Efeito do extrato de algas marinhas na germinação da beterraba (Beta vulgaris L.) e tomate (Lycopersicum esculentum)

Oleraceous crops are propagated by seeds, for the most part, or by planting vegetative parts. A growing interest in the use of natural biostimulant substances has been observed. In ecological aspects, the excessive use of agricultural inputs has a scenario of ecosystem imbalance associated to the practices of soil management. An application of biostimulants via seed has a proposal as a way to standardize germination. Algae from a group that has more favorable products on as more varied cultures making an alternative of use as biostimulant. Thus, the aim of this work was to evaluate the effect of different marine algae biostimulants on the germination of Beta vulgaris and Lycopersicum esculentum seeds. The seeds were submitted to the treatments: T0 dried seeds, T1 seeds pre-soaked in water, T2 pre-soaking in the solution containing 10 mL of distilled water and 10 mL of algae extract; T3 by pre-soaking in the solution containing 5 mL of algae extract and 15 mL of distilled water and T4 by pre-soaking in the solution containing 2.5 mL of algae extract and 17.5 mL of distilled water. With the result obtained, it was concluded that the seeds pre-soaked in algae extracts presented a better percentage of germination and red algae (Kappaphycus alvarezii) presented the best results.