Control of Spider Mites and Black Spot on Roses with Acaricide-Fungicide Sprays and Dusts

Aramite® (2-( p-tert -butylphenoxy)-1-methylethyl 2-chloroethyl sulfite), demeton, and malathion were found to control the two-spotted spider mite ( Tetranychus telarius L.) on roses. Maneb, zineb, ferbam, captan, sulfur-copper, and captan-sulfur were effective against black spot. Maneb and zineb were superior to ferbam and captan. Effective acaricide and fungicide treatments prevented damage to foliage and leaf drop, and resulted in the production of more flowers of better quality. Generally there were no significant differences between spray or dust methods of application. However, Aramite and malathion dusts did significantly reduce mite populations whereas sprays did not.