Production and quality of okra produced with mineral and organic fertilization

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.

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

Horticultura Brasileira ◽

10.1590/s0102-0536-20210203 ◽

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.

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Quality of Italian tomatoes grown with different forms of calcium application

Research Society and Development ◽

10.33448/rsd-v9i12.10837 ◽

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.

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Agronomic performance of fig plants grown with different numbers of branches

10.7764/ijanr.v48i1.2212 ◽

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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The Harvest Season Changes the Organoleptic Properties of Onion during Storage

Journal of Experimental Agriculture International ◽

10.9734/jeai/2019/v33i130136 ◽

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.

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SOIL MULCHING AND DEFICIT IRRIGATION WITH WASTEWATER IN THE QUALITY OF ITALIAN ZUCCHINI

JOURNAL OF NEOTROPICAL AGRICULTURE ◽

10.32404/rean.v7i3.4411 ◽

2020 ◽

Vol 7 (3) ◽

pp. 73-80

Author(s):

Carolina Carvalho Rocha Sena ◽

Anamaria Achtschin Ferreira ◽

Zeuxis Rosa Evangelista ◽

Kari Katiele Souza Araujo

Keyword(s):

Block Design ◽

Titratable Acidity ◽

Soluble Solids ◽

Microbiological Analysis ◽

Black And White ◽

Randomized Block Design ◽

Irrigation Depth ◽

Evaporation Pan ◽

Solids Content

Conscious agricultural management, which aims to conserve natural resources, has been the target of contemporary agriculture. In this context, the reuse of water in deficit water depth in agricultural irrigation becomes a viable technique, and this work aimed to evaluate the effect of different irrigation depths with wastewater and soil mulching on the microbiological and postharvest characteristics of the Italian zucchini. The experiment was conducted in the field conditions with a randomized block design in a split-plot arrangement. Four irrigation depths (100%, 85%, 70%, and 55% of the estimated ETc from the Class A Evaporation Pan) and three types of soil mulching (rice husk, double-sided black and white polyethylene film, and uncovered soil) were analyzed. Texture, titratable acidity (TA), soluble solids content (ºBrix), pH, and the ºBrix:TA ratio of the Italian zucchini were analyzed, besides the microbiological analysis. The irrigation depth or soil mulching did not influence the pH of the Italian zucchini. The uncovered soil promoted higher titratable acidity to the Italian zucchini. The texture of the fruit, the soluble solids, and the ºBrix:TA ratio was influenced by the types of soil mulching and irrigation depths. The use of wastewater for drip irrigation reduces the effects of the microbial load on the crop.

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Influence of Seasonality in the Production and Quality of Annona squamosa L. Fruit of Different Sizes

HortScience ◽

10.21273/hortsci14116-19 ◽

2019 ◽

Vol 54 (8) ◽

pp. 1345-1350

Author(s):

Elias A. Moura ◽

Pollyana C. Chagas ◽

Edvan A. Chagas ◽

Railin R. Oliveira ◽

Raphael H. Siqueira ◽

...

Keyword(s):

Block Design ◽

Titratable Acidity ◽

Fruit Production ◽

Apple Fruit ◽

Size Class ◽

Soluble Solids ◽

Plant Production ◽

Organoleptic Quality ◽

Randomized Block Design

Sugar apple fruit are widely appreciated because of their flavor and functional qualities. However, the final value of the fruit varies according to its physical, physicochemical, and organoleptic qualities. The production and attributes that make up the quality of fruit can be influenced by climatic seasonality in both seasons (dry and wet). Therefore, this work aimed to evaluate whether the production and quality of fruit production of different size classes of A. squamosa L. in two seasons are affected by climatic seasonality. The experiment consisted of a randomized block design, with 4 blocks and 10 plants per block. The variables evaluated were number of fruit per hectare, production, and yield. The postharvest evaluation of the fruit consisted of a completely randomized experimental design, in a 3 × 2 factorial scheme, which referred to the three sizes and two seasons, and evaluated fruit length and diameter; firmness; fruit, bark, and seed weight; number of seeds; soluble solids; hydrogen ionic potential (pH); titratable acidity (TA); and ratio. The 2014 season had larger fruit in relation to those of the 2015 season; conversely, it showed a lower number of fruit per plant, production, and yield, besides inferior organoleptic quality. Fruit of size class 2 stood out in the 2014 season because of their physical characteristics. However, they had inferior organoleptic quality when compared with fruit of the same size collected during the 2015 season. Fruit of size class 3 (≥8.1 cm) had greater firmness, providing longer durability and shelf life.

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Can Sustained Deficit Irrigation Save Water and Meet the Quality Characteristics of Mango?

Agriculture ◽

10.3390/agriculture11050448 ◽

2021 ◽

Vol 11 (5) ◽

pp. 448

Author(s):

Leontina Lipan ◽

Aarón A. Carbonell-Pedro ◽

Belén Cárceles Rodríguez ◽

Víctor Hugo Durán-Zuazo ◽

Dionisio Franco Tarifa ◽

...

Keyword(s):

Irrigation Water ◽

Deficit Irrigation ◽

Block Design ◽

Water Productivity ◽

Titratable Acidity ◽

Soluble Solids ◽

Total Phenolic ◽

Drought Tolerant ◽

Randomized Block Design ◽

Peel Color

Mango is one of the most cultivated tropical fruits worldwide and one of few drought-tolerant plants. Thus, in this study the effect of a sustained deficit irrigation (SDI) strategy on mango yield and quality was assessed with the aim of reducing irrigation water in mango crop. A randomized block design with four treatments was developed: (i) full irrigation (FI), assuring the crop’s water needs, and three levels of SDI receiving 75%, 50%, and 33% of irrigation water (SDI75, SDI50, and SDI33). Yield, morphology, color, titratable acidity (TA), total soluble solids (TSS), organic acids (OA), sugars, minerals, fiber, antioxidant activity (AA), and total phenolic content (TPC) were analyzed. The yield was reduced in SDI conditions (8%, 11%, and 20% for SDI75, SDI50, and SDI33, respectively), but the irrigation water productivity was higher in all SDI regimes. SDI significantly reduced the mango size, with SDI33 generating the smallest mangoes. Peel color significantly changed after 13 days of ripening, with SDI75 being the least ripe. The TA, AA, and citric acid were higher in SDI75, while the TPC and fiber increased in all SDI levels. Consequently, SDI reduced the mango size but increased the functionality of samples, without a severe detrimental effect on the yield.

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Quality of Tomato (Solanum lycopersicum L.) Due to Grafting in Solanaceae of Different Species

Journal of Agricultural Science ◽

10.5539/jas.v11n3p188 ◽

2019 ◽

Vol 11 (3) ◽

pp. 188

Author(s):

João Lucas Moraes Vieira ◽

Rogério Eiji Hanada

Keyword(s):

Block Design ◽

Tomato Fruit ◽

Titratable Acidity ◽

Soluble Solids ◽

Control Treatment ◽

Tomato Cultivar ◽

Tomato Crop ◽

Significant Difference ◽

Four Blocks

The present work had as objective to evaluate the physical-chemical characteristics of commercial tomato fruits grafted on different solanaceous species. The experiment was conducted in a greenhouse, in a randomized complete block design, with four blocks and six treatments, being the rootstocks: cocona (Solanum sessiliflorum); two cultivars of eggplant (Solanum aethiopicum), Long Light Green and Big Hill; jurubebão (Solanum lycocarpum) and jurubeba juna (Solanum stramonifolium), grafted with the tomato cultivar Santa Cruz Kada, and the control treatment was represented by the self-grafted tomato. Three consecutive harvests were spaced seven days after the production stabilization, and the characteristics fruits analyzed were Total Soluble Solids (ºBrix), pH, Titratable Acidity (percentage of citric acid) and TSS/TA. A statistically significant difference was found in the Tukey’s test at 5% probability in the titratable acidity, pH and fruit pulp flavor, among the evaluated treatments, while the soluble solids content did not differ between treatments in any of the harvests, but the values remained within the considered adequate for the tomato in natura in the current literature. There was a decrease in fruit flavor in all treatments, and fruit pH drop in all treatments with the exception of jurubebão, with the advancement of plant age, while the titratable acidity had an inverse behavior. The evaluated rootstocks can be used in the tomato crop, without prejudice to the quality of the tomato fruit produced.

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Melon fruit yield and quality as a function of doses and times of biostimulant application

Research Society and Development ◽

10.33448/rsd-v9i7.3911 ◽

2020 ◽

Vol 9 (7) ◽

pp. e130973911

Author(s):

Roberto Cleiton Fernandes de Queiroga ◽

Zaqueu Lopes da Silva ◽

Odair Honorato Oliveira de ◽

Elidayane da Nóbrega Santos ◽

Higínio Luan Oliveira Silva ◽

...

Keyword(s):

Block Design ◽

Fruit Production ◽

Soluble Solids ◽

Application Time ◽

Time Of Application ◽

Yield And Quality ◽

Randomized Block Design ◽

Semi Arid Region ◽

Fruit Mass

The objective of this study was to evaluate the productivity and quality of melon fruits as a function of the dose and time of application of biostimulant in the conditions of the semi-arid region of Paraíba. The experiment was carried out at the Federal University of Campina Grande, campus of Pombal - PB, Brazil, in a randomized block design in a 4 x 5 split plot scheme, with doses of biostimulant (0; 0.5; 1.0; 1, 5 and 2.0 L ha-1) and in the subset of the biostimulant application times (15; 20; 25 and 30 days before harvest - DAC), in four replications. Characteristics related to fruit production and quality were evaluated. There was no interaction between the factors of dose and application time of the biostimulant in any of the evaluated characteristics. Thus, the highest estimated values of number of fruits per plant, fruit mass and total melon production were obtained with the application of doses ranging from 0.9 to 1.5 L ha-1 and at the time of application it varied from 22,5 to 23.6 DAC. The content of soluble solids increased 5.5% when the biostimulant dose of 2.0 L ha-1 was used and 4.4% when the product was applied 15 days before harvest.

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PEMANFAATAN EKSTRAK BELIMBING WULUH DAN EKSTRAK KULIT BUAH NAGA DALAM PEMBUATAN SELAI

Jurnal Agrotek UMMat ◽

10.31764/jau.v8i2.4527 ◽

2021 ◽

Vol 8 (2) ◽

pp. 62

Author(s):

Nurul Aini ◽

Dody Handito ◽

Siska Cicilia

Keyword(s):

Antioxidant Activity ◽

Vitamin C ◽

Block Design ◽

Fruit Peel ◽

Significance Level ◽

Randomized Block Design ◽

Dragon Fruit ◽

Significant Difference ◽

Sensory Tests

This study aims to determine the concentration of starfruit juice and dragon fruit peel on the quality of jam. The experimental design used was a one-factor Randomized Block Design (RAK) with six treatments and three replications to obtain 18 samples. The treatments were the concentration of starfruit juice and dragon fruit peel extract with P1 (100% : 0%), P2 (85% : 15%), P3 (70% : 15%), P4 (55% : 45%), P5 ( 40% : 60%) and P6 (25% : 75%). Parameters observed were vitamin C levels, antioxidant activity, spread, and color as well as sensory tests (color, aroma, and taste). Data analysis results were tested by analysis of variance at a significance level of 5% using Co-Stat software. If there is a significant difference, then the orthogonal polynomial further test is carried out, while the physical and sensory tests are further tested using the Honest Significant Difference test at a significance level of 5%. The results showed that the concentration of star fruit juice and dragon fruit pulp did not have a different effect on vitamin C levels but had a significantly different effect on antioxidant activity, spread, and color. P6 treatment resulted in the highest antioxidant activity of 77.27%, 12.80 mg of vitamin C content, 10.1 cm of smearing power, and sensory properties that were acceptable to the panelists.

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