Efficiency of benzyladenine (MacCel®) for crop load regulation in apple trees

Crop load regulation is necessary in order to achieve an optimal apple quality and a regular production. This regulation is performed using chemical thinning products. Since the beginning of 2008, the new product MaxCel® (benzyladenine or BA) is registred in Switzerland for apple thinning. The aim o...

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Veröffentlicht in:	Revue suisse de viticulture, arboriculture, horticulture arboriculture, horticulture, 2008-11, Vol.40 (6)
Hauptverfasser:	Widmer, A, Gölles, M., Station de recherche Agroscope Changins-Waedenswil ACW, Waedenswil (Switzerland), Christen, D
Format:	Artikel
Sprache:	fre
Schlagworte:	6-BENZILADENINA 6-BENZYLADENINE APPLES ARBOLES FRUTALES ARBRE FRUITIER DATE DE TRAITEMENT DEFRUITING EXPERIMENTACION EN CAMPO EXPERIMENTATION AU CHAMP FECHA DE TRATAMIENTO FIELD EXPERIMENTATION FRUIT TREES http://www.fao.org/aos/agrovoc#c_15292 http://www.fao.org/aos/agrovoc#c_27921 http://www.fao.org/aos/agrovoc#c_3128 http://www.fao.org/aos/agrovoc#c_32701 http://www.fao.org/aos/agrovoc#c_33990 http://www.fao.org/aos/agrovoc#c_541 http://www.fao.org/aos/agrovoc#c_754 MANZANA POMME SUPPRESSION DE FRUITS SUPRESION DE FRUTOS TEMPS METEOROLOGIQUE TIEMPO METEOROLOGICO TREATMENT DATE WEATHER
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Zusammenfassung:	Crop load regulation is necessary in order to achieve an optimal apple quality and a regular production. This regulation is performed using chemical thinning products. Since the beginning of 2008, the new product MaxCel® (benzyladenine or BA) is registred in Switzerland for apple thinning. The aim of this study was to assess the efficiency of this new tool on several apple cultivars. Generally, benzyladenine permitted to thin correctly, but its efficiency was highly dependant on climatic conditions and cultivars. Futhermore, when cultivars or orchards were difficult to thin, it was favourable to mix MaxCel® with Rhodofix® (_-naphthylacetic acid), but the thinning effect could be often excessive when using this mix. Another trial showed that the application could occur when the central fruit presented a size of 7 to 15 mm. This large application window and the availability of a new active substance make it possible to optimize thinning strategies for apples.
ISSN:	0375-1430