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EFFECT OF DIPHENYLAMINE (DPA) EMULSIFIABLE CONCENTRATES ON THE DEVELOPMENT OF CORE ROT IN STARKING APPLES.

Author(s) : COMBRINK J. C., GROBBELAAR C., VISAGIE T. R.

Summary

TO STUDY THE EFFECT OF DPA TREATMENT ON THE DEVELOPMENT OF WET CORE ROT, STARKING APPLES WERE DUMPED INTO A PENICILLIUM EXPANSUM SPORE SUSPENSION TO INCREASE THE ROT POTENTIAL, CHLORINATED AND THEN TREATED WITH DIFFERENT DPA WETTABLE POWDER AND EMULSIFIABLE CONCENTRATE FORMULATIONS, WITH AND WITHOUT THIABENDAZOLE. IN ONE EXPERIMENT, THE INCIDENCE OF CORE ROT INCREASED SIGNIFICANTLY WHEN APPLES WERE TREATED WITH A DPA EMULSION. HOWEVER, CHLORINATION AND THIABENDAZOLE TREATMENTS, LIMITED THE DEVELOPMENT OF WET CORE ROT. WET CORE ROT WILL NOT DEVELOP IN APPLES TREATED WITH A DPA EMULSION IF THE FRUIT IS CHLORINATED DIRECTLY AFTER HARVEST AND IF A SUITABLE FUNGICIDE IS MIXED WITH THE DPA.

Details

  • Original title: EFFECT OF DIPHENYLAMINE (DPA) EMULSIFIABLE CONCENTRATES ON THE DEVELOPMENT OF CORE ROT IN STARKING APPLES.
  • Record ID : 1987-1365
  • Languages: English
  • Publication date: 1986/04/14
  • Source: Source: Frigair '86, Pretoria
    vol. 3; n. 7; 5 p.; 3 tabl.; 15 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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