Desempenho fisiológico e fitossanitário de sementes de feijão-comum tratadas com fungicidas biologicos ou químicos

Abstract

Common bean (Phaseolus vulgaris L.), has great economic and social importance, and is constantly exposed to phytopathogens that use the seed as a vehicle for dissemination. The seed treatment aims to reduce or eradicate the fungi present in the seeds and in the soil, allowing the establishment of a fast and uniform stand. And, the performance of the seeds is affected by different important factors for the quality of the seed, since the treatments can have a positive influence. The objective of this work was to evaluate the physiological and phytosanitary performance of seeds of different common bean genotypes treated with biological or chemical fungicides. The seed treatments intended for the work were: Pardella®, Ecotrich®, Tricho-Turbo®, Maxim® XL and Standak® Top. The commercial genotypes were: IPR Quero-Quero, IPR Campos Gerais, IPR Nhambu and the creole varieties were: Pardinho Mineiro and Mulatinho. The genotypes were submitted to evaluations of germination, shoot and root length, as well as dry mass and emergence in a greenhouse. The experiment was conducted at the Federal Technological University of Paraná (UTFPR), Dois Vizinhos - PR, at the Didactic Laboratory of Seed Analysis. The experimental design was completely randomized in a 6x5 factorial scheme, with 4 replications. It can be said that the seed treatments did not influence the germination capacity of the seeds, however, they influenced the performance of the seeds according to the vigor of the genotypes. There was control efficiency for the phytopathogens observed.