Spray deposition assessment and benchmarks for control of Alternaria brown spot on mandarin leaves with copper oxychloride

J. Gideon van Zyl and Paul H. Fourie
Citrus Research International | Department of Plant Pathology, Stellenbosch University

Gerhardus C. Schutte
Citrus Research International

Inadequate disease control on citrus foliage and fruit is often attributed to insufficient fungicide spray deposition on target surfaces. This study describes a novel spray deposition assessment protocol and determines deposition benchmarks indicative of the biological effectiveness for better interpretation of spray deposition results.
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