Articles

PEAR TREE SHOOT GROWTH PATTERNS IN RELATION TO CHEMICAL CONTROL OF VEGETATIVE GROWTH WITH PROHEXADIONE-CALCIUM (APOGEE®)

Article number
596_122
Pages
711 – 716
Language
English
Abstract
Prohexadione-Ca (P-Ca, Apogee®, BASF) applications to pear trees in Oregon and Washington States, USA effectively controlled shoot growth where untreated trees produced only a single, uninterrupted shoot growth flush during the growing season.
Where a second growth flush occurred following a period of quiescence in untreated trees, regrowth in P-Ca – treated trees was sufficient to eliminate growth differences between treated and untreated trees by the end of the growing season in most treatments.
In addition to the “normal” pattern of growth, four distinctly different patterns of shoot growth were observed in untreated trees over two years of study.
These patterns and their effects on control of shoot growth with P-Ca are described.

Publication
Authors
D.C. Elfving, D. Sugar, D. Faubion
Keywords
plant growth regulators, bioregulators, vegetative growth, Pyrus communis
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