• Die invloed van mangaan op vrugrypwording by Vitis Vinifera L. cv. Pinotage 

      Barker, Wilma (Wilma Henriette) (Stellenbosch : Stellenbosch University, 1964-12)
      ENGLISH ABSTRACT: The influence of manganese sulphate sprays on the yield and ripening of fruit of manganese-deficient Vitis vinifera L. (cv. Pinotage) plants was investigated. Ripening was determined in terms of changes ...