scholarly journals Preharvest calcium sprays were not always needed to improve quality of 'gala' apples in Brazil

2008 ◽  
Vol 30 (4) ◽  
pp. 892-896 ◽  
Author(s):  
Paulo Roberto Ernani ◽  
Jaques Dias ◽  
Cassandro Vidal Talamini do Amarante ◽  
Diorvânia Cardoso Ribeiro ◽  
Douglas Antonio Rogeri
Keyword(s):  
Titratable Acidity ◽  
Weather Conditions ◽  
Soluble Solids ◽  
Average Weight ◽  
Maturity Level ◽  
Physiological Disorder ◽  
Set Up ◽  
Leaf Composition ◽  
Pattern Index

Calcium sprays have normally improved both the quality and the storage life of apples throughout the world because Ca helps to prevent many fruit disorders and that taken up from the soil does not often reach the fruit in adequate amounts. Since the efficacy of Ca sprays varies according to soil, apple cultivar, and weather conditions, this study was carried out from 1998 to 2004, in the Southern of Brazil, in order to assess the effect of Ca sprays on the quality and storability of 'Gala' fruits. The experiment was set up in an orchard planted in 1988, on a density of 1234 trees/ha. Treatments consisted of 0, 4, 8, and 12 annual sprays of 0.5% CaCl2 regularly distributed 30 days after petal fall until one week before harvest. Fruits of the same size and maturity level were annually analyzed at harvest and after five months of conventional cold storage (-1ºC and 90-95% of RH). In five out of six seasons, fruits from all treatments were free of any physiological disorder, and Ca sprays had no effect on leaf composition and on any fruit attribute (soluble solids, titratable acidity, starch pattern index, flesh firmness, and concentrations of N, K, Ca and Mg). In the season of 2000/2001, however, when yield was 18 t ha-1 and fruits had an average weight of 175 g, the incidence of bitter pit plus lenticel blotch pit on stored fruits was 24% in the treatment with no calcium sprays and it decreased up to 2% in that with 12 sprays. Two seasons later, yield was also low (25 t ha-1) and fruits were large (168 g each), but they did not show any physiological disorder regardless of the number of Ca sprays. It seems that the incidence of Ca related disorders in 'Gala' apples grown on limed soils in Brazil with no excess of any nutrient only occurs on seasons with low crop yield, as a result of large fruits and a high leaf/fruit ratio, associated with some unknown environmental conditions.

scholarly journals (331) In Brazil, Preharvest Calcium Sprays Were Not Always Needed to Improve Fruit Quality of `Gala' Apples

HortScience ◽  
2005 ◽  
Vol 40 (4) ◽  
pp. 1066B-1066
Author(s):  
Paulo Roberto Ernani ◽  
Jaques Dias ◽  
Cassandro Vidal Amarante ◽  
Diorvania Ribieiro
Keyword(s):  
Fruit Quality ◽  
Cultural Practices ◽  
Weather Conditions ◽  
Soluble Solids ◽  
Average Weight ◽  
Physiological Disorder ◽  
And Storage ◽  
Leaf Composition ◽  
Pattern Index

Calcium sprays have improved quality and storage life of apples throughout the world as a result of Ca prevention of many fruit physiological disorders. The efficacy of Ca sprays, however, varies according to soil, cultivar/rootstock, orchard cultural practices, and weather conditions. This study was carried out from 1998 to 2004 in southern Brazil in order to assess the effect of Ca sprays on quality of `Gala' fruits in an orchard planted in 1988 on a density of 1234 trees/ha. Treatments consisted of 0, 4, 8, and 12 sprays of 0.5% CaCl2. Fruits of same size and maturity level were annually analyzed at harvest and after 5 months of cold storage. In five out of six seasons, fruits from all treatments were free of any physiological disorder, and Ca sprays had no effect on leaf composition and on fruit quality attributes (soluble solids, acidity, starch pattern index, flesh firmness, and concentrations of N, K, Ca, and Mg). In the 2000–01 season, however, when yield was 18 t·ha-1 and fruits had an average weight of 175 g, the incidence of bitter pit plus lenticel blotch pit on stored fruits decreased from 24% in the treatment with no calcium to 2% in that with 12 calcium sprays. Two seasons later, yield was also light (25 t·ha-1) and fruits were big in size (168 g), but they did not show any disorders regardless of Ca sprays. It seems that the incidence of Ca related disorders in `Gala' apples grown on limed soils in Brazil only occurs in seasons with a light crop load as a result of large fruits and a high leaf/fruit ratio, associated with some unknown climatic factor.

scholarly journals EFFECT OF DIFFERENT K+/CA2+ RATIOS ON YIELD, QUALITY AND PHYSIOLOGICAL DISORDER IN SOILLESS STRAWBERRY CULTIVATION

2019 ◽  
Vol 18 (2) ◽  
Author(s):  
Nafiye Adak
Keyword(s):  
Fruit Quality ◽  
Titratable Acidity ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Physiological Disorder ◽  
Crown Diameter ◽  
Yield And Quality ◽  
Yield Quality ◽  
Nutrient Solutions

The balance of mineral nutrients in plant nutrient solutions has an influence on yield, fruit quality and physiological disorder of strawberries grown in soilless conditions. Nutrient solutions that enhance the yield and quality of plants grown in soilless conditions are optimized through anion-cation equilibrium, optimum K++Ca2+/Mg2+ and K+/Ca2+ ratios. In this study, the effect of three different K+/Ca2+ ratios (5.5/7.0; 5.0/7.0; 6.0/6.0) on some morpho-physiological features (crown diameter, chlorophyll index, leaf temperature), fruit yield, fruit quality (fruit weight, total soluble solids, titratable acidity, ascorbic acid, firmness) and physiological disorder (tip burn) of ‘Albion’ and ‘Festival’ strawberries, were investigated. Results show that increasing K+/Ca2+ ratios significantly accelerated the tip burn incidence. On the other hand, the highest yield, firmness and the lowest tip burn were achieved at 5.5/7.0 ratio of K+/Ca2+ treatment.

scholarly journals Análises físicas, composição centesimal e nutricional de minimilho (Zea mays, L.) orgânico de diferentes variedades

2015 ◽  
Vol 10 (3) ◽  
pp. 49
Author(s):  
A. S. O. D. Lima ◽  
A. R. Melo ◽  
L. F. Oliveira ◽  
V. R. Tolentino ◽  
C. S. V. Branco
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Calorific Value ◽  
Titratable Acidity ◽  
Nutritional Composition ◽  
Soluble Solids ◽  
Average Weight ◽  
Physical Analysis ◽  
Organic Products

<p>Atualmente os produtos orgânicos vêm roubando a cena dos produtos tradicionais, por serem saudáveis, livres de agrotóxicos e por gerarem menor impacto no meio ambiente. O minimilho (<em>Zea mays</em>, L.) também conhecido como “babycorn”, uma espiga imatura ainda não fertilizada (espiguetas), é uma hortaliça, produto considerado fino que vem ganhando importância no mercado de conservas no Brasil. Esta pesquisa se propôs avaliar a qualidade de minimilho orgânico <em>in natura</em> de diferentes variedades e determinar a composição centesimal e nutricional.Utilizou-se como metodologias analíticas as determinações de rendimento, peso médio, diâmetro e comprimento das espiguetas, além de pH, sólidos solúveis, acidez  titulável, umidade, cinzas, lipídeos,  proteínas, carboidratos e valor energético total. Com os resultados obtidos concluiu-se que as variedades que apresentaram maior rendimento foram Pipoca (48,75%), Eldorado (42,06%)e Branco (40,50%), sendo mais recomendadas para o beneficiamento e que o minimilho se trata de um produto de baixo valor calórico, podendo ser indicado em dietas hipocalóricas.</p><p align="center"><strong><em>Physical analysis, and nutritional composition centesimal babycorn (Zea mays, L.) organic variety of different</em></strong></p><p><strong>Abstract: </strong>Currently organic products come stealing the show from traditional products to be healthy, free of pesticides and generate less impact on the environment. The lithe corn (<em>Zea mays</em> L.) also known as " babycorn " an immature ear is not fertilized  (spikelets), is a vegetable , thin product concerned that has gained importance in the market preserved in Brazil. This research aims to evaluate the quality of organic fresh baby corn in different varieties and determine the composition and nutritional. Used as analytical methodologies determinations yield , average weight , diameter and length of the spikelets , and pH , soluble solids , titratable acidity, moisture, ash , lipids , proteins , carbohydrates and total energetic value . With these results it was concluded that the varieties of higher yield were Popcorn (48.75%), Eldorado (42.06 %) and White (40.50 %), and most recommended for improvement and that is babycorn is a product of low calorific value and can be displayed on a hypocaloric diet.</p>

scholarly journals Adubação potássica na produção e qualidade pós-colheita de goiaba ‘Paluma’ no semiárido potiguar

2016 ◽  
Vol 7 (1) ◽  
pp. 139 ◽  
Author(s):  
Renato Dantas Alencar ◽  
Grazianny Andrade Leite ◽  
Vander Mendonca Mendonça ◽  
Franciezer Vicente de Lima ◽  
Gustavo Alves Pereira ◽  
...  
Keyword(s):  
Titratable Acidity ◽  
Linear Increase ◽  
Soluble Solids ◽  
Average Weight ◽  
Total Production ◽  
Fruit Firmness ◽  
Guava Fruit ◽  
Commercial Yield ◽  
Solids Content

The aim of this study was to evaluate the effect of potassium fertilization on yield and final quality of guava fruit variety ‘Paluma’, grown at the Irrigated District of Baixo Açu-RN, Brazil. The experimental was carried out in a completelyrandomized blocks design in split plot with five treatments (0, 0.5, 1.0, 1.5 and 2.0 kg K2O plant-1) with four repetitions. The subplots were composed of two harvest seasons and the following characteristics were evaluated: number of fruits, commercial production, total production, commercial yield, average weight of commercial fruits and average weight of total fruit. For fruit quality the following characteristics were evaluated: vitamin C, soluble solids content, firmness, titratable acidity, flesh pH, fruit length and. With an increasie of K2O dose, a linear increase in the number of fruits was observed and ahigher yield was obtained when a dose of 0.370 kg K2O per plant was applied and a higher fruit firmness was obtained with a dose of 1.2 kg K2O per plant.

scholarly journals Quality of Pink Lady Apples in Relation to Maturity at Harvest, Prestorage Treatments, and Controlled Atmosphere during Storage

HortScience ◽  
2007 ◽  
Vol 42 (3) ◽  
pp. 605-610 ◽  
Author(s):  
Elena de Castro ◽  
William V. Biasi ◽  
Elizabeth J. Mitcham
Keyword(s):  
Fruit Quality ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Controlled Atmosphere ◽  
Background Color ◽  
Ethylene Concentration ◽  
Green Background ◽  
Storage Atmosphere ◽  
Pattern Index

Apple [Malus ×sylvestris (L.) Mill. var. domestica (Borkh.) Mansf. ‘Cripps Pink’] fruit were harvested yearly, at two or three maturity stages, from the same California orchard in 2002 through 2005. Fruit firmness, soluble solids, titratable acidity, background color, and percent blush were correlated with the starch pattern index at harvest. Fruit from each harvest were stored at 0.5 ºC in air or in a controlled atmosphere (CA) with 1.5 or 2 KPa O2 in combination with 1, 3, and 5 KPa CO2. Subsets of fruit were treated with 1 μL·L−1 1-methylcyclopropane for 24 hours at 0 ºC or 2200 μL·L−1 diphenylamine (DPA) for 5 minutes. Ethylene production was measured for 30 days after harvest. Ethylene concentration in the storage atmosphere was also monitored during storage. Fruit quality was evaluated after storage plus 5 days of ripening at 20 ºC. Fruit in a CA with 1 or 3 KPa CO2 maintained firmness and green background color, and produced less ethylene during ripening at 20 ºC than fruit stored in a CA with 5 KPa CO2; however, quality of all CA-stored fruit was better than air-stored fruit. Flesh browning developed only in CA storage, appearing by 2 months and not increasing in incidence with further storage periods. 1-Methylcyclopropane conserved fruit quality in air as well as CA during 4 months of storage, and DPA-treated fruit were firmer after CA storage, but similar after air storage, compared with untreated fruit. Diphenylamine did not control a stem-end scald disorder, which increased with time in storage and affected more than 80% of the fruit after 6 months of air storage.

scholarly journals Characterization of maturity and quality of Brazilian apirenic grapes in the São Francisco river Valley

2012 ◽  
Vol 32 (1) ◽  
pp. 26-33 ◽  
Author(s):  
Robson de Jesus Mascarenhas ◽  
Silvanda de Melo Silva ◽  
Maria Auxiliadora Coêlho de Lima ◽  
Rejane Maria Nunes Mendonça ◽  
Heinz Johann Holschuh
Keyword(s):  
Titratable Acidity ◽  
Soluble Solids ◽  
Minimum Diameter ◽  
Red Grapes ◽  
Berry Size ◽  
Large Clusters ◽  
Small Clusters ◽  
Light Green

The objective of this study was to characterize and correlate maturity and quality of the first varieties of Brazilian seedless grapes 'BRS Clara', 'BRS Linda', 'BRS Morena', and 'Advanced Selection 8' compared with the American variety 'Crimson Seedless' in compliance with the Brazilian Normative/2002 and export standards Advanced Selection 8' is dark reddish, has large clusters, and is a very large ellipsoid berry; 'BRS Morena' is black with medium sized clusters and large berry shaped as ellipsoid to globoid; 'BRS Linda' is light green and has large sized clusters; 'Crimson' is pink and has small clusters with berries varying from medium to large sizes and ellipsoid shaped; and 'BRS Clara' is green yellowish has medium sized clusters and small berry of elongated ellipsoid shape. All varieties evaluated meet the standard for domestic market established as berry size minimum diameter 12 mm. 'BRS Clara' does not meet the export requirements of diameter. Berries of the red grapes 'BRS Morena' and 'Crimson Seedless' are firmer. The pH, titratable acidity, and soluble solids meet the official standards. Larger clusters are less acidic and present higher soluble solids/titratable acidity ratios implying that they are the sweetest type when ripe.

scholarly journals Fruit quality of ‘Eva’ e ‘Princesa’ apples grown under nitrogen fertigation in semiarid climate

2015 ◽  
Vol 19 (10) ◽  
pp. 967-972 ◽  
Author(s):  
João M. de S. Miranda ◽  
Ítalo H. L. Cavalcante ◽  
Inez V. de M. Oliveira ◽  
Paulo R. C. Lopes ◽  
Joston S. de Assis
Keyword(s):  
Fruit Quality ◽  
Skin Color ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Economic Viability ◽  
Fruit Firmness ◽  
Fruit Characteristics ◽  
Apple Cultivars ◽  
Fruit Mass

ABSTRACTThe production of high quality fruits is a necessary factor for the adaptation and production of plant species with economic viability. Thus, an experiment was conducted from July 2012 to January 2013 to evaluate the fruit quality of the ‘Eva’ and ‘Princesa’ apple cultivars as a function of nitrogen fertilization in Petrolina, PE, Brazil. The experimental design consisted of randomized blocks, with treatments distributed in a factorial arrangement 2 x 4, corresponding to apple cultivars (Eva and Princesa) and nitrogen doses (40; 80; 120 and 160 kg of N ha-1), with four replications and three plants in each plot. The fruit characteristics, such as fruit mass, skin color (luminosity, chromaticity, and colour angle), size (width and length), pulp firmness, titratable acidity (TA), soluble solids (SS) and the SS/TA ratio, were recorded. Nitrogen doses do not affect fruit quality of studied apple cultivars. The fruit quality attributes are different between apple cultivars: fruit firmness, SS/TA ratio, fruit mass and fruit diameter are superior for Princesa cultivar, while the fruit length for Eva cultivar is superior.

scholarly journals Phenology, production and quality of blueberry produced in humid subtropical climate

2018 ◽  
Vol 40 (3) ◽  
Author(s):  
José Gilberto Sousa Medeiros ◽  
Luiz Antonio Biasi ◽  
Claudine Maria de Bona ◽  
Francine Lorena Cuquel
Keyword(s):  
Fruit Set ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Subtropical Climate ◽  
Blue Color ◽  
Productive Performance ◽  
Climate Conditions ◽  
Mass Size ◽  
Fruit Mass

Abstract Studies on adaptation to the cultivation site are necessary for the recommendation of new cultivars. The aim of this study was to evaluate the phenological development, productivity and fruit quality of eight blueberry cultivars from the rabbiteye group (Aliceblue, Bluebelle, Bluegem, Briteblue, Climax, Delite, Powderblue and Woodard) and two from the highbush group (Georgiagem and O’Neal) under humid subtropical conditions in the 2012/2013, 2013/2014 and 2014/2015 cycles. Beginning and end of flowering, beginning and end of harvesting, fruit set, production, mass, diameter, pH, content of soluble solids, titratable acidity, ratio and coloring were evaluated. The evaluated cultivars presented flowering in the period from July to September, concentrating harvest in the months of November and December. The highest fruit set was observed in Delite, Climax, Briteblue and Powderblue cultivars. There were differences among cultivars regarding fruit mass, size, pH, content of soluble solids and acidity. The results showed that the cultivars exhibited blue color with few variations over the evaluation years. Cultivars with the best productive performance under humid subtropical climate conditions are Bluegem, Delite, Climax and Powderblue.

scholarly journals Yield and quality of strawberry cultivars

2010 ◽  
Vol 28 (2) ◽  
pp. 222-226 ◽  
Author(s):  
Luis Eduardo C Antunes ◽  
Nara Cristina Ristow ◽  
Ana Cristina R Krolow ◽  
Sílvia Carpenedo ◽  
Carlos Reisser Júnior
Keyword(s):  
Statistical Design ◽  
Rio Grande ◽  
Titratable Acidity ◽  
Fruit Weight ◽  
Climatic Conditions ◽  
Soluble Solids ◽  
Experimental Unit ◽  
Rio Grande Do Sul ◽  
Yield And Quality

The strawberry cultivation is an important economic activity in the Rio Grande do Sul State, Brazil, however the number of offered cultivars to the growers is reduced. The yield and quality of strawberry (Fragaria x ananassa Duch.) cultivars Camarosa, Galexia, Earlibrite, Festival, Plarionfre and Sabrosa was evaluated under the climatic conditions of Pelotas, Rio Grande do Sul State. We determined the number, mass, total soluble solids (TSS ºBrix), total titratable acidity (TTA), antocianin level and fresh fruits produced in an experimental unit. We also determined the production of fruits per hectare and per plant. The statistical design used in the experiment was of completely randomized blocks with 6 treatments (cultivars) and 4 replicates where the experimental unit was composed of 8 plants. The harvest began in the first half of August, extending to the second half of December, totalling 20 weeks. Plarionfre, Earlibrite and Festival cultivars showed higher production from the first half of October until the end of the first half of November. Camarosa reached higher productivity, mass of plants and fruit weight. There were no differences between the evaluated cultivars in the levels of TSS, antocianin, ATT and pH during the period of evaluation.

scholarly journals The effect of using grafted seedlings on the yield and quality of tomatoes grown in greenhouses 

2018 ◽  
Vol 45 (No. 2) ◽  
pp. 76-82 ◽  
Author(s):  
Rodica Soare ◽  
Maria Dinu ◽  
Cristina Babeanu
Keyword(s):  
Fruit Quality ◽  
Vegetative Growth ◽  
Morphological Characteristics ◽  
Fruit Production ◽  
Soluble Solids ◽  
Average Weight ◽  
Appreciable Effect ◽  
Tomato Plants ◽  
Production Characteristics

This study was aimed at observing the effect of the grafting of tomato plants on morphological (vegetative growth), production and nutritive characteristics (quantity and quality of production). For this purpose, the ‘Lorely F1’ cultivar was used as a scion grafted onto the ‘Beaufort’ rootstock. Plants were cultivated with a stem and two stems. The observations collected in this study were concerned with the characteristics of plant growth. The studied morphological characteristics were plant height, stem diameter and number of leaves, and the studied production characteristics were the characteristics of fructification and productivity (the average number of fruit per plant, the average weight of the fruit, production per plant). Particular attention was paid to the nutritional characteristics of the fruit, to the fruit quality (total soluble solids, total sugar, acidity, vitamin C, antioxidant activity (by the Trolox method) and the contents of lycopene and beta-carotene). The results showed that grafting positively influenced the growth and production characteristics. Grafting of tomato plants had an appreciable effect on the vegetative growth of the variant 2-grafted tomatoes with a stem. The best option in terms of productivity and production was the variant 3-grafted tomatoes with two stems, which yielded 9.2 kg per plant. Fruit quality was not improved in any of the grafted variants. 

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