Articles
EFFECTS OF ALTERNATIVES TO HYDROGEN CYANAMIDE ON COMMERCIAL ‘HORT16A’ KIWIFRUIT PRODUCTION
Article number
1096_9
Pages
109 – 115
Language
English
Abstract
The restriction of Hydrogen Cyanamide (HC) for dormancy interruption of Kiwifruit in the European Union leads to a concern among many New Zealand growers, who wonder about how long the product will be available in their market.
A completely randomized block experiment in Auckland region compares the performance of two available alternative dormancy breaking treatments of Zespri® gold kiwifruit (Actinida chinensis Planch. Hort16A), Erger® (ER) and Armobreak® (AB) with HC Hi Cane® and with the untreated control, during two years of diverse winter chill, from 510 h below 7°C of the 2010 winter to only 301 of the 2011 winter. Hort16A kiwifruit shows low sensitivity to different levels of winter chill exposure.
Either after an average or a mild chilling, the alternatives to HC improved the %BB and KFl/WB of the control and HC, especially if applied at a late date, nearer to the Date of Natural Budbreak (DNB).
A completely randomized block experiment in Auckland region compares the performance of two available alternative dormancy breaking treatments of Zespri® gold kiwifruit (Actinida chinensis Planch. Hort16A), Erger® (ER) and Armobreak® (AB) with HC Hi Cane® and with the untreated control, during two years of diverse winter chill, from 510 h below 7°C of the 2010 winter to only 301 of the 2011 winter. Hort16A kiwifruit shows low sensitivity to different levels of winter chill exposure.
Either after an average or a mild chilling, the alternatives to HC improved the %BB and KFl/WB of the control and HC, especially if applied at a late date, nearer to the Date of Natural Budbreak (DNB).
Publication
Authors
G. Hernández, R. Craig
Keywords
kiwifruit, Actinida chinensis, budbreak, flowering, hydrogen cyanamide, HiCane®, Dormex®, ArmobreakTM, Erger®
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