Efeito de sanificantes no controle pós-colheita da podridão parda (Monilinia fructicola) e da podridão mole (Rhizopus stolonifer) em pêssegos

Abstract

The purpose of this work was to study the in vitro and in vivo effects of the sanitizing products benzalkonium chloride (Fegatex®), citric biomass (Ecolife40®) and ozone gas on the control of brown rot (Monilinia fructicola) and soft rot (Rhizopus stolonifer) in peaches cultivars "Aurora", "Dourado" and "Flor da Prince". Benzalkonium chloride and citric biomass, both at 1000 μL L-1, completely inhibited the radial (mycelial) growth of M. fructicola, although none of them controlled R. stolonifer in vitro. The preventive use of benzalkonium chloride at 3000 μL L-1 reduced brown rot in non-injured peaches. Benzalkonium chloride applied as curative in non-injured peaches was effective against M. fructicola at all concentrations. None of the products tested curatively was effective in preventing the development of brown rot when the fungus was inoculated over fruit injuries. None of the products was effective in controlling soft rot. Ozone gas at 0,1 μL L-1 was not effective in controlling brown or soft rots in peaches.