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 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 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.

scholarly journals Productivity and quality of irrigated organic yellow passion fruits in deep planting in Southeastern Amazon

2020 ◽  
Vol 42 (4) ◽  
Author(s):  
Wagner de Moura Francisco ◽  
Sebastião Elviro de Araújo Neto ◽  
Thays Lemos Uchôa ◽  
Luís Gustavo de Souza e Souza ◽  
Nilciléia Mendes da Silva
Keyword(s):  
Block Design ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Organic System ◽  
Randomized Complete Block Design ◽  
Total Titratable Acidity ◽  
Total Productivity ◽  
Fruit Mass ◽  
Yellow Passion Fruit

Abstract The aim of this work was to evaluate the effect of irrigation and deep planting of tall yellow passion fruit seedlings in the organic system on fruit quality and productivity. A randomized complete block design with 2x4 subdivided plots, with 8 treatments and 4 blocks was used, with irrigated and rainfed systems being plots and 4 planting depths (0.20 m, 0.40 m, 0.60 m and 0.80 m) subplots. Seedlings aged 90 days and 2 m in height were used. Before planting, all stem leaves were removed from seedlings to be buried and to IBA at concentration of 4,000 mg kg-1 was applied. The number of fruits per plant, average fruit mass and total productivity and of 1st and 2nd crops, as well as total soluble solids (TSS), total titratable acidity (TTA), ratio (TSS/TTA), commercial and equatorial diameter classification were estimated. Irrigated planting at depths of 0.20 m and 0.40 m was more productive in the first crop, but there was no difference in the total productivity and in the second crop. Neither irrigation nor plant depth altered the chemical quality of fruits and commercial classification.

scholarly journals Adaptability and stability of peach and nectarine cultivars in subtropical climate

Revista CERES ◽  
2017 ◽  
Vol 64 (5) ◽  
pp. 516-522 ◽  
Author(s):  
Rosana Gonçalves Pires Matias ◽  
Claudio Horst Bruckner ◽  
Danielle Fabíola Pereira da Silva ◽  
Pedro Crescêncio Souza Carneiro ◽  
João Alison Alves de Oliveira
Keyword(s):  
Cycle Length ◽  
Titratable Acidity ◽  
Fruit Production ◽  
Fresh Mass ◽  
Soluble Solids ◽  
Subtropical Climate ◽  
Production Potential ◽  
Phenotypic Stability ◽  
The Stability ◽  
Fruit Mass

ABSTRACT Information on adaptability and stability of fruit production in different environments or years is crucial to increasing agricultural production potential. Therefore, the objective of this study was to evaluate whether there is interaction between cultivars and years, as well as to assess the stability of peach and nectarine cultivars regarding fruit fresh mass, SS/TA ratio, and cycle length in Viçosa -MG, Brazil. The characteristics fruit fresh mass (FM), soluble solids/titratable acidity ratio (SS/TA), and cycle length (CL) were evaluated in 28 cultivars of peach and two cultivars of nectarine from the orchard of the Universidade Federal de Viçosa, in 2011, 2012, and 2013. The methods used to determine the phenotypic stability across time were Eberhart & Russell (1966) and the Traditional. The interaction cultivars x years was significant for all traits. Cultivar ‘Josefina’ showed broad adaptability for SS/TA ratio, and cultivars ‘Flordaprince’ and ‘Tropical’ for cycle length. For favorable environments, the cultivars ‘Capdebosq’ and ‘Maciel’ are indicated regarding the characteristic fruit mass, and ‘Coral’ and ‘Talismã’ for SS/TA ratio. ‘Rubimel’ was adaptable to unfavorable environments regarding fruit mass.

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.

scholarly journals Quality of Italian tomatoes grown with different forms of calcium application

2020 ◽  
Vol 9 (12) ◽  
pp. e10191210837
Author(s):  
Isa Gabriela Vieira de Andrade ◽  
Gilmário Noberto de Souza ◽  
Eduardo Santana Aires ◽  
Ítala Laiane Silva Gomes ◽  
Ruy de Carvalho Rocha ◽  
...  
Keyword(s):  
Block Design ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Fruit Firmness ◽  
Post Harvest ◽  
Randomized Block Design ◽  
Randomized Design ◽  
Tree Fruits ◽  
Fruit Mass

Tomato is one of the most consumed vegetables in the world. This work aimed to evaluate post-harvest quality of Italian Saladete tomatoes grown in a protected environment, with different ways of calcium application, in the Middle São Francisco Valley. Consisting of five Italian tomato hybrids (Anjico, Gabrielle, Liberty, Ty 2006 and Shanty), and three different ways of calcium application (T0 without application of calcium; T1 application of calcium in the opening flower, and T2 weekly application of calcium in the fruit).  Poductivity, average fruit mass, incidence of apical rot, fruit firmness, soluble solids (SS), titratable acidity (AT), and pH, were analized. The experimental design used was a completely randomized block design in a factorial scheme (five cultivars x three ways of calcium application), with three repetition and using two central plants as useful plot for analysis, except for fruit firmness that was carried out in a completely randomized design, using tree fruits per analysis. According to the results obtained, hybrids of Italian saladete tomatoes behaved in a satisfactory manner, therefore it is recommended to cultivate hybrids of Italian saladete tomatoes in the Middle São Francisco Valley, mainly hybrid Anjico. Calcium application way did not interfere with post-harvest attributes.

scholarly journals Fruit quality of wild, sweet and yellow passion fruit genotypes in Distrito Federal, Brazil

2021 ◽  
Vol 37 ◽  
pp. e37064
Author(s):  
Daiane da Silva Nóbrega ◽  
Ana Clara Nunes Mendes ◽  
José Ricardo Peixoto ◽  
Michelle Souza Vilela ◽  
Fábio Gelape Faleiro ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Titratable Acidity ◽  
Passion Fruit ◽  
Soluble Solids ◽  
Width Ratio ◽  
Total Soluble Solids ◽  
Length Width ◽  
Fruit Mass ◽  
Yellow Passion Fruit

Despite the importance of passion fruit for the Brazilian fruit market, there are still many agronomic and fruit quality problems to be solved, in order to increase this crop performance. The objective of this study was to evaluate the quality of twelve genotypes of wild, sweet and yellow passion fruit, aiming to identify promising materials considering fruit quality, in Federal District, Brazil. An experiment was carried out at the Água Limpa Farm of the Universidade de Brasília (UnB) from 2016 to 2018, in a randomized block design, with 12 treatments, 4 replicates and 6 plants/plot. At the harvesting time, six fruits per plot were randomly collected for the following physicochemical analysis: fruit mass, pulp mass with and without seeds, length/longitudinal diameter, width/transverse diameter, length/width ratio, husk thickness, predominant color of the pulp (L*, C*, h*), number of seeds, seed size, total soluble solids content, total titratable acidity, total soluble solids/total titratable acidity ratio and pH. High heritability values ​​and relation of genetic/environment variation coefficients ratio were observed for most of the characteristics evaluated. The genotypes of yellow passion fruit MAR20#21 P2 x FB 200 P1 R2 and MAR20#19 ROXO R4 x ECRAM P3 R3 showed the best characteristics of fruit mass and pulp mass with seed. All the genotypes studied showed values ​​of total soluble solids above 11ºBrix. Positive and significant correlation was observed between fruit mass and length/width ratio, indicating that oblong fruits have higher fruit mass.

scholarly journals Intercropping Pineapple With Rice or Cowpea: An Alternative for Family Farming in the State of Tocantins, Brazil

2019 ◽  
Vol 11 (4) ◽  
pp. 288
Author(s):  
S. C. Siebeneichler ◽  
E. R. Santos ◽  
R. A. Veloso ◽  
M. A. B. Pereira ◽  
R. F. F. Brito ◽  
...  
Keyword(s):  
Cropping System ◽  
Titratable Acidity ◽  
The State ◽  
Soluble Solids ◽  
Family Farming ◽  
Fruit Length ◽  
Growing Period ◽  
Pineapple Fruit ◽  
Fruit Mass

Pineapple is commonly planted in monoculture systems. It is a long-cycle crop that takes time to monetize, which hinders its cropping by small farmers. The objective of this work was to evaluate the production and quality of pineapple with short-cycle crops, at the beginning of the growing period, as an alternative for family farming in the state of Tocantins. The experimental design was randomized complete block with three treatments and four replications. The pineapple was intercropped with rice and cowpea. The treatments consisted of T1: pineapple + rice; T2: pineapple + cowpea and T3: pineapple in monoculture. The evaluated variables of the pineapple fruit were pH, soluble solids, titratable acidity, yield, fruit mass, fruit length with crown, fruit length without crown and fruit circumference. For the rice and cowpea, the yield and the Area Equivalence Index (AEI) were determined. The cropping system did not influence the pineapple fruits quality. The pineapple yielded less. Cowpea yielded more when intercropped with pineapple. The AEI of the pineapple + rice intercropping was 2.07, being feasible for increasing the use of the area by 100%. The AEI of the pineapple + cowpea intercropping was 2.48, being feasible as it increased the use of the area by 148%. The results obtained showed that it is possible to intercrop pineapple with rice or cowpea at the beginning of pineapple cultivation, and it can be a viable alternative for family farming.

scholarly journals Harvest season, productivity and physicochemical quality of peach fruits grown in Dois Vizinhos, Paraná State, Brazil

2020 ◽  
Vol 41 (6supl2) ◽  
pp. 3011-3022
Author(s):  
Gilmar Antonio Nava ◽  
◽  
Eder Oneide Kurschner ◽  
Dalva Paulus ◽  
◽  
...  
Keyword(s):  
Titratable Acidity ◽  
Soluble Solids ◽  
Experimental Unit ◽  
Subtropical Climate ◽  
Crop Season ◽  
Physicochemical Quality ◽  
Fruit Growing ◽  
Main Components ◽  
Technological University

The objective of this study was to determine the harvest time, main components of yield and the physicochemical quality attributes of peach cultivars produced in a subtropical climate. The study was carried out in the Fruit Growing sector of the Federal Technological University of Paraná, Campus Dois Vizinhos, Paraná State, Brazil. The main components of yield and estimated productivity, background color of the epidermis, pulp firmness, soluble solids (SS), titratable acidity (TA) and the SS/TA ratio of 17 peach cultivars were determined for two crop cycles: 2016 and 2017. The experimental design was a randomized block with four replicates of one tree per experimental unit, in a 17 x 2 bifactorial scheme (cultivars x years). Fruits of the cultivars: Aurora-1, Bonão, Douradão, Leonense, Ouromel, Rubimel and Zilli matured early, whereas those of Eldorado and BR-1 were last to mature. The cultivars Bonão, Charme and Eldorado were the most productive. Eldorado produced the highest caliber of fruits and Bonão produced the highest number of fruits per tree. The cultivars BR-1 and Eldorado produced the sweetest fruits and Leonense, the most acidic. The 2016 crop season provided greater productivity, with fruits of greater caliber and firmness of pulp.

scholarly journals Yield and quality of the Tetsukabuto squash fruits induced with 2,4-D doses under dry conditions

2017 ◽  
Vol 35 (2) ◽  
pp. 271-277
Author(s):  
Roberto CF Queiroga ◽  
Gabriel D Silva ◽  
Auderlan M Pereira ◽  
Ricardo RP Almeida ◽  
Ariano B Silva
Keyword(s):  
Fruit Set ◽  
Fruit Production ◽  
Climatic Conditions ◽  
Soluble Solids ◽  
Plant Production ◽  
Control Treatment ◽  
Yield And Quality ◽  
Dry Conditions ◽  
Fruit Mass

ABSTRACT Squashes and pumpkins are known and grown worldwide, including the Tetsukabuto type, a hybrid of Japanese origin. On this work, we evaluated yield and quality of parthenocarpic fruits of hybrid Tetsukabuto developed with the use of 2,4-D doses, in the climatic conditions of the Brazilian semiarid, in the city of Pombal, state of Paraíba, Brazil. The experiment was carried out from February to May 2013, in complete blocks at random and five replications. Treatments corresponded to five 2,4-D doses (0, 90, 180, 270, and 360 mg/L) applied to female flowers, and a control treatment, where fruits developed out of insect pollinated flowers. We evaluated number of flowers per plant, duration of flowering, number of fruits per plant (used to estimate number of fruits per hectare), fruit set index, fruit mass and transversal and longitudinal diameters, pulp thickness and content of soluble solids, total fruit production and yield. Number of fruits per plant and fruit mass increased 269.5 and 15.4%, respectively, with 212.1 mg/L and 360.0 mg/L of 2,4-D, when compared to the control treatment. Increasing the 2,4-D dose from 0.0 to 241.4 mg/L resulted in 38.2% rise in plant production. Correlations were significant only for number of flowers x number of fruits per plant (NF) and NF x yield, with coefficients of 87.5 and 82.7%, respectively. These results indicate that fruit induction using 2,4-D resulted in higher fruit set, independent of the 2,4-D dose applied.

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