‘Hass’ Avocado Internal Disorders under Simulated Export Conditions and Its Relationship with Flesh Mineral Content and Preharvest Variables

Escobar, Johanna V.; Cortés, Misael; Correa, Guillermo; Rondon, Tatiana; Fonseca, Pablo Emilio Rodríguez

doi:10.3390/horticulturae7040077

Cited by 8 publications

(8 citation statements)

References 20 publications

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“…The Ca contained in the fruit is accumulated during the first five months of development, because it moves towards the actively growing cells (Salvo, 2017), it may explain why Ca concentrations were lower from fruit measuring 65 to 70 mm until the beginning of harvest. Escobar et al (2021) found high content of calcium in fruits associated to reduced avocado flesh disorders and improved the internal fruit quality.…”

Section: Calcium Nutritional Dynamicsmentioning

confidence: 90%

Macronutrient dynamics in avocado (Persea americana Mill.) ‘Hass’ under the central peruvian coast conditions

Tomassini-Vidal

Pino-Huasacca²

2022

PJA

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The international growing demand of the avocado (Persea americana Mill.) market, together with the expansion of its agricultural area, requires the increasing of its technification, which makes necessary to have information aboutnutrient absorption in relation to its phenology. Therefore, an experiment was conducted in a commercial avocado production field of the farm “Don Ricardo” located on the central coast of Peru, in order to characterize the dynamics of macronutrients (N, P, K, Ca and Mg). The methodology followed and the results obtained will be the main guide to improve and implement more efficient fertilization strategies that will lead to higher yields and lower production costs in this crop. The experiment included 5 production cycles, from 2014-15 to 2018-19, in 7 phenological stages, collecting according to the crop development, leaves, panicles and fruits. 40 randomized plants were selected from a total of 50 plants marked as sampling area. The results were analyzed using a descriptive statistic, with box diagrams of the concentration of each nutrient by phenological stage. Two graphs per element were generated to represent the leaf dynamic and the fruit dynamic, respectively, including the data taken from the flower. It was concluded that the highest nutrient requirements of avocado were during the flowering, the fruit set and in fruits from 10 mm to 30 mm in diameter. The most abundant form of nitrogen was nitric, and it was accumulated mainly in the productive organs. The phosphorus, potassium, calcium and magnesium concentrations decreased as the fruit grew, and calcium and magnesium concentrations in leaves were higher than in fruits.

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Section: Calcium Nutritional Dynamicsmentioning

confidence: 90%

Macronutrient dynamics in avocado (Persea americana Mill.) ‘Hass’ under the central peruvian coast conditions

Tomassini-Vidal

Pino-Huasacca²

2022

PJA

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“…The postharvest quality affects consumer perceptions when purchasing or repurchasing avocado fruit [77]. High boron concentrations in the flesh can reduce the incidences of flesh discoloration, vascular browning and body rot [25]. Furthermore, boron provides health benefits such as improving bone formation and maintenance, facilitating insulin action, increasing glucose metabolism and alleviating arthritis symptoms [78,79].…”

Section: Discussionmentioning

confidence: 99%

“…Agronomy 2022, 12, 1479 2 of 15 Nutrient allocation within the tree during the later stages of fruit development also affects the quality of mature fruit, as the levels of nutrients such as boron, calcium, magnesium and nitrogen can influence the size, taste and postharvest quality of fruit [6,18,25].…”

Section: Introductionmentioning

confidence: 99%

“…Foliar application of boron to other mass-flowering tree crops such as almond, apple and citrus can increase the fruit size and improve fruit quality by intensifying the colour, increasing the total soluble solid concentrations and acidity and reducing the incidence of postharvest disorders [54][55][56]. Foliar or soil boron applications both increase fruit size in boron-deficient avocado trees [57][58][59], and high boron levels in avocado fruit are associated with improved postharvest quality, including a reduced incidence of flesh disorders and vascular browning [25,60]. However, there is currently limited knowledge on the effects of soil boron applications on avocado flesh nutrient concentrations and fatty acid composition.…”

Section: Introductionmentioning

confidence: 99%

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Boron Effects on Fruit Set, Yield, Quality and Paternity of Hass Avocado

et al. 2022

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Boron plays a critical role in pollination and fertilization and can affect fruit set and yield. We applied 0 g, 15 g (manufacturer recommendation) or 30 g boron pre-flowering to Hass avocado trees to determine the effects on fruit set, fruitlet paternity, yield, fruit size, mineral nutrient concentrations and fatty acid composition. The boron applications did not significantly affect the initial fruit set at 3 or 6 weeks after peak anthesis or the proportions of self-pollinated fruitlets or mature fruit. Approximately 88–92% of the mature fruit were self-pollinated. However, applying 30 g boron per tree reduced the fruit set at 10 weeks after peak anthesis by 56% and the final yield by 25%. Attaining > 90% of the maximum yield was associated with foliar boron concentrations being below 104 mg/kg at 6 weeks after peak anthesis and between 39 and 68 mg/kg at 28 weeks after peak anthesis. Applying 15 g boron per tree increased the fruit mass by 5%, fruit diameter by 2%, flesh mass by 9%, flesh boron concentration by 55%, and the relative abundance of unsaturated fatty acids by 1% compared with control trees. Applying the recommended amount of boron provided a good yield of high-quality avocado fruit but applying boron at double the recommended rate reduced the yield.

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“…The analysis was performed following the procedure published by Escobar et al [20]. Briefly, the flesh was dried at 70 • C in a forced convection oven (Memmert UF 110) until a constant weight was attained.…”

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confidence: 99%

Fatty Acids and Minerals as Markers Useful to Classify Hass Avocado Quality: Ripening Patterns, Internal Disorders, and Sensory Quality

et al. 2023

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Hass avocado quality varies by origin, season, and production practices. However, there is a lack of methodologies to guarantee that fruit reaching the market has consistent quality. The aim of this work was to identify predictive markers for quality management. Fruit samples produced under different nutrient management, elevation, date-to-harvest, and growth cycle conditions were analyzed. Dry matter, oil content, internal disorders, sensory attributes, minerals, and fatty acids were evaluated as quality variables. The results highlighted soil and weather differences among orchards. Nutrient management practices based on index balancing in some samples increased both productivity and fruit size. High variability was observed in the dry matter related to the age of the fruit at harvest. Ripening heterogeneity was very large in low-elevation orchards where the fruit was picked relatively early. High flesh mineral contents delayed fruit ripening. At low growing temperatures, more oleic and linoleic acids were present in fruits. The sensory texture and taste descriptors were affected by the fruit age and related to the flesh composition. Logistic, PLS-DA, and biplot models effectively represented the variabilities in the ripening pattern, composition, and sensory profile of avocado fruits and allowed the samples to be grouped according to the internal fruit quality.

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‘Hass’ Avocado Internal Disorders under Simulated Export Conditions and Its Relationship with Flesh Mineral Content and Preharvest Variables

Cited by 8 publications

References 20 publications

Macronutrient dynamics in avocado (Persea americana Mill.) ‘Hass’ under the central peruvian coast conditions

Macronutrient dynamics in avocado (Persea americana Mill.) ‘Hass’ under the central peruvian coast conditions

Boron Effects on Fruit Set, Yield, Quality and Paternity of Hass Avocado

Fatty Acids and Minerals as Markers Useful to Classify Hass Avocado Quality: Ripening Patterns, Internal Disorders, and Sensory Quality

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