scholarly journals Fruit size, mineral composition and quality of trickle-irrigated tomatoes as affected by potassium rates

2000 ◽  
Vol 35 (1) ◽  
pp. 21-25 ◽  
Author(s):  
Paulo Cezar Rezende Fontes ◽  
Regynaldo Arruda Sampaio ◽  
Fernando Luiz Finger
Keyword(s):  
Mineral Composition ◽  
Block Design ◽  
Large Diameter ◽  
Fruit Size ◽  
Beta Carotene ◽  
Soluble Solids ◽  
Potassium Fertilizer ◽  
Randomized Block Design ◽  
Fertilizer Rates

An experiment was conducted to determine the fruit size, mineral composition and quality of trickle-irrigated tomatoes as affected by potassium fertilizer rates. Six potassium (K) rates were applied as KCl, corresponding to 0, 48.4, 118.6, 188.8, 259.0 and 399.4 kg ha-1, with four replicates, following a randomized block design. Quadratic responses to K rates were observed for double extra large (diameter > 60 mm), extra large (56 to 60 mm) and large (52 to 56 mm) fruit yields. Maximum yields of these classes were achieved with K rates of 116, 190 and 233 kg ha-1, respectively. Fruit dry matter, phosphorus, sulfur and magnesium contents were not affected by K rates, but nitrate and K contents showed significant increments as K rates were increased. Vitamin C, total soluble solids, lycopene and beta-carotene contents in the fruits were not affected by K rates. Increments in the K rate lowered the fruit pH and increased total acids content.

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

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.

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 Effects of Fruit Thinning and Main Stem Pruning in Melon Crops

2019 ◽  
pp. 1-10
Author(s):  
Gleyce Lacerda da Silva ◽  
Roberto Cleiton Fernandes Queiroga ◽  
Francisco Hevilásio Freire Pereira ◽  
Francimalba Francilda de Sousa ◽  
Zaqueu Lopes da Silva ◽  
...  
Keyword(s):  
Leaf Area ◽  
Block Design ◽  
Soluble Sugars ◽  
Main Stem ◽  
Soluble Solids ◽  
Fruit Thinning ◽  
Randomized Block Design ◽  
Total Productivity ◽  
Set Up

Objective: This study aimed to assess the productivity and quality of a melon crop treated with fruit thinning and main stem pruning under field conditions. Experimental Design: The treatments comprised the amount of fruit thinning in the plant (one, two and without thinning) and the period of main stem pruning (35, 40, 45 and 50 days after transplanting - DAT). The crop was set up in a randomized block design factorial of type 3x4, with five replications. Location and Duration of the Study: The experiment carried out at the Center for Agrifood Science and Technology (CCTA) of the Federal University of Campina Grande (UFCG), Campus Pombal - PB, Brazil, from December 2016 to February 2017. Methodology: The Hopey King hybrid of the Cantaloupe group was cultivated at a spacing of 2.0 x 0.4 m. Results: The plants without thinning of fruits provided lower values ​​of leaf area and fruits of lower mass. However, due to their higher quantity per hectare, the crop total productivity was high. On the other hand, plants with fewer fruits had the highest values ​​of soluble solids, total and non-reducing soluble sugars. The leaf area, fruit mass, total productivity, and the concentration of reducing and non-reducing soluble sugars were higher when the plants were pruned at 35 DAT. Conclusion: The fruit thinning and main stem pruning affected the production and quality of melon fruits significantly. For more demanding markets, we recommend to treat the plants with one or two fruits and prune at 35 days after transplantation, aiming to enhance the quality variables.

scholarly journals Yield and quality of melon under silicon doses and irrigation management in a greenhouse

2018 ◽  
Vol 48 (2) ◽  
pp. 140-146
Author(s):  
Cláudia Salim Lozano ◽  
Roberto Rezende ◽  
Tiago Luan Hachmann ◽  
Fernando André Silva Santos ◽  
Marcelo Zolin Lorenzoni ◽  
...  
Keyword(s):  
Nutrient Management ◽  
Block Design ◽  
Irrigation Management ◽  
Soluble Solids ◽  
Irrigation Level ◽  
Yield And Quality ◽  
Randomized Block Design ◽  
Maturation Index ◽  
Irrigation Levels

ABSTRACT The netted melon requires special growing conditions, including a protected environment, an adequate staking system and proper water and nutrient management. This study aimed to assess the effect of irrigation levels and silicon doses on the yield and quality of Sunrise hybrid melons, in a greenhouse. A randomized block design was used, with a 5 x 3 factorial scheme and four replications. The first factor consisted of five silicon doses (0 kg ha-1, 50 kg ha-1, 100 kg ha-1, 150 kg ha-1 and 200 kg ha-1) and the second of three irrigation levels (40 %, 70 % and 100 % of the ETc). The results demonstrated that the applied irrigation levels and silicon doses have no influence on the yield traits of melon plants. The irrigation level corresponding to 100 % of the ETc promotes higher values for soluble solids (9.86 ºBrix) and maturation index (114.9) on fruits. The increase of silicon doses up to 200 kg ha-1 also increases the maturation index in the treatment with the greatest irrigation level and reduces this index at the shallowest level applied.

scholarly journals Post-harvest quality of ‘Vitória’ pineapple as a function of the types of shoots and age of the plant for floral induction

2018 ◽  
Vol 40 (4) ◽  
Author(s):  
Dayane Littig Barker ◽  
Sara Dousseau Arantes ◽  
Edilson Romais Schmildt ◽  
Lúcio de Oliveira Arantes ◽  
Patrícia Soares Furno Fontes ◽  
...  
Keyword(s):  
Significant Interaction ◽  
Floral Induction ◽  
Block Design ◽  
Soluble Solids ◽  
Post Harvest ◽  
Randomized Block Design ◽  
Different Types ◽  
Crown Biomass ◽  
Induction Times

Abstract For the production and quality of pineapple fruits, the appropriate choice of the type of propagule to be used combined with the management of the ages for floral induction are important factors to reach the maximum of desirable characteristics that will define the success in the production of the pineapple and its good acceptance in the market. The objective of this research was to evaluate the post-harvest quality of fruits developed from different types of shoots and ages of floral induction of ‘Vitória’ pineapple. The experiment was carried out in a complete randomized block design with four replications. The plots were made up of the shoots (slip and sucker) and the subplots were composed of the different ages of floral induction (8, 10 and 12 months after planting and natural flowering). Evaluations of biomass characteristics of fruits with and without crown, circumference, length, diameter, firmness, translucency, pulp color and physicochemical quality were performed. No significant interaction was observed for the biometric and biomass variables, and the type of shoots influenced only the crown biomass and the central cylinder diameter, which were higher in the slips. In addition, for the attributes color, translucent area and firmness, no interaction was found, and they were influenced only by the induction times, except for the variable color referring to the intensity of green and red colors. Regardless of the types of the shootss evaluated in the environmental conditions of planting carried out in April 2015, the fruits originated from natural inductions and inductions at 12 months presented greater firmness, a desirable characteristic for export and industrialization, mainly for the processing of slices of pineapple, pieces in syrup and crystallized. The slips natural induced and induced at 12 months provided fruits with a greater ratio between soluble solids and acidity.

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 west indian cherry irrigated with saline waters under combinations of nitrogen/potassium fertilization

2020 ◽  
Vol 36 (4) ◽  
Author(s):  
Evandro Manoel Da Silva ◽  
Hans Raj Gheyi ◽  
Reginaldo Gomes Nobre ◽  
Joicy Lima Barbosa ◽  
Bárbara Genilze Figueiredo Lima Santos ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Irrigation Water ◽  
Block Design ◽  
Fruit Size ◽  
West Indian ◽  
Titratable Acidity ◽  
Fruit Shape ◽  
Soluble Solids ◽  
Potassium Fertilization

West Indian cherry stands out among the fruits cultivated for the pharmacological and alimentary importance, but its quality can be affected by irrigation water salinity and fertilization management. In this context, this research aimed to study the effect of irrigation water of different salinities and combinations of nitrogen and potassium fertilization on the physical and physico-chemical quality of bioactive compounds in West Indian cherry fruits. The experiment was carried out in the field, using lysimeters of 60 L, in the Experimental Area of the Centro de Ciências e Tecnologia Agroalimentar (CCTA) of Universidade Federal de Campina Grande (UFCG), Pombal, PB, in a randomized block design, with treatments arranged in a 5 x 4 factorial scheme, referring to five irrigation water salinities (ECw): 0.3, 1.3, 2.3, 3.3 and 4.3 dS m-1 and four combinations (C) of doses of nitrogen (N) and potassium (K2O): C1 = 70% N + 50% K2O; C2 = 100% N + 75% K2O; C3 = 130% N + 100% K2O and C4 = 160% N + 125% K2O, of the recommended dose for West Indian cherry, with three replicates and one plant per plot consisting of a lysimeter. The cv. Flor Branca grafted on cv. Junco was used in the study. The increase in salinity of irrigation water reduced the size, weight and vitamin C content of the fruits, but, the combinations of N and K fertilization did not affect fruit shape and the content of anthocyanin, carotenoids, pH, titratable acidity, total soluble solids and fruit flavor. Fertilization combinations consisting of C1 and C2 treatments promoted the largest fruit size under irrigation with ECw of up to 1.3 dS m-1 and greater mass accumulation. Fertilization doses above C2 combinations negatively affected fruit quality.

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 Impact of intercropping on yield, fruit quality and economics of young Kinnow mandarin plants

2018 ◽  
Vol 10 (3) ◽  
pp. 954-957 ◽  
Author(s):  
Mandeep Singh Gill ◽  
Savreet Khehra ◽  
Navjot Gupta
Keyword(s):  
Fruit Quality ◽  
Block Design ◽  
Chemical Properties ◽  
Soluble Solids ◽  
Rough Lemon ◽  
Randomized Block Design ◽  
Physico Chemical ◽  
Ground Coverage ◽  
Kinnow Mandarin

Intercropping practices in orchard not only generate an extra income but the practice also helps to check the soil erosion through ground coverage and improves the physico-chemical properties of the soil.. The effect of intercrops on vegetative performance and quality of 5 years old Kinnow mandarins raised on Rough Lemon rootstocks at 6x6m spacing was studied at RRS, Bathinda during the year 2011-12 and 2012-13. An intercropping experiment comprising of seven treatments such as T1: guara (Summer) + wheat (winter), T2: guara (summer) + barley (winter), T3: guara (summer) + fenugreek (winter), T4: moong (summer) + wheat (winter), T5: moong (summer) + barley (winter), T6: moong (summer) + fenugreek (winter) and T7: control (fallow: no intercrop) was laid out in Randomized Block Design with four replications to assess the effect of various intercrops on the performance of Kinnow in arid irrigated region of Bathinda, Punjab. The results of the study revealed that guar + wheat intercropping system exhibited better performance which has been reflected in the form of plant  height (3.31 cm), gross income (Rs. 41180/-), fruit number (175) and Total Soluble Solids(TSS) per cent (10.8) of Kinnow fruit. The work concludes that intercropping in Kinnow mandarin helps to improve yield, fruit quality and economic aspect. 

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

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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