Potassium phosphite alleviate the symptoms of Fusarium oxysporum in banana trees
DOI:
https://doi.org/10.52945/rac.v33i3.548Keywords:
Alternative control, Panama disease, Musa sp.Abstract
The objective of this work was to evaluate the potassium phosphite action, in different doses, on the effects of Panama disease. For this purpose, five doses of potassium phosphite (5; 10; 15; 20mL plant
-1 ) and a control treatment were used. Symptom severity and productivity per “Prata Anã” banana plant were evaluated. It was found that there was an evolution of the disease during the months of evaluation in the plants of the control treatment, reaching a maximum of 95% of infection in the month of April, causing total loss of production. For the severity of symptoms, an average reduction in months of 46.79% was obtained when the dose of 10mL plant-1 was applied, while for productivity a maximum dose of 14.43mL plant was calculated, for yield of 18.97 kg plant-1 was found. Thus, it was concluded that doses of potassium phosphite, between 10 and 15ml plant-1 , significantly reduce the severity of the symptoms of Panama disease in banana trees, increasing their productivity in a contaminated area.
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Copyright (c) 2020 Lincoln Graia do Nascimento Cunha, Leandra Regina Semensato, Eduardo Pradi Vendruscolo, Míriam de Almeida Marques
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