Distribution in plant ,substrate and leachate of paclobutrazol following application to containerized Nerium oleander L.seedlings
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AuthorOchoa Rego, Jesús; Franco Leemhuis, José Antonio; Bañón Arias, Sebastián del Pilar; Fernández Hernández, Juan Antonio
Research GroupGrupo de Investigación de Hortofloricultura Mediterránea
Knowledge AreaProducción Vegetal
SponsorsThis research was supported by CICYT projects(AGL2005-05588-C02-1 and AGL2005-05588-C02-2)and by the Consejería de Agricultura y Agua de la Región de Murcia,program (UPCT-CEBAS-IMIDA 2005).
PublisherSpanish National Institute for Agricultural and Food Research and Technology
Bibliographic CitationOCHOA, J., FRANCO, J.A., BAÑÓN, S., FERNÁNDEZ, J.A. Distribution in plant ,substrate and leachate of paclobutrazol following application to containerized Nerium oleander L.seedlings. Spanish Journal of Agricultural Research , 7 (3): 621-628, 2009. ISSN 1695-971-X
[ENG]Paclobutrazol(PBZ)is a retardant often used in potted ornamental plants to control their growth and compactness. The distribution in plant,substrate and leachate of PBZ applied to containerized oleander seedlings were studied after a single liquid drench application to the substrate surface(20mga.i.perplant) in a nursery dedicated to pot production in SE Spain. PBZ significantly reduced all growth parameters, providing more compact plants of good commercial value and confirming its ability to reduce the vertical growth of native oleander in the nursery. The level of PBZ residues in leaves washigh-erat the end of pot cultivation (156 days post PBZ application) than at the first sampling time(30 days after PBZ applica-tion), where as the level in stems decreased for the same period of time. PBZ residues in roots remained constant during the experimental period. The high level of PBZ residues detected in the substrate 30 days after application had decreased significantly(by67%) by the ...
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