Sanidade e germinação de sementes de trigo após o tratamento com o extrato pirolenhoso BIOQUIM

Abstract

The control of fungal diseases through seed treatment is an alternative that opens new perspectives in the control of diseases. In the search for alternative products for the control of phytopathogens in seeds, the pyrolignose extract becomes a promising possibility. The objective of this work was to evaluate the effects of the use of BIOQUIM pyrolignous extract on the incidence of fungi and germination in wheat seeds. The work was carried out in the Phytopathology and Soil Microbiology laboratory of the Federal University of Pampa, Itaqui - RS campus. The experiments were assembled in a completely randomized design (CRD), with five doses and five replicates. The doses used were 0 (control), 200, 400, 600 and 800μL of pyroligneous extract for each 100 g seeds. For each repetition, 50 seeds were used. In order to perform the sanity test, the filter paper method was used. The seeds were kept in a BOD chamber with a temperature of 20 ° C with a photoperiod of 12 hours. The evaluation was performed after eight days, evaluating the incidence and identifying the fungi in the seeds. For the germination test, the paper roll method was used, where the rolls were placed in BOD at 25ºC and photoperiod of 12 hours. The evaluation was performed at five days and eight days, computing the percentage of normal seedlings. The data were submitted to analysis of variance and the Regression test was performed, at a 5% probability level through the statistical program SISVAR. There was a 63.1% reduction in fungal incidence with increasing doses of BIOQUIM pyroligneous extract. In the germination test, germination inhibition was observed in the highest doses.