Western Australia (Swan Valley), soils, hormone sprays, muscat grapes, currants.
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In 1942, the Department of Agriculture was asked to investigate a serious decline in yield and vigour of grape vines on certain areas in the Swan Valley. The varieties mainly affected were muscats and currants. The problem was most severe on the soil types of a sand or light sandy loam nature and on poorly drained areas. On areas of heavier textured sols with a friable clay subsoil the vines were generally regarded as economically satisfactory.
Jones, L. T.
"Hormone sprays and their effects on the setting, yield and vigour of currant grapes,"
Journal of the Department of Agriculture, Western Australia, Series 3: Vol. 4
, Article 8.
Available at: https://researchlibrary.agric.wa.gov.au/journal_agriculture3/vol4/iss5/8