biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 17:231-234, 1975 | DOI: 10.1007/BF02920844

Flower promoting effect of 2-chloroethylphosphonic acid in apple trees

S. Schmidt1, M. Katzfuss1, T. Buban2
1 Institut für Obstforschung der Akademie der Landwirtschaftswissenschaften der DDR, Dresden-Pillnitz
2 Kertészeti Kutató Intézet, Kutató Allmása, Ujfehértó, Ungarn

Experiments with the growth regulator ethephon (2-chloroethylphosphonic acid) were made to stimulate the flower differentiation in the 'Carola' and 'Golden Delicious' apple cultivars in Pillnitz (GDR) and 'Jonathan' and 'Golden Delicious' in Ujfehértó (Hungaria). A twofold application of 150 ppm ethephon in June proved most effective. Our results indicate that it is possible to promote flower differentiation in apple trees without growth retardation and fruit thinning.

Received: October 29, 1974; Published: May 1, 1975  Show citation

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Schmidt, S., Katzfuss, M., & Buban, T. (1975). Flower promoting effect of 2-chloroethylphosphonic acid in apple trees. Biologia plantarum, 17(3), 231-234. doi: 10.1007/BF02920844
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