Original scientific paper
Inducement of Sylleptic Shoots in Apple in the Fruit-tree Nursery
Zlatko Čmelik
Stanislav Tojnko
Abstract
The ability of various treatments to induce sylleptic shoot development in nursery trees of the apple ‘Jonagold’ and ‘Golden Delicious’ on rootstock M.9 was investigated. The leader management techniques were: removal of sub-terminal leaves, removal of sub-terminal leaves with application of 0.25% Paturyl 10 WSC, and treatment with 0.25% Paturyl 10 WSC (two times at 24 days interval); application of 20% Promalin (GA4+7) two times in 9 days interval; and control, starting when scion length was 75 cm. Removal of sub-terminal leaves increased total branch length, but did not stimulate the lateral branching. Treatments with Paturyl resulted in the lower tree height, in the higher number of branches, and in the greater branch length. Removal of sub-terminal leaves in combination with Paturyl increased the lateral shoot number more than the treatment with only Paturyl. Promalin increased branching, but had little influence on the total branch length. In addition, Promalin decreased branch crotch angles.
Keywords
apple nursery tree; branch inducement; removal of sub-terminal leaves; Paturyl; Promalin
Hrčak ID:
1936
URI
Publication date:
1.10.2005.
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