bachelorThesis
Potencial de produtos a base de fosfitos no controle de fitopatógenos em condições in vitro
Fecha
2016-12-01Registro en:
SANTOS, Stheffani Lucca dos. Potencial de produtos a base de fosfitos no controle de fitopatógenos em condições in vitro. 2016. 30 f. Trabalho de Conclusão de Curso (Bacharelado em Agronomia) - Universidade Tecnológica Federal do Paraná, Dois Vizinhos, 2016.
Autor
Santos, Stheffani Lucca dos
Resumen
The search for alternative means to control plant pathogens, this being much explored due to the serious problems caused by the use of pesticides. Thus, the objective of this study was to evaluate the effect of products based on potassium phosphite (Ultra K10 [marca registrada]), copper phosphite (Cube 700 [marca registrada]) and manganese phosphite (Ultra Mn10 [marca registrada]) in the control of fungi Fusarium oxysporum, Sclerotinia sclerotiorum, Rhizoctonia solani and Pythium sp. The experiment was conducted in Plant Health Laboratory of the Federal Technological University of Paraná - Campus Dois Vizinhos during 2016. The phosphite were added in concentrations 10, 20, 40 e 60 µL to PDA culture medium (potato, dextrose and agar), correcting the pH of the medium with NaOH and then poured to Petri [marca registrada] plates which were inserted fungus 5mm discs on the center of the plate. The experimental design was completely randomized with 4 replications and the experimental unit consisting of a Petri [marca registrada] board. The plates are wrapped in BOD at 20 ° C and 12 hour photoperiod. Evaluations of the mycelial growth were made daily until the witness plate was grown completely. The results observed for both pathogens, the products were presented fungitoxic and fungicidal effect at the doses tested. And the highest doses, 40 and 60 uL were those that achieved the greatest effect on the fungi.