paclobutrazol in olive trees under different water levels
paclobutrazol em oliveira submetida a diferentes regimes hídricos

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ID: 174904
2012
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Abstract
Adaptation of olive cultivars to climatic conditions of some regions in Brazil has attracted the interest of producers for their cultivation. However, for the expansion of production areas it is necessary to study the factors that influence growth and reproduction of the species. The aim of this research was to evaluate the vegetative growth of olive trees and their reproductive performance when submitted to paclobutrazol application (PBZ) under different conditions of water availability (WA). The experiment was set in 4 x 2 x 2 factorial scheme, with randomized blocks, three replications, and two plants per plot. Three-year-old cv. Arbequina olive trees were submitted to four PBZ doses (0.0; 2.0; 4.0 and 8.0 g per plant), two application forms (in soil and foliar) and two levels of WA. PBZ was effective to slow the plants growth in both forms applied. When PBZ was applied in the soil its action in the plants was slow. Water stress favored the paclobutrazol action in plants when applied in leaves but when the PBZ was applied to the soil its performance was slow in the plants. In the studied conditions there was no olive tree flowering with Paclobutrazol and water deficit.

A adaptação de cultivares de oliveiras às condições climáticas de algumas regiões no Brasil tem despertado o interesse de produtores para o seu cultivo. Entretanto, para a expansão das áreas produtoras torna-se necessário estudar os fatores que interferem no crescimento e na reprodução da espécie. Assim, o presente trabalho foi realizado com o objetivo de avaliar o crescimento vegetativo e o comportamento reprodutivo da oliveira submetida à aplicação de paclobutrazol (PBZ) sob condições diferentes de disponibilidade hídrica (DH). Foi utilizado o esquema fatorial 4 x 2 x 2, em blocos casualizados, com três repetições e duas plantas por parcela. Plantas da variedade Arbequina, com três anos, foram submetidas à aplicação de quatro doses de PBZ (0,0; 2,0; 4,0 e 8,0 g por planta), duas formas de aplicação (no solo e pulverização foliar) e dois regimes de DH (com e sem restrição hídrica). O PBZ foi efetivo para retardar o crescimento das plantas em ambas as formas aplicadas. Quando o PBZ foi aplicado no solo sua atuação na planta ocorreu de forma lenta. O déficit hídrico favoreceu a ação do PBZ na planta quando aplicado via foliar e retardou quando a aplicação foi realizada no solo. Não foi observado o florescimento da oliveira com a aplicação de paclobutrazol e déficit hídrico nas condições estudadas.

Reference Key
oliveira2012semina:paclobutrazol Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Adelson Francisco de Oliveira;Maria do Céu Monteiro Cruz;Dili Luiza de Oliveira;Hugo Adelande de Mesquita
Journal frontiers in neuroendocrinology
Year 2012
DOI
DOI not found
URL
http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/7997
Keywords
Agriculture (General) manejo

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