Western Australia, Plant disease, Early blight, Target spot, Potato disease
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The effective control of Potato Early Blight or Target Spot by the use of Zineb fungicide (used in the proprietary form Dithane Z.78) has previously been reported in this Journal. It was shown in preliminary spray trials that the foliage blight caused by this disease is very destructive, and by the application of four Dithane sprays yields were increased in the order of 30 per cent., equivalent to approximately four tons per acre. Further experiments have now been conducted and the results indicate that even two applications of Dithane spray may, under conditions of severe blight attack, promote worthwhile higher yields.
Cass Smith, W P.; Hardie, M; and Lowe, B N.
"Further experiements on the control of early blight or target spot of potatoes,"
Journal of the Department of Agriculture, Western Australia, Series 3: Vol. 3
, Article 12.
Available at: https://researchlibrary.agric.wa.gov.au/journal_agriculture3/vol3/iss1/12