Effect of crop load on fruit ripening and olive oil (<i>Olea europea</i>L.) quality

Barone, Ettore; Gullo, G.; Zappia, Rocco; Inglese, Paolo

doi:10.1080/14620316.1994.11515250

Cited by 51 publications

(35 citation statements)

References 9 publications

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“…Meanwhile, the delay of maturation stage by the application of SA and KL was closely associated with the higher fruit yield. Similar relationship between crop load and fruit ripening was previously verified (Barone et al, 1994).…”

Section: Tablesupporting

confidence: 60%

Kaolin and salicylic acid foliar application modulate yield, quality and phytochemical composition of olive pulp and oil from rainfed trees

Brito

Dinis

Silva

et al. 2018

Scientia Horticulturae

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Olive orchards, rainfed managed, are threatened by the current and predicted adverse environmental conditions, which change the yield and quality of olive products, largely known for its benefits to human health. To mitigate these problems, it is highly recommended to perform some adjustments in agronomic practices, such as the use of foliar sprays that cloud help the trees to cope with climate change. During two consecutive years, olive trees were pre-harvest sprayed with kaolin (KL) and salicylic acid (SA) to attenuate the adverse effects of summer stress. Olive yield was increased by 97% and 72% with KL and SA, respectively. Phenolics and antioxidant capacity of both olives and olive oil increased and decreased in the first and second year, respectively, in a closely association with the prevailing climatic conditions. The foliar sprays did not significantly affect the oil quality indices, free acidity, peroxide value and K 232 coefficient and decreased the K 270 coefficient. This study strongly suggests that the applied products might be effective in mitigating the adverse environmental conditions, without substantial changes in fruit and olive oil quality.

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Section: Tablesupporting

confidence: 60%

Kaolin and salicylic acid foliar application modulate yield, quality and phytochemical composition of olive pulp and oil from rainfed trees

Brito

Dinis

Silva

et al. 2018

Scientia Horticulturae

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“…In olive, alternate bearing has a strong effect on fruit weight (Hartmann, 1952;Lavee and Spiegel-Roy, 1967;Troncoso et al, 1978). Fruit number and size are often negatively correlated (Barone et al, 1994; ger sink than the mesocarp, in accordance with previous studies (Rapoport et al, 2004), perhaps because endocarp development is linked to survival of the embryo. Proietti (2000) reported no clear correlation between heavy fruit load and photosynthesis effi ciency, concluding that the depletion of carbohydrate reserves during an "on" year could negatively infl uence new leaves and thus fl ower bud formation.…”

Section: Resultssupporting

confidence: 77%

Improvement in yield and fruit size and quality of the main Italian table olive cultivar 'Nocellara del Belice'

Barone

Mantia

Marchese

et al. 2014

Sci. agric. (Piracicaba, Braz.)

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Olive (Olea europaea L.) shows alternate bearing, with unreliable cropping patterns and inconsistent fruit size and quality every year. In many countries, thinning with naphthaleneacetic acid (NAA) is used to minimise alternate bearing behavior in olives. However, in Italy, growers are reluctant to employ this practice and no detailed knowledge is available for specifi c cultivars. We evaluated the effects of spraying NAA on various dates on the productive and vegetative characteristics of the main Italian table olive cultivar 'Nocellara del Belice'. Trunk cross-sectional area, fruit set, fruit drop, fruit size, pit size, yield per tree, crop density and fl esh to pit ratio were analysed. The NAA treatment applied on the earliest of the dates selected increased fruit weight and fl esh to pit ratio, by reducing crop density and enhancing the leaf to fruit ratio, without reducing yield. Two distinct negative relationships were found between fruit weight and crop density during "on" and "off" years, but a unique relationship between pit weight vs. crop density in both years, suggested that the pit is the strongest sink. Fruit size and quality of 'Nocellara del Belice' can be enhanced by NAA application, thereby increasing economic returns in the "on" year.

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“…This can be explained by the higher crop load of the trees in the irrigated treatments that retard fruit maturation and anthocyanin accumulation. In fact, several studies have shown that a low crop load hastens and shortens fruit ripening (Barone et al, 1994).…”

Section: Oxidative Stabilitymentioning

confidence: 99%

Effect of different irrigation regimes on the quality attributes of monovarietal virgin olive oil from cv. “Cobrançosa”

Silva

Gouveia²,

Vasconcelos³

et al. 2013

Grasas y Aceites

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RESUMEN Efecto de diferentes regímenes de riego sobre los índices de calidad del aceite de oliva de cv. "Co brançosa"El objetivo del estudio fue evaluar el efecto de distintas estrategias de riego en la composición y la calidad del aceite de oliva virgen de cv. Cobrançosa, integrado en una denominación de origen protegida de «Azeite de Trás-osMontes», en el noreste de Portugal. Tres tratamientos de riego fueron aplicados: T2-riego total, el olivo recibió el equivalente estacional de agua al 100% de la evapotranspiración estimada del cultivo (ETc), T1-riego continuo deficitario (30% de la ETc) y el tratamiento T0-de secano. Los datos fueron recolectados a partir de dos campañas agrícolas consecutivas (2005)(2006). Los regímenes de riego tuvieron un efecto menor en los índices de calidad estándar (ácidos grasos libres, índice de peróxidos, K 232 y K 270 ) del aceite de oliva y en la composición de ácidos grasos. Los polifenoles totales disminuyeron hasta el tratamiento T2, y se relacionaron fuertemente con el integral de estrés hídrico, lo que sugiere que el efecto del riego sobre esta variable se produce a lo largo de la temporada de cultivo y no sólo durante la fase de acumulación de aceite. Una estrategia de riego deficitario continuo con sólo 30% de la ETc máxima puede tener un efecto beneficioso, ya que aumentó la producción de aceite de oliva a más del doble que en condiciones de secano, mientras que la calidad del aceite de oliva fue similar. PALABRAS CLAVE: Aceite de oliva virgen -cv. Cobrançosa -Índices de calidad -Riego. ABSTRACT Effect of different irrigation regimes on the quality attributes of monovarietal virgin olive oil of cv. "Cobrançosa"The aim of this study was to assess the effect of different irrigation strategies in virgin olive oil (VOO) composition and quality of cv. Cobrançosa, integrated in a protected denomination of origin of "Azeite de Trás-os-Montes" in the Northeast of Portugal. Three irrigation treatments were applied: T2-full irrigation that received a seasonal water equivalent to 100% of estimated crop evapotranspiration (ET c ), T1-continuous deficit irrigation (30% ET c ) and T0-rainfed treatment. Data were collected from two consecutive crop years (2005)(2006). Irrigation regimes had a minor effect on standard quality indices (free fatty acids, peroxide value, K 232 and K 270 ) of VOO and in fatty acid composition. Total polyphenols decreased up to treatment T2, and were strongly related to the water stress integral, suggesting that the effect of irrigation on this variable occurs along the crop season and not just during the oil accumulation phase. A strategy of continuous deficit irrigation with only 30% of maximum ETc may have an advantageous effect, as it increased oil yield to more than double that of rainfed conditions while VOO quality was similar.

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Effect of crop load on fruit ripening and olive oil (Olea europeaL.) quality

Cited by 51 publications

References 9 publications

Kaolin and salicylic acid foliar application modulate yield, quality and phytochemical composition of olive pulp and oil from rainfed trees

Kaolin and salicylic acid foliar application modulate yield, quality and phytochemical composition of olive pulp and oil from rainfed trees

Improvement in yield and fruit size and quality of the main Italian table olive cultivar 'Nocellara del Belice'

Effect of different irrigation regimes on the quality attributes of monovarietal virgin olive oil from cv. “Cobrançosa”

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