scholarly journals Gibberellic acid reduces clusters rot of ‘Sauvignon blanc’ grapes

2019 ◽  
Vol 41 (4) ◽  
Author(s):  
Pricila Santos da Silva ◽  
Marines Batalha Moreno Kirinus ◽  
Caroline Farias Barreto ◽  
Carlos Sebastián Pérez Lamela ◽  
Marcelo Barbosa Malgarim ◽  
...  
Keyword(s):  
Gibberellic Acid ◽  
Titratable Acidity ◽  
Climatic Conditions ◽  
Soluble Solids ◽  
Rio Grande Do Sul ◽  
Sauvignon Blanc ◽  
Physical Chemical ◽  
Maturation Index ◽  
The Ideal

Abstract The ripening of grapes is impaired by climatic conditions due to the prolonged rainy season and thus facilitates the proliferation of diseases such as grape clusters rotting, caused by the fungus Botrytis cinerea, even before the ideal harvesting point. The aim of the study was to evaluate the effect of gibberellic acid (GA3) on rot and on physical-chemical quality of ‘Sauvignon Blanc’ grapevine. The experiment was carried out in the production season of 2016 and 2017 in Campanha region in Rio Grande do Sul, Brazil. The GA3 treatments were at the doses of 0 (control); 2; 4; 6 and 8 mg L-1 of GA3. The percentage of clusters rotting and maturation index decreased, however, the titratable acidity increased with GA3 doses. The cluster and rachis length increased with application of GA3. The cluster width; cluster, rachis and berry mass and the soluble solids were not influenced by application of GA3. In ‘Sauvignon Blanc’ grapevine, GA3 reduced the percentage of clusters rotting and improved the cluster and rachis length characteristics and titrable acidity.

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.

ALTERAÇÕES FÍSICAS DE CAQUIS ‘KYOTO’ SUBMETIDOS À APLICAÇÃO DE 1-METILCICLOPROPENO

2017 ◽  
Vol 32 (3) ◽  
pp. 288
Author(s):  
Nathalie Cardoso Cábia ◽  
Rogério Lopes Vieites
Keyword(s):  
Titratable Acidity ◽  
Soluble Solids ◽  
Starch Degradation ◽  
Diospyros Kaki ◽  
Chemical Quality ◽  
Titrable Acidity ◽  
Physical Chemical ◽  
Maturation Index ◽  
Index Ratio

O presente trabalho teve como objetivo avaliar a qualidade físico-química de caquis ‘Kyoto’ tratados com 1-metilciclopropeno (1-MCP). Os frutos, após a colheita, foram selecionados, higienizados e expostos a diferentes concentrações de 1-MCP (0 ppb, 500 ppb, 1000 ppb e 1500 ppb) e após o procedimento foram armazenados sob refrigeração a 0 ± 0,5°C e 90 ± 5% de UR. Foram realizadas análises de taxa respiratória, perda de massa fresca, acidez titulável, potencial hidrogeniônico (pH), sólidos solúveis e índice de maturação (“Ratio”). As análises foram realizadas nos frutos a cada 7 dias, ao longo de 35 dias de armazenamento refrigerado. O delineamento utilizado foi inteiramente casualizado, com 3 repetições por tratamento, utilizando-se o teste de Tuckey a 5% de probabilidade. Nas condições em que o trabalho foi realizado, pode-se concluir que as doses estudadas de 1-MCP não se apresentaram eficientes no controle do amadurecimento dos caquis ‘Kyotos’ durante os 35 dias de armazenamento, porém os frutos tratados com 1500 ppb de 1-MCP apresentaram controle da acidez titulável e de sólidos solúveis, indicando que afetou a taxa de degradação do amido; e a dose de 1000 ppb se apresentou mais eficiente na manutenção da firmeza.PALAVRAS-CHAVES: Diospyros kaki L., qualidade, inibição do etileno, pós-colheita. EFFECTS OF 1-METHYLCYCLOPROPENE APLICATION ON ‘KYOTO’ PERSIMMON PHYSICAL CHARACTERISTICSABSTRACT: The presente work aimed to evaluate the physical-chemical quality of ‘Kyoto’ persimmons treated with 1-methylcyclopropene (1-MCP). The fruits, after harvest, were selected, Satinized and exposed to different concentrations of 1-MCP (0 ppb, 500 ppb, 1000 ppb and 1500 ppb) and then were stored under refrigeration at 0 ± 0,5°C and 90 ± 5% RH. Respiratory rate, fresh mass loss, titrable acidity, hydrogen ionic potential (pH), soluble solids and maturation index (“Ratio”) were performed. The analyzes were carried out every 7 days, during 35 days of refrigeted storage. The experiment design was completely randomized, with 3 replicates per treatment, using the Tuckey test at 5% propability. In the conditions the work was carried out, it can be concluded that the studied doses of 1-MCP were not, efficient in controlling the ripening of ‘Kyotos’ persimmons during the 35 days of storage however the fruits treated with 1500 ppb of 1-MCP showed control of titratable acidity and soluble solids, indicating that it affected the rate of starch degradation; and the 1000 ppb dose was more efficient in maintaining firmness.KEYWORDS: Diospyros kaki L., quality, ethylene inhibition, post-harvest. 

scholarly journals Production and quality of banana ‘BRS Conquista’ bagged with different colored polypropylene bags

2019 ◽  
Vol 13 (2) ◽  
pp. 171-177
Author(s):  
Rafaelly Calsavara Martins ◽  
Jackson Mirellys Azevêdo Souza ◽  
Marcelo De Souza Silva ◽  
Nathália De Souza Parreiras ◽  
Marcela Sant'Anna Cordeiro da Silva ◽  
...  
Keyword(s):  
Total Mass ◽  
Mass Number ◽  
New Technologies ◽  
Block Design ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Randomized Complete Block Design ◽  
Plastic Bag ◽  
Maturation Index

Worldwide, the second most traded fruit is banana, which is highly appreciated by Brazilian consumers. Moreover, new technologies have been used to improve fruit quality during cultivation. This study aimed to assess the influence of plastic bag colors on the production and quality of banana ‘BRS Conquista’. The treatments consisted of the use of commercial polypropylene bags e colored white, black, red or blue, in addition to the control (non-bagged). This study used a randomized complete block design with five treatments, four replicates and four plants per plot, totalling 80 plants. The assessments consisted of bunch mass; rachis mass; fruit total mass; mean cluster mass; number of fruits per bunch and per cluster; and fruit length and diameter; along with fruits physicochemical traits, such as soluble solids, titratable acidity, pulp/peel ratio and maturation index. The results indicated that no interference was obtained from the different plastic bag colors in the productive variables. However, a greater content of soluble solids was observed in the non-bagged bunches.

scholarly journals Strobilurin and boscalid in the quality of net melon fruits

2017 ◽  
Vol 38 (2) ◽  
pp. 543 ◽  
Author(s):  
Ana Claudia Macedo ◽  
Amanda Cristina Esteves Amaro ◽  
Anamaria Ribeiro Pereira Ramos ◽  
Elizabeth Orika Ono ◽  
João Domingos Rodrigues
Keyword(s):  
Cucumis Melo ◽  
Titratable Acidity ◽  
High Ratio ◽  
Soluble Solids ◽  
Active Principle ◽  
Physiological Effects ◽  
Physical Chemical ◽  
Hormonal Balance ◽  
Fruit Mass

Until recently, fungicides were used exclusively for disease control; however observations of physiological effects brought a new concept to the use of these products. Strobilurins have positive physiological effects on crop yield, due to the increase of liquid photosynthesis and better hormonal balance. However, boscalid complements the action of these fungicides, applied alternately or together. The aim of this study was to evaluate the effect of strobilurins (azoxystrobin and pyraclostrobin), boscalid and the mixture of these on the physical-chemical quality of net melon fruits (Cucumis melo var. Reticulatus). The experiment was conducted in the municipality of São Manuel (SP), using the hybrid of Cantaloupe M2-308 net melon, the experimental design was in randomized blocks with five replicates. The treatments used were: T1 - control; T2 - azoxystrobin 60g ha-1 of active principle (a.p.); T3 - boscalid 75g ha-1 of the a.p.; T4 - pyraclostrobin 50g ha-1 of the a.p.; T5 - boscalid (37,5g ha-1) of the a.p. + pyraclostrobin (25g ha-1) of the a.p. The first application of the treatments was carried out at fourteen days after the transplanting of the seedlings and the others at seven day intervals, totaling eight applications throughout the cycle. Two fruits of each plot were collected, which were identified for analysis in the laboratory. The following characteristics were evaluated: fresh fruit mass; mesocarp thickness, pulp texture, peel trajectory, pH, titratable acidity, soluble solids and the ratio. The results were submitted to analysis of variance and the averages compared by the Tukey test at 5% probability using the SISVAR program. The fruits of the plants treated with boscalid 75g ha-1 were the ones that showed higher concentration of soluble solids and low titratable acidity, resulting in a better ratio. Despite the lower value, the fruits of the plants treated with pyraclostrobin 50g ha-1 showed a high ratio value, besides presenting higher value for pulp texture. The mixture of boscalid (37.5g ha-1) + pyraclostrobin (25g ha-1) also showed high values of soluble solids which resulted in a good “ratio” value.

Refrigerated storage of fresh-cut marolo (Annona crassiflora mart.)

2020 ◽  
Vol 10 (2) ◽  
pp. 44-54
Author(s):  
Flávia Della Lucia ◽  
Eric Batista Ferreira ◽  
Sandra Maria Oliveira Morais Veiga ◽  
Luciana Azevedo ◽  
Marcela Aparecida Miranda Moreira ◽  
...  
Keyword(s):  
Storage Time ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Physical Chemical ◽  
Significant Difference ◽  
Thermotolerant Coliforms ◽  
Fresh Cut ◽  
Annona Crassiflora ◽  
Storage Temperatures

Marolo is a fruit typical of the Brazilian Savanna that is highly appreciated for its exotic flavour, nutritional value and sensory attributes. This study aimed to assess the quality of fresh-cut marolo by checking for possible changes in physical, chemical, microbiological and sensorial characteristics during cold storage (12 days at 0°C, 5°C and 10°C). Firmness varied based on storage time; the fruit softened on the 8th day and then increased in hardness until the end of the study. The lowest storage temperatures reduced the darkening rate of this product. No variations in the levels of soluble solids (12.7 to 14.6°B) or total phenolics (741.06 to 1295.21 mg. GAE.100g-1) were observed. Fruits stored at 10 °C showed an increase in titratable acidity after the 5th day and an increase in pH on the 10th and 12th days. Increases in the soluble pectin (156 to 265.73 mg.100g-1) and total pectins (>1.000 mg.100g-1) were noted. No significant difference was observed in the count of the total and thermotolerant coliforms, and the growth of filamentous fungi and yeasts decreased after storage at 0°C and 5°C after the 5th day. Storage at 5 °C for 5 days was found to be the most efficient set of conditions for maintaining the physical, chemical, microbiological and sensory characteristics of marolo.

scholarly journals Post harvest evaluation of physical-chemical parameters of mechanically damaged Tahiti acid limes

2010 ◽  
Vol 1 (2) ◽  
pp. 79
Author(s):  
Michel Shoiti Tamura ◽  
Roselene Ferreira Oliveira ◽  
Simone Correia Molina ◽  
Edmar Clemente
Keyword(s):  
Titratable Acidity ◽  
Soluble Solids ◽  
Chemical Parameters ◽  
Post Harvest ◽  
Physical Chemical ◽  
Randomized Design ◽  
Significant Difference ◽  
Completely Randomized Design ◽  
Solids Content

<p>From harvest to consumption, fruit and vegetables suffer a series of mechanical damages which, depending on their sensitiveness, may cause damages that put their final quality at risk. This work had as its objective evaluate the post harvest quality of mechanically damaged &lsquo;Tahity&rsquo; acid limes. The experiment was carried out in a completely randomized design, with 3 repetitions and 7 fruits per treatment, mechanical damages were then evaluated by cutting and impacting in comparison to healthy fruits (control), and maintained for periods of 0, 3. 6, 9, 12, 15 and 18 days, thus obtaining a 3 x 7 factorial experiment. Analyses were made throughout the 18 days, so as to determine the total soluble solids content (expressed in &deg;Brix); titratable acidity (in g of citric acid. 100mL<sup>-1</sup>); ratio (relationsoluble solids and titratable acidity); vitamin C (expressed in mg of ascorbic acid 100mL<sup>-1</sup>) and pH. The results obtained showed that there was significant difference in the chemical parameters evaluated, mainly those submitted to damaging treatment.</p><p>&nbsp;</p><p>DOI: http://dx.doi.org/10.14685/rebrapa.v1i2.20</p>

scholarly journals Productivity and chemical quality of grapevines cultivated in agroecological system under subtropical climate

2018 ◽  
Vol 40 (5) ◽  
Author(s):  
Josiane Aparecida Mariani ◽  
Gilmar Antônio Nava
Keyword(s):  
Titratable Acidity ◽  
Climatic Conditions ◽  
Soluble Solids ◽  
Subtropical Climate ◽  
Fresh Biomass ◽  
Productive Potential ◽  
Chemical Attributes ◽  
Grape Juices ◽  
Niagara Rosada

Abstract The productive potential of grapevine cultivars recently released in the market, especially for preparation of 100% grape juices, must be proved on the different Brazilian soil and climatic conditions of production, focusing on the Southwest of Paraná. The objective of this study was to evaluate the main yield components and chemical attributes of the juice of the following grapevine cultivars: Bordô, BRS Carmem, BRS Lorena, BRS Magna, BRS Rubea, BRS Violeta, Concord, Concord Clone 30, Isabel, Isabel Precoce, Moscato Bailey, Moscato Embrapa, Niagara Branca, Niagara Rosada and Seibel 5455. Paulsen 1103 was the rootstock used. The study was conducted during two harvests, 2015/2016 and 2016/2017, in Dois Vizinhos, Paraná State, Brazil. Due to the crop, we determined the number of bunches per plant, fresh biomass of bunches (g) and the estimates of productivity (kg/plant and ton/ha). We extracted the juice of cultivars to evaluate soluble solids (SS) contents, pH and titratable acidity (TA), as well as the ratio. The cultivars BRS Violeta, Isabel Precoce and Seibel 5455 were the most productive. The cultivars BRS Rúbea, BRS Violeta, Isabel, Moscato Embrapa, Moscato Bailey, Niagara Branca and Niagara Rosada have desirable soluble solids contents, pH and titratable acidity for preparation of 100% grape juices of quality in Dois Vizinhos and microregion. The best year-harvest of cultivation was 2016/2017.

SOME CLUSTER THINNING AND GIBBERELLIC ACID EFFECTS ON JUICE AND WINE QUALITY OF DE CHAUNAC GRAPES

1977 ◽  
Vol 57 (3) ◽  
pp. 643-646 ◽  
Author(s):  
D. F. WOOD ◽  
N. E. LOONEY
Keyword(s):  
Gibberellic Acid ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Juice Quality ◽  
Early Assessment ◽  
Wine Quality ◽  
Heavy Soil ◽  
Soil Site ◽  
The One

Thinning to one and two flower clusters per fruitful shoot significantly increased total soluble solids and total phenols but had no effect on titratable acidity of de Chaunac grapes in two vineyards differing widely in vine vigor and soil type. Treatment with 50 ppm gibberellic acid 10 days after bloom did not affect juice quality at either location. Grapes from the high vigor, heavy soil site were particularly high in titratable acidity, and potassium content was higher in berries from thinned vines in the same vineyard. An early assessment of wine quality showed the one-cluster treatment to be superior.

scholarly journals Influence of soil preparation and planting methods on watermelon productivity and quality

2021 ◽  
pp. 45-51
Author(s):  
Reginaldo Almeida Andrade ◽  
Fábio Régis de Souza ◽  
Luan de Oliveira Nascimento ◽  
Rychaellen Silva de Brito ◽  
Cleverson Agueiro de Carvalho
Keyword(s):  
Titratable Acidity ◽  
Conventional Tillage ◽  
Soluble Solids ◽  
Cultural Management ◽  
Planting Methods ◽  
Soil Preparation ◽  
Total Productivity ◽  
Maturation Index ◽  
Index Ratio

The productivity and quality of watermelon fruits can be influenced by several factors, edaphic or associated with cultural management, such as, the type and form of soil preparation and planting methods, which can be by direct sowing or through transplanted seedlings. The objective of this work was to evaluate productive characteristics and quality of watermelon fruits grown under different forms of soil preparation and planting methods. The experimental design used was randomized blocks, organized in a 2x3 factorial scheme, containing three replications, with 24 plants per plot. The evaluated factors were two forms of soil preparation and three forms of cultivation. The fruits were harvested when their tendrils showed visible signs of dryness, when their productive and qualitative characteristics were analyzed. The variables analyzed were the number of fruits per plant, fruit mass, transverse and longitudinal circumference of the fruits, total soluble solids (° Brix), total titratable acidity, maturation index (ratio) and total productivity. The planting methods do not alter the productive characteristics and the quality of the watermelon fruits, which proved to be adequate to the standard demanded by the national market. Conventional tillage, with plowing followed by harrowing, increases the number of fruits per plant and total productivity, reaching 30.7 Mg ha-1, a value 35.08% higher than the average for the state of Rondônia and 28.33 % above the national average.

scholarly journals Agronomic performance of fig plants grown with different numbers of branches

2021 ◽  
Vol 48 (1) ◽  
pp. 14-20
Author(s):  
Vander Mendonça ◽  
◽  
Francisco Sidene Oliveira Silva ◽  
Anderson Araujo Alves ◽  
Elania Guadalupe Paiva Martins ◽  
...  
Keyword(s):  
Vitamin C ◽  
Block Design ◽  
Titratable Acidity ◽  
Fruit Weight ◽  
Climatic Conditions ◽  
Soluble Solids ◽  
Randomized Block Design ◽  
Maturation Index ◽  
Solids Content ◽  
Number Of Branches

Fig production and quality are associated with the number of branches per plant and may vary among regions according to the climatic conditions and crop management. In this work, we studied the influence of the number of branches per plant on the production and fruit quality of 'Roxo de Valinhos' figs under semiarid conditions. The experiment was carried out at the didactic orchard of Federal Rural University of Semiarid (UFERSA), Mossoró city, Rio Grande do Norte state, Brazil. Fig plants were grown with 6, 12, 18, or 30 branches in a completely randomized block design with four replicates and four plants per plot. Plants without thinning were also cultivated as controls. The number of fruits per plant, productivity, fruit length, fruit diameter, and fruit weight were evaluated. Additionally, fruit firmness, titratable acidity (TA), soluble solids content (SS), maturation index (SSC/TA), and vitamin C content were analyzed. The results showed that plants cultivated with 12, 18, and 24 branches produced fruits with higher weight, more fruits per branch, and more fruits per plant and thus were more productive. Additionally, fruits showed a high vitamin C content and maturation index

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