Tratamentos bióticos e abióticos em sementes de duas cultivares de arroz

Abstract

The purpose of this work is to highlight the most effective treatment under the parameters evaluated (emergence, vigor, root length, aboveground length and dry mass) in rice seeds of the cultivars IRGA 431 CL, and IRGA 424 RI. The treatments used were a control (T1), bacteria Bacillus amyloliquefaciens (T2), fungus Trichoderma harzianum (T3), abiotic activator of resistance based on potassium phosphite (T4), and a chemical treatment Standak Top® (T5). The study was carried out in the phytopathology laboratory of the Universidade Federal da Fronteira Sul (UFFS), Cerro Largo campus, and conducted over a 7-day period. The treatment made with the phosphite-based resistance activator proved to be more effective, providing a stimulating effect on seedling growth and dry mass of roots and aerial part in the cultivars evaluated. Thus, presenting potentialities when seeking improvement in the fields of agricultural production.