scholarly journals The influences of rootstock and pruning seasons on productive and physicochemical traits of ‘Niagara Rosada’ grape

2019 ◽  
pp. 1211-1214
Author(s):  
Marco Antonio Tecchio ◽  
Marlon Jocimar Rodrigues da Silva ◽  
Camilo André Pereira Contreras Sánchez ◽  
Charles Yukihiro Watanabe ◽  
Mara Fernandes Moura ◽  
...  
Keyword(s):  
Block Design ◽  
Titratable Acidity ◽  
Fresh Mass ◽  
Subtropical Climate ◽  
Grape Must ◽  
Physicochemical Quality ◽  
Randomized Block Design ◽  
Soluble Solid ◽  
Niagara Rosada

The current study aimed to evaluate the effect of different rootstocks (‘IAC 766’, ‘IAC 572’, ‘IAC 313’, ‘IAC 571-6’ and ‘106-8 Mgt’) on the physicochemical quality of ‘Niagara Rosada’ grape under Brazilian subtropical climate. In this study, a vineyard trellising system supported three years old vines at a density of 6536 plants ha-1. Therefore, evaluations consisted of three pruning seasons: two winter pruning (August 2011 and September 2012) and a summer pruning (January 2012). A complete randomized block design was conducted, subdivided into plots, with five replicates, the plots represented by 5 rootstocks and subplots by pruning seasons. We evaluated bunch number per plant; bunch, berry and rachis fresh mass; berries number per bunch; soluble solid, pH and titratable acidity content in the grape must. Results showed that ‘Niagara Rosada’ grafted onto ‘IAC 572’, presented the highest bunch mass (227g), rachis fresh mass (7.5g) and berries number per bunch (66); while ‘IAC 313’ rootstock performed the lowest values. Moreover, ‘IAC 766’ and ‘106-8 Mgt’ rootstocks presented the highest soluble solid and titratable acidity content, due to these rootstock’s precocity. Furthermore, the highest ratio between soluble solid and titratable acidity was found in ‘Niagara Rosada’ grafted onto ‘IAC 313’ and ‘IAC 571-6’ rootstock.

scholarly journals QUALITY AND ANTIOXIDANT ACTIVIY OF TOMATO CULTIVATED UNDER DIFFERENT SOURCES AND DOSES OF NITROGEN

2016 ◽  
Vol 29 (4) ◽  
pp. 780-788 ◽  
Author(s):  
JOHN SILVA PORTO ◽  
TIYOKO NAIR HOJO REBOUÇAS ◽  
MARIA OLIMPIA BATISTA MORAES ◽  
MARINÊS PEREIRA BOMFIM ◽  
ODAIR LACERDA LEMOS ◽  
...  
Keyword(s):  
Block Design ◽  
Tomato Fruit ◽  
Calcium Nitrate ◽  
Nitrogen Sources ◽  
Titratable Acidity ◽  
Randomized Block Design ◽  
Soluble Solid ◽  
Physical And Chemical Quality ◽  
Physical And Chemical

ABSTRACT Tomatoes are an important component of the human diet because they are rich in minerals and antioxidants that sequester free radicals in cells, preventing various disorders that affect human health. Here, we aimed to evaluate the effects of different nitrogen sources and concentrations on antioxidant capacity and physical and chemical quality of tomato fruit. The experiment was conducted in Vitória da Conquista, state of Bahia, Brazil, in the experimental field of Universidade Estadual do Sudoeste da Bahia. The experimental setup included a randomized block design with four replicates in a factorial layout of 3 × 3 + 1 (control), for a total of 40 plots. The three treatments comprised different nitrogen sources (calcium nitrate, urea, and ammonium sulfate), applied in three doses (140, 280, and 420 kg ha-1). We evaluated firmness, pH, titratable acidity - TA, soluble solid - SS, SS/TA ratio, ascorbic acid, carotenoids, flavonoids, phenolic compounds and DPPH inhibition, were evaluated after samples were harvested. However, increasing concentrations of N adversely affected the acidity and led to an increase in the SS/TA ratio. Increasing the N concentration also reduced the content of bioactive compounds. excluding carotenoids, which consequently impaired antioxidant activity.

scholarly journals Production and quality of okra produced with mineral and organic fertilization

2019 ◽  
Vol 23 (2) ◽  
pp. 97-102
Author(s):  
Hemmannuella C. Santos ◽  
Emmanuel M. Pereira ◽  
Rafael L. S. de Medeiros ◽  
Paulo M. de A. Costa ◽  
Walter E. Pereira
Keyword(s):  
Vitamin C ◽  
Block Design ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Organic Fertilization ◽  
Randomized Block Design ◽  
Number Of Leaves ◽  
The Mean ◽  
Organic Compost

ABSTRACT Okra, Abelmoschus esculentus (L.) Moench, is a vegetable with annual fruit native to hot regions of Africa, well adapted to the conditions of the Northeast and Southeast regions of Brazil, where it is widely used by small farmers. This study aimed to evaluate the effect of mineral and organic fertilization on the production and quality of okra fruits. The experiment was conducted in randomized block design, with three replicates and eleven treatments defined according to a Baconian matrix. Treatments consisted of doses of N (0, 100, 200 and 300 kg ha-1), P (0, 100, 200 and 300 kg ha-1) and K (0, 80, 160 and 240 kg ha-1), as well as absence and presence of organic compost (30 t ha-1). The following parameters were evaluated: plant height, stem diameter, number of leaves, production of fruits plant-1, number of fruits plant-1, fruit length and diameter and fruit quality (pH, soluble solids, titratable acidity, vitamin C and electrical conductivity). The crop is demanding in terms of K and N fertilizations, with increments of 15.8 and 36% in the mean number and diameter of fruits, respectively. Organic fertilization did not influence the vegetative growth of okra, but was beneficial to the production of fruits with higher vitamin C content, 52% higher than the contents found in fruits produced without such input.

scholarly journals Productivity and quality of sweet potato roots propagated by mini-cuttings with different trays and seedling ages

2021 ◽  
Vol 39 (2) ◽  
pp. 140-145
Author(s):  
Antonio Ismael Inácio Cardoso ◽  
Maurício D Nasser ◽  
Pâmela G Nakada-Freitas ◽  
Rogério L Vieites ◽  
Bruno NM Martins ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Block Design ◽  
Titratable Acidity ◽  
Dry Weight ◽  
Root Production ◽  
Total Sugars ◽  
Randomized Block Design ◽  
Different Types ◽  
Number Of Leaves

ABSTRACT The use of mini-cuttings is an option for obtaining sweet potato propagules of excellent quality. The objective of this research was to evaluate the production and quality of sweet potato roots propagated by mini-cuttings in different types of trays and ages of seedlings. Six treatments, resulting from the factorial 2x3, were evaluated: two types of trays (162 and 200 cells, with 31 and 18 mL of substrate per cell, respectively) and three ages of seedlings (39, 46 and 53 days after placement of mini-cuttings in trays), in a randomized block design, with five replications. Seedlings characteristics, production and quality of roots were evaluated. Higher number and dry weight of leaves per seedling were observed in the tray with 162 cells than in trays with 200 cells. The younger seedlings (39 days) had a lower number of leaves, dry weight of leaves, stem, roots ant total (leaves + stem + roots) than seedlings of other ages. There was no difference in root production depending on the type of tray, regardless of the age of the seedlings. For the 162-cell tray, the age of the seedlings did not affect the production of roots. On the other hand, for the 200-cell tray, higher roots production was observed on seedlings 39 days age compared to seedlings with 53 days. No differences were observed among the roots of different treatments for titratable acidity, and levels of sucrose, reducing sugars ant total sugars. It is recommended to avoid old seedlings, that is, it is recommended to use seedlings with a maximum of 43 days after planting of mini-cuttings for trays with 200 cells, while for trays with 162 cells no difference in root production was observed with the different ages of the seedlings.

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 Oxyfertigation and Transplanting Conditions of Strawberries

Agronomy ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 2513
Author(s):  
Pedro Palencia ◽  
Fátima Martínez ◽  
Miguel A. Vázquez
Keyword(s):  
Block Design ◽  
Fruit Size ◽  
Titratable Acidity ◽  
Fruit Weight ◽  
H2o2 Treatment ◽  
Plant Yield ◽  
Crown Diameter ◽  
Randomized Block Design ◽  
Soluble Solid ◽  
Crop Cycle

Soilless growing systems can improve water-use efficiency, especially in closed soilless growing systems. The main purpose of this study was to evaluate the effects of different transplanting conditions, and determine how supplying H2O2 as an oxygen source to the rhizosphere of strawberry plants in a soilless growing system affects plant growth, fruit yield and fruit quality. Strawberry plants (Fragaria x ananassa Duch.) cv. ‘Fortuna’ were cultivated in 12 L pots filled with peat substrate, and maintained under conditions of natural light and temperature. Treated plants were supplied with hydrogen peroxide (H2O2) (H1) and control plants did not receive H2O2 (H0). In terms of the transplanting conditions, the plants were transplanted in October (T1), and either maintained in a culture chamber (T2), or refrigerated (T3), for one month, before being transplanted. A completely randomized block design with two treatment factors (transplanting conditions, and H2O2 treatment) and five replications was established. Then, we determined the fruit per plant, yield per plant (g plant−1), fruit weight (g fruit−1), fruit size (mm), SPAD values, crown number, crown diameter (mm), flower number, firmness (g cm−1), pH, total soluble solid (TSS), titratable acidity (TA) and TSS/TA. During the early crop cycle, there were not significant differences between treatment and the transplanting conditions that significantly affected the fruit weight and fruit size, although T3 produced the highest values. During the late crop cycle, the H2O2 treatment affected fruit per plant, yield per plant (g plant−1), and crown diameter, with H1 producing the highest values. Furthermore, the transplanting conditions affected yield per plant (g plant−1), old SPAD values, crown diameter, firmness, TSS, TA and TSS/TA.

scholarly journals Pembuahan Jeruk Siam (Citrus microcarpa L.) di Luar Musim dengan Perlakuan Induksi Pembungaan dan Zat Pemecah Dormansi

2021 ◽  
Vol 11 (1) ◽  
pp. 10
Author(s):  
I WAYAN RUMADA ◽  
I NYOMAN RAI ◽  
RINDANG DWIYANI
Keyword(s):  
Fruit Quality ◽  
Block Design ◽  
Fruit Weight ◽  
Dormancy Breaking ◽  
Flowering Induction ◽  
Combination Treatments ◽  
Randomized Block Design ◽  
Two Factors ◽  
Soluble Solid

Fertilization outside the season of Siam Orange (Citrus microcarpa L.) with Induction of Flowering and Dormancy Breaking Substances. The Siam orange (Citrus microcarpa L.) produces seasonal fruit with the on-season harvest from July to August while the off-season harvest, i.e. from February to September there is hardly any fruit, or very limited supply. The purpose of this study was to examine the response of flowering induction and dormancy-breaking substances to produce off-season fruits of Siam orange. This research began in April to December 2016. The experiment was arranged factorially with two factors using a randomized block design (RBD), with nine combination treatments and six replications. Flowering induction factors consist of three levels, namely Ik = Control, IP = Paclobutrazol at a dose of 7.5 g/l, and Im = cutting the tip of dormant twigs. Dormancy-breaking substances factor consists of three levels, namely Dk = Control, Db = BAP 200 ppm, and Dn = KNO3 300 ppm. The results of the experiment showed that the highest fruit weight per tree at off-season production was obtained by induction with paklobutrazol (28.86 kg) and the lowest was in control (12.75 kg). Flowering induction treatments was not significantly different effect on fruit quality of Siam orange, represented by weight per fruits, fruit diemater, total soluble solid and vitamine C content was not siginificant different among levels of treatment. Dormancy-breaking substances treatment also not significantly effect on fruit quality of Siam orange. Based on this research it is recommended to induce flower for off-season produce of Siam orange by pruning the tips of dormant twigs or by using paklobutrzol.

The Harvest Season Changes the Organoleptic Properties of Onion during Storage

2019 ◽  
pp. 1-9
Author(s):  
Ariana Pereira Mota ◽  
Renata Ranielly Pedroza Cruz ◽  
Ana Paula Sato Ferreira ◽  
Mateus De Paula Gomes ◽  
Maria Eduarda da Silva Guimarães ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Reducing Sugars ◽  
Block Design ◽  
Soluble Sugars ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Organoleptic Properties ◽  
Post Harvest ◽  
Randomized Block Design

Aims: The objective was to determine the influence of the onion harvest time "Baia Periforme" on post-harvest quality of the bulbs during storage. Study Design: The experiment was conducted in a randomized block design with three treatments, six replicates with two bulbs each. Place and Duration of Study: Departamento de Fitotecnia, Universidade Federal de Viçosa, between June 2017 and July 2018. Methodology: Seedlings, 20 days old, were transplanted into 20 cm spacing between rows and 10 cm between plants. The bulbs were harvested 120 days after transplanting with manual tipping of the pseudo-stem (T1), with 50 (T2) or 75% (T3) of the bulbs popped. The soluble sugars (SS), non-reducing sugars (NRS), reducing sugars (RS), total soluble solids (TSS), titratable acidity of phenolic compounds and alinase activity was determined every 30 days for 90 days. Results: The content of SS, TSS, phenolic compounds and alinase activity increased in the onions of T2, resulting in more sweet and pungent bulbs due to the higher content of acidity and phenolic compounds. Conclusion: The post-harvest quality of onion bulbs "Baia Periforme" was maintained when they were harvested with 50% of bulbs popped.

scholarly journals STUDI PEMBUATAN TABLET EFFERVESCENT DENGAN EKSTRAK BUNGA MAWAR MERAH (Rosa sp.) PADA PASCA POTONG BUNGA MAWAR DAN JENIS FILLER (NaHCO3, KHCO3, CaCO3)

AGRICA ◽  
2020 ◽  
Vol 4 (1) ◽  
pp. 9-37
Author(s):  
Theovilla R. Rianty Dami
Keyword(s):  
Water Quality ◽  
Water Content ◽  
Block Design ◽  
Soluble Solid Content ◽  
Colour Intensity ◽  
Post Harvest ◽  
Randomized Block Design ◽  
Soluble Solid ◽  
Pigment Extract

Red roses  (Rosa sp)  are a  decorative plant species.  Their petals contain the pigment anthocyanin, which is classified as a flavonoid and is able to capture free radicals.  Due to their popularity, roses are an abundant resource and can be processed into effervescent drink tablets. This study aims to investigate the influence of time after harvest and filler type on the quality of the red rose extract powder, on effervescent tablets made from the said extract and on effervescent drink quality. The study was conducted in two stages. Phase I tested the quality of pigment extract of hybrid varieties of Dutch roses.  Three post-harvest durations were tested using a Randomized Block Design: fresh, or 0 days after harvesting (U0), 2 days after harvesting (U1) and 4 days after harvesting (U2). Phase II used a Randomized Block Design arranged in factorial to test rose extracts taken from flowers at 3 post-harvest durations (U0, U1, U2) in combination with 3 different filler types [NaHCO3 (N0), KHCO3 (N1), CaCO3 (N2)]. Resulting pigment extracts were analyzed for water quality, pigment quality, pH, and colour intensity.  Effervescent tablets made from the various pigment extracts were also measured for water quality,  sugar level,  pH, moisture content, tablet density, and colour intensity. Study findings revealed that time after harvest affected pigment extract pH, absorbance, light (L), and red (a+)/yellow (b+) colour intensity, while water content and soluble solid content and quantity were unaffected. Analysis of effervescent tablets found that time after harvest, was linked to differences in water content, texture,  light intensity (L) and red  (a+)/yellow (b+) intensity while there was no effect on moisture level.   Analysis of effervescent tablet drinks found that harvest time and filler type affected pH, dissolution speed, colour intensity and flavour. However, neither time after cutting nor filler type had a significant effect on the quantity of soluble solid, colour, appearance or taste of the drinks.

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.

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