%0 Journal Article
%T Effects of different pH sprays on the efficiency of prohexadione-Ca in sweet cherry trees
%A Tadeusz Jacyna
%A Wies aw W¨®jcik
%A Tomasz Lipa
%J Folia Horticulturae
%@ 2083-5965
%D 2011
%I 
%R 10.2478/v10245-011-0007-4
%X In 2003 and 2004, young ˇ®KordiaˇŻ sweet cherry trees were sprayed with prohexadione-Ca (Pro-Ca) to control tree growth and stimulate flower bud setting. A rate of 200 mg Pro-Ca l-1 ˇÁ 2 dissolved in various pH-buffered (6.0-4.5) aqueous solutions was used. Regardless of the acidity of the spray solution applied, the trees treated with Pro-Ca were characterised by reduced shoot and internode length, greater number of shoots (2003) and increased total shoot extension (2004) relative to the control. In both years, Pro-Ca applied in a pH-4.5 buffer solution contributed to an increase of flower bud clusters on current-season shoots. However, there were no significant differences among Pro-Ca/pH treatments either in the vegetative or generative characteristics studied. Two years after Pro-Ca application, no residual effects were found in the studied tree characteristics.
%K acidification
%K bioregulators
%K current-season shoot
%K flower bud
%K growth retardation
%K Regalis
%U http://versita.metapress.com/content/p8q767284l796840/?p=265ea31675284c78b15cab8bb6baf4b5&pi=6