&lt;b&gt;Nutritional status, yield and composition of peach fruit subjected to the application of organic compost

Melo, G. W. B. de; Sete, Paula Beatriz; Ambrosini, Vítor Gabriel; Freitas, Rafael Fernando; Basso, Alex; Brunetto, Gustavo

doi:10.4025/actasciagron.v38i1.25638

Cited by 11 publications

(9 citation statements)

References 23 publications

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“…The tendency for both compost and mulch to increase leaf K was also documented by Marsh et al (1996) in organic apple. Although Toselli et al (2012) and de Melo et al (2016) found no effect of compost on the nutrient content of peach leaves despite increased yields.…”

Section: Tree Leaf Nutrientsmentioning

confidence: 89%

Establishing peach trees for organic production in Utah and the Intermountain West

Reeve

Culumber²,

Black

et al. 2017

Scientia Horticulturae

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Adequate weed control and nutrient supply are critical for successful establishment of fruit trees. This is of particular concern in organic orchard establishment. In order to determine the best approach for establishing peach trees (Prunus persica L.) organically in climates characterized by hot dry summers and cold winters such as the North American Intermountain West, seven organic and three integrated and conventional treatment combinations were established in two first leaf orchards at the USU Kaysville Research Farm, Utah, in 2008 and 2009. Treatments consisted of different tree-row and alleyway mulch and fertilizer combinations.

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Section: Tree Leaf Nutrientsmentioning

confidence: 89%

Establishing peach trees for organic production in Utah and the Intermountain West

Reeve

Culumber²,

Black

et al. 2017

Scientia Horticulturae

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“…Amino acids (arginine, asparagine, isoleucine, lysine, serine, threonine, valine, leucine, phenylalanine, tryptophan, tyrosine, proline, and alanine) also contribute to the flavour of fruit and are found in peaches in different concentrations depending on the cultivar [15,16]. Among the mineral elements, they contain nitrogen, phosphorus, potassium, calcium, magnesium, iron, manganese, zinc, cooper, chromium, nickel, cobalt, lead, selenium, and fluoride [17,18]. Similar to apricots, the glycoside amygdalin (26%), protein amandine (3.8%), enzymes, lactase, and oleic acids are present in peach kernels.…”

Section: Introductionmentioning

confidence: 99%

Determination of Selected Beneficial Substances in Peach Fruits

et al. 2021

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Peaches (Prunus persica L.) are a popular and sought-after dessert fruit. This is mainly due to their flavour, aroma, attractive appearance, and high content of substances that play an important role in human nutrition. The present study was carried out to determine some important analytical properties (sugars/sucrose, glucose, fructose and sorbitol), total acid, total phenolics, flavonoids, antioxidant capacity, carotenoids and anthocyanins of 34 selected peach varieties. The analyses are also complemented by colorimetric measurements of peach skin colour using CIELAB and other chromatic parameters. The results show, for example, that all peach varieties are good sources of phenolic compounds (9.43–577 mg gallic acid equivalent (GAE).100 g−1), flavonoids (1.12–95.1 mg catechin equivalent (CAE).100 g−1), and antioxidant capacity (136–462 mg Trolox equivalent (TE).100 g−1).

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“…Epidermis and flesh firmness, fruit hue, chroma, TSS, TTA and total antioxidant activity were modelled as target variables. True negative specimens were outnumbered (10)(11)(12)(13)(14)(15)(16)(17) for carotenoids and phenolic compounds in order to derive foliar nutrient standards at high target levels. The number of true negative specimens (32-59) sufficed for most target variables to compute nutrient standards.…”

Section: Fruit Yield and Quality Impacted By Key Features In Machine Learning Modelsmentioning

confidence: 99%

“…Fertilization, mainly with nitrogen (N), has impact on the composition of foliar nutrients, as well as on peach yield and quality [12][13][14][15][16][17]. Nitrogen fertilization extends the fruit development period, and it explains these fruits' capacity to sink carbohydrates and nutrients [18].…”

Section: Introductionmentioning

confidence: 99%

Esmeralda Peach (Prunus persica) Fruit Yield and Quality Response to Nitrogen Fertilization

Nava

Júnior

Parent

et al. 2022

Plants

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‘Esmeralda’ is an orange fleshed peach cultivar primarily used for juice extraction and secondarily used for the fresh fruit market. Fruit yield and quality depend on several local environmental and managerial factors, mainly on nitrogen, which must be balanced with other nutrients. Similar to other perennial crops, peach trees show carryover effects of carbohydrates and nutrients and of nutrients stored in their tissues. The aims of the present study are (i) to identify the major sources of seasonal variability in fruit yield and qu Fruit Tree Department of Federal University of Pelotas (UFPEL), Pelotas 96010610ality; and (ii) to establish the N dose and the internal nutrient balance to reach high fruit yield and quality. The experiment was conducted from 2014 to 2017 in Southern Brazil and it followed five N treatments (0, 40, 80, 120 and 160 kg N ha−1 year−1). Foliar compositions were centered log-ratio (clr) transformed in order to account for multiple nutrient interactions and allow computing distances between compositions. Based on the feature ranking, chilling hours, degree-days and rainfall were the most influential features. Machine learning models k-nearest neighbors (KNN) and stochastic gradient decent (SGD) performed well on yield and quality indices, and reached accuracy from 0.75 to 1.00. In 2014, fruit production did not respond to added N, and it indicated the carryover effects of previously stored carbohydrates and nutrients. The plant had a quadratic response (p < 0.05) to N addition in 2015 and 2016, which reached maximum yield of 80 kg N ha−1. In 2017, harvest was a failure due to the chilling hours (198 h) and the relatively small number of fruits per tree. Fruit yield and antioxidant content increased abruptly when foliar clrCu was >−5.410. The higher foliar P linearly decreased total titratable acidity and increased pulp firmness when clrP > 0.556. Foliar N concentration range was narrow at high fruit yield and quality. The present results have emphasized the need of accounting for carryover effects, nutrient interactions and local factors in order to predict peach yield and nutrient dosage.

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<b>Nutritional status, yield and composition of peach fruit subjected to the application of organic compost

Cited by 11 publications

References 23 publications

Establishing peach trees for organic production in Utah and the Intermountain West

Establishing peach trees for organic production in Utah and the Intermountain West

Determination of Selected Beneficial Substances in Peach Fruits

Esmeralda Peach (Prunus persica) Fruit Yield and Quality Response to Nitrogen Fertilization

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