Effects of some growth regulators on the fresh and dry yield of Zante currant (<i>Vitis vinifera</i> var.)

Authors

  • B. M. El-Zeftawi Department of Agriculture, Mildura, Victoria
  • H. I. Weste Department of Agriculture, Mildura, Victoria

DOI:

https://doi.org/10.5073/vitis.1970.9.47-51

Abstract

The results of two trials with Zante currant vines (Vitis vinifera var. Zante currant, Black Corinth) are reported. Trial I was for two seasons on ten-year-old vines which had never been cinctured (girdled) but until this trial had been sprayed with GA Y. ppm+ PCPA 20 ppm at full bloom. Trial II was for one season only on forty-year-old vines which had been cinctured up to 1960, then sprayed with GA Ye ppm+ PCPA 20 ppm at full bloom until this trial. In the first trial GA at 1 ppm + CCC at 100 ppm applied at full bloom increased the yield of dried fruit over two seasons by 37 per cent and 32 per cent compared with GA at 1 ppm+ PCPA at 20 ppm and GA at 1 ppm respectively, while maintaining acceptable berry size and sugar content. The second trial suggests that this increase in yield is largely due to an increase in the number of berries per bunch with GA+ CCC at the concentrations used here. There was little difference between overall sprays and bunch-directed sprays.

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Published

2017-02-17

Issue

Vol. 9 No. 1 (1970): Vitis

Section

Article

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