluated on the fifth and eighth days after sowing, assessing the germination rate, the rate of normal and abnormal seedlings. Ten seedlings were selected from each roll to evaluate root and shoot length. Subsequently, the same ten seedlings were used to quantify dry mass. The data were subjected to analysis of variance (F-test at 5%) and Tukey's test. Seed treatment with the commercial product based on seaweed extract and vinasse (Wiagro® ) contributed to improving certain aspects of seed quality and plant development; however, its contribution varied among cultivars.