scholarly journals EFEITO DA FRAÇÃO DE ÁREA MOLHADA POR GOTEJAMENTO NA CULTURA DA MELANCIA

Irriga ◽  
2019 ◽  
Vol 1 (1) ◽  
pp. 25-30
Author(s):  
Allan Cunha Barros ◽  
FERNANDA FERREIRA DA SILVA ◽  
PAULO HENRIQUE VIEIRA ARAÚJO ◽  
Lucas Melo Vellame ◽  
THYAGO DA SILVA PINHEIRO ◽  
...  
Keyword(s):  
Citrullus Lanatus ◽  
Soil Water Potential ◽  
Crop Productivity ◽  
Water Relation ◽  
Soluble Solids ◽  
Soluble Solids Content ◽  
Statistical Comparison ◽  
Randomized Design ◽  
Solids Content ◽  
E Mail

EFEITO DA FRAÇÃO DE ÁREA MOLHADA POR GOTEJAMENTO NA CULTURA DA MELANCIA     ALLAN CUNHA BARROS¹; FERNANDA FERREIRA DA SILVA²; PAULO HENRIQUE VIEIRA ARAÚJO²; LUCAS MELO VELLAME³; THYAGO DA SILVA PINHEIRO² E ANTÔNIO LUCRÉCIO DOS SANTOS NETO¹   [1] Prof. Doutor, Universidade Federal de Alagoas, Av. Manoel Severino Barbosa - Bom Sucesso, Arapiraca - AL, 57309-005. e-mail: [email protected], [email protected] [1] Acadêmico(a) Agronomia, Universidade Federal de Alagoas, Av. Manoel Severino Barbosa - Bom Sucesso, Arapiraca - AL, 57309-005. e-mail: [email protected]; [email protected]; [email protected] 3 Prof. Doutor, Depto de Engenharia Agrícola, Universidade Federal Rural da Bahia, Rua Rui Barbosa, 710 - Centro - Cruz das Almas/BA - 44.380-000. e-mail: [email protected]     1 RESUMO   O objetivo do trabalho foi avaliar o efeito da porcentagem de área molhada (PW) na produtividade e relação hídrica na cultura da melancia (Citrullus lanatus). O experimento foi realizado no campo experimental da UFAL, Campus Arapiraca – UFAL. Os tratamentos foram em delineamento inteiramente casualizados, composto por gotejadores com duas vazões (1,39 L h-1 e 1,92 L h-1), sendo duas com linhas simples e duas com linhas duplas, totalizando quatro tratamentos (PW – 13, 14,25, 19 e 22%), com seis repetições. Foram feitas leituras com tensiômetros para monitorar o potencial de água no solo e termômetro de infravermelho para monitorar a temperatura na folha. Foram, ainda, avaliados índices fitotécnicos (teste de Tukey, 5%). Com base na análise dos resultados não foi observada diferenciação estatística para os atributos verificados, que foram eles: massa fresca, teor de sólidos solúveis, diâmetro e comprimento do fruto. As curvas de temperatura não indicaram estresse hídrico para nenhum tratamento. O T1 absorveu mais água em profundidade. Conclui-se que valores de PW abaixo do recomendado não afetam a produtividade da cultura da melancia e que a porcentagem de área molhada influencia as profundidades de absorção de água pela cultura.   Palavras-Chave: termometria, porcentagem de área molhada, bulbo molhado     BARROS, A. C.; SILVA; F. F.; ARAÚJO. P. H. V.; VELLAME, L. M.; PINHEIRO, T. S.; SANTOS NETO, A. L.  EFFECT OF FRACTING OF WET AREA BY DRIP IRRIGATION IN WATERMELON     2 ABSTRACT   The objective of this work was to evaluate the effect of PW on productivity and water relation on watermelon culture (Citrullus lanatus). The experiment was carried out in the experimental field of UFAL, Campus Arapiraca - UFAL. The missiles were completed in a randomized design, consisting of drippers with two flows (1.39 L h-1 and 1.92 L h-1), being twice and twice, totaling four treatments (PW - 13, 14, 25, 19 and 22 %), with six replicates. Tensiometers were read out to monitor soil water potential and the infrared thermometer to monitor the temperature on the sheet. Also, phytotechnical indexes were evaluated (Tukey's test, 5%). Based on the analysis of the results, a statistical comparison was not observed for the verified attributes, which were: fresh mass, soluble solids content, fruit diameter and length. As the temperature curves for both treatments are similar for all treatments. T1 absorbed more water in depth. It concludes that PW values ​​below the recommended do not affect crop productivity and that the percentage of water is influenced as depths of water absorption by the crop.   keywords: thermometry, percentage of wet area, wetted volume

Hydrothermic Treatment Effects on Some Ripening Changes on Mango Fruits (Mangifera indica L) `Crillo de Bocado' during Storage: II. Chemical Parameters

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 520e-520
Author(s):  
Juan E Manzano ◽  
Oswaldo Valor
Keyword(s):  
Low Temperature ◽  
Storage Time ◽  
Storage Temperature ◽  
Mangifera Indica ◽  
Soluble Solids ◽  
Soluble Solids Content ◽  
Chemical Parameters ◽  
Randomized Design ◽  
Solids Content ◽  
Green Stage

Mango fruits `Criollo de Bocado' harvested at the mature-green stage were treated with a hydrothermic treatment of 55 °C for 3 min and stored for 20 days at temperatures of 10 ± 2, 15 ± 2 and 28 ± 2 °C. A randomized design 2 × 3 × 4 with three replications was used. Some chemical parameters were analyzed, such as total soluble solids content (% TSS), pH, tritatable acidity, and TSS/tritatable acidity ratio. TSS content increased with storage time at low temperature. The pH increased measurably with storage temperature, while tritatable acidity values results had inconsistent data.

scholarly journals Refrigeration affects the postharvest behavior of 1-methylcyclopropene-treated cape gooseberry (Physalis peruviana L.) fruits with the calyx

2015 ◽  
Vol 33 (3) ◽  
pp. 356-364
Author(s):  
Helber Enrique Balaguera-López ◽  
Claudia Andrea Martínez ◽  
Aníbal Herrera A.
Keyword(s):  
Soluble Solids ◽  
Favorable Effect ◽  
Refrigerated Storage ◽  
Soluble Solids Content ◽  
Physalis Peruviana ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Solids Content ◽  
Cape Gooseberry ◽  
Storage Temperatures

Cape gooseberry fruits are highly perishable with a limited shelf-life. The objective of this study was to evaluate the effect of refrigeration on the postharvest behavior of 1-methylcyclopropene-treated cape gooseberry fruits with the calyx. A completely randomized design with six treatments was used. The treatments were three storage temperatures (2, 6 and 16°C [ambient temperature]) and the application or absence of 1-methylcyclopropene (1-MCP; 1 mL L-1). The fruits were stored for 35 days. The fruits without refrigeration lasted 21 days. During the 35 days of refrigerated storage, the fruits at 2°C with 1-MCP showed a significantly lower respiration rate, color index and total soluble solids content and a higher firmness value and total acidity. Storage at 6°C also generated a favorable effect on the postharvest preservation of cape gooseberry fruits.

scholarly journals A detergent for mango fruit sap-induced injury

2021 ◽  
Vol 5 (5) ◽  
pp. 222-227
Author(s):  
Moomin Abu ◽  
Eric Mwinlanaa Yuoni
Keyword(s):  
Fruit Set ◽  
Block Design ◽  
Soluble Solids ◽  
Soluble Solids Content ◽  
Mango Fruit ◽  
Total Soluble Solids ◽  
Sample Tree ◽  
Randomized Design ◽  
Fruit Samples ◽  
Solids Content

This study determined the optimum concentration of, and duration of immersion in a local detergent (“awabla”) that protected fruit skin of Kent and Keitt mango varieties from mango fruit sap-induced injury (sap-burn) at harvest.The resultant skin/peel colour, pulp colour, and total soluble solids content was also evaluated for fruit quality. Randomized Complete Block Design and Completely Randomized Design with four replications in each case were used for field and laboratory experiments respectively. For each of the two varieties, ten mango trees were sampled at random in each of the four replications of a mango plantation.On each sample tree, twenty panicles all initiating fruit-set were identified and tagged. The number of days from fruit-set to physiological maturity were monitored and harvested for the experiments. Concentrations of 0.25,0.50, and 0.75% of “awabla” solution for 25,30,and35 minutes immersion period in all combinations were established as appropriate and recommended for management of Kent and Keitt mango fruit sap-induced injury. The detergent (“awabla”) had a proven efficacy in the range of 87-94 % for Kent and 90-93 % for Keitt. The resultant peel colour, pulp colour, and total soluble solids content of Kent and Keitt mango fruit samples were not significantly influenced by the treatments at p>0.05.

scholarly journals Gibberellic Acid, Rootstocks, and Post-freeze Fruit Quality of ‘Rohde Red’ Valencia Oranges

HortScience ◽  
2007 ◽  
Vol 42 (3) ◽  
pp. 565-570
Author(s):  
Frederick S. Davies ◽  
Glenn Zalman
Keyword(s):  
Gibberellic Acid ◽  
Titratable Acidity ◽  
Poncirus Trifoliata ◽  
Soluble Solids ◽  
Soluble Solids Content ◽  
Randomized Design ◽  
Citrus Volkameriana ◽  
Solids Content ◽  
Orange Trees ◽  
Juice Content

The authors’ objectives were to determine whether gibberellic acid (GA3) initially increases juice content of ‘Rohde Red’ valencia oranges and prevents or delays decreases in juice content after a freeze, and to determine whether there is an interaction between GA3, rootstock, and juice content. The experiment consisted of a 2 (+, –GA3) × 3 (rootstock) factorial using a completely randomized design with 10 replications per treatment. Gibberellic acid was applied to mature ‘Rohde Red’ valencia [Citrus sinensis (L.) Osb.] orange trees on three rootstocks—Citrus volkameriana Ten. & Pasq.(Volk), Swingle citumelo [C. paradisi Macf. ×Poncirus trifoliata (L.) Raf.], and Carrizo citrange [C. sinensis ×P. trifoliata]—at color break in Fall 2002, 2003, and 2004. Juice content, soluble solids content (SSC), titratable acidity (TA), ratio of SSC to TA, and kilogram solids per box were determined at about 2-week intervals after several freezes. In 2002–03 and 2004–05, juice content in the fall was greater and the rate of decrease in juice content lower for GA3-treated fruit than nontreated fruit for about 8 weeks after a freeze. In contrast, in 2003–04, juice content and rate of decrease in juice content were not different between treatments. Juice content was lower for fruit from ‘Rohde Red’ trees on Volk compared with those on Carrizo and Swingle, and more important, the rate of decrease in juice content after a freeze was greatest for trees on Volk in all three seasons. Soluble solids content, TA, SSC-to-TA ratio, and kilogram solids generally were not effected by GA3 treatment. Therefore, GA3 application at color break in the fall generally increased juice content and slowed the rate of decrease in juice content after a freeze compared with nontreated fruit. In addition, juice content differed significantly with rootstock, but there was no GA3 × rootstock interaction.

scholarly journals Soluble solids monitored in the clusters in minitomato hybrids from dwarf lines

Agrarian ◽  
2019 ◽  
Vol 12 (43) ◽  
pp. 33-39
Author(s):  
Rafael Resende Finzi ◽  
Guilherme Repeza Marquez ◽  
Gabriel Mascarenhas Maciel ◽  
Maurício Pivetta Momesso ◽  
Lucas Medeiros Pereira ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
New Technologies ◽  
Soluble Solids ◽  
Fundamental Characteristic ◽  
Soluble Solids Content ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Set Up ◽  
Solids Content ◽  
Generalized Distance

On minitomatoes, the soluble solids content (SSC) is a fundamental characteristic for commercialization. Therefore, is essential to evaluate the genetic diversity among the genotypes, looking their SSC and also the SSC variation, related to the position of the cluster, mainly due to the new technologies – tomato hybrids obtained from dwarf lines. In this sense, the objective of the experiment was to evaluate the genetic variability and the influence of the cluster’s position on the SSC, in minitomato genotypes that were obtained from dwarf lines. The experiment were conducted on a greenhouse and set up in a completely randomized design, with subdivided portion of 13 hybrids x 5 cluster’s position and four replications. The SSC of the fruits were evaluated according with their position of the clusters, being the values expressed in 0Brix. The genetic diversity was obtained by multivariate analyzes, using the generalized distance of Mahalanobis, utilizing different grouping methods (UPGMA and Tocher). The hybrids performance for SSC was checked by the Scott-Knott test (p=0.005). The cluster’s position influenced on the SSC of the minitomatoes fruits and the first cluster of all hybrids that were evaluated, presented the highest SSC. Besides that, the highest 0Brix variability among the genotypes occurred when the fruits were harvested on the fifth and first cluster. Most hybrids originated from dwarf lines did not presented a reduce on 0Brix values during the harvests.

Quality of Carrots Grown for Processing as Affected by Nitrogen Fertilization and Harvest Term

2009 ◽  
Vol 70 (1) ◽  
pp. 135-144 ◽  
Author(s):  
Marek Gajewski ◽  
Zenon Węglarz ◽  
Anna Sereda ◽  
Marta Bajer ◽  
Agnieszka Kuczkowska ◽  
...  
Keyword(s):  
Nitrogen Fertilization ◽  
Soluble Solids ◽  
Soluble Solids Content ◽  
Carrot Juice ◽  
Harvest Time ◽  
Experimental Station ◽  
Colour Parameters ◽  
Solids Content ◽  
Nitrates Content

Quality of Carrots Grown for Processing as Affected by Nitrogen Fertilization and Harvest TermIn 2007-2008 the effect of nitrogen fertilization and harvest term on quality of two carrot cultivars was investigated. The field experiment was carried out in Żelazna Experimental Station of Warsaw University of Life Sciences. Karotan F1and Trafford F1cultivars, commonly grown for juice industry, were the objects of the experiment. Carrot seeds were sown at the beginning of May. Nitrogen fertilization was applied in five rates, ranged from 0 to 120 kg·ha-1and in two terms — before sowing and in the middle of growing season. Roots were harvested in three terms: mid-September, mid-October and the first decade of November. After harvest there were determined: nitrates (NO3) content in carrot roots and juice, soluble solids, colour parameters of juice in CIE L*a*b*system. The dose and the term of nitrogen fertilization influenced nitrates content in carrots, and the highest NO3concentration was found in carrots fertilized with 120 kg·ha-1of N before sowing. Karotan showed higher nitrates accumulation than Trafford. The content of nitrates in the roots was markedly higher than in carrot juice. Nitrates content in carrots decreased with delaying of harvest time, in opposite to soluble solids content. Soluble solids content and colour parameters of carrot juice were not affected by nitrogen fertilization, but the lowest L*, a*and b*values were observed at the last term of harvest.

scholarly journals Physico-chemical aspects of grape juices produced in the region of Campanha Gaucha, RS, Brazil (Southern Brazil)

2019 ◽  
Vol 12 ◽  
pp. 01018
Author(s):  
V.B. Costa ◽  
S.B. de Andrade ◽  
P.L.P.K. Lemos ◽  
A. Bender ◽  
C. Goulart ◽  
...  
Keyword(s):  
Grape Juice ◽  
Soluble Solids ◽  
Soluble Solids Content ◽  
Southern Brazil ◽  
Color Intensity ◽  
Volatile Acidity ◽  
Physico Chemical ◽  
Increasing Demand ◽  
Solids Content ◽  
Grape Juices

The Campanha Gaucha region, southern Brazil, has received significant investments in Viticulture during the last decades, especially for the production of quality wines. However, implementing the production of American and hybrid grapes in this region constitutes and opportunity to supply the increasing demand of the grape juice market in Brazil. Juices of two varieties, “Bordô” and “Concord”, from two locations, Dom Pedrito and Santana do Livramento, were analysed in terms of the following physico-chemical aspects: total city, volatile acidity, density, pH, soluble solids content, color intensity, and hue. “Bordô” juices presented higher total acidity and did not differ in relation to location. Higher volatile acidity was found in “Concord” juice from Santana do Livramento. Higher pH was found in the variety “Concord” and in the location Dom Pedrito. For this same location, the “Concord” grape juices showed higher soluble solids values. Color intensity was higher in Santana do Livramento. Color hue was higher in Dom Pedrito. Both variety and location impacted significantly on physico-chemical aspects of grape juices, although all the grapes were produced within the Campanha Gaucha region.

scholarly journals Modelling Soluble Solids Content Accumulation in ‘Braeburn’ Apples

Plants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 302
Author(s):  
Konni Biegert ◽  
Daniel Stöckeler ◽  
Roy J. McCormick ◽  
Peter Braun
Keyword(s):  
Explanatory Power ◽  
Partial Least Square ◽  
Optical Measurements ◽  
Soluble Solids ◽  
Sensor Data ◽  
Soluble Solids Content ◽  
Mixed Effect ◽  
Laboratory Errors ◽  
Solids Content ◽  
Non Destructive

Optical sensor data can be used to determine changes in anthocyanins, chlorophyll and soluble solids content (SSC) in apple production. In this study, visible and near-infrared spectra (729 to 975 nm) were transformed to SSC values by advanced multivariate calibration models i.e., partial least square regression (PLSR) in order to test the substitution of destructive chemical analyses through non-destructive optical measurements. Spectral field scans were carried out from 2016 to 2018 on marked ‘Braeburn’ apples in Southwest Germany. The study combines an in-depth statistical analyses of longitudinal SSC values with horticultural knowledge to set guidelines for further applied use of SSC predictions in the orchard to gain insights into apple carbohydrate physiology. The PLSR models were investigated with respect to sample size, seasonal variation, laboratory errors and the explanatory power of PLSR models when applied to independent samples. As a result of Monte Carlo simulations, PLSR modelled SSC only depended to a minor extent on the absolute number and accuracy of the wet chemistry laboratory calibration measurements. The comparison between non-destructive SSC determinations in the orchard with standard destructive lab testing at harvest on an independent sample showed mean differences of 0.5% SSC over all study years. SSC modelling with longitudinal linear mixed-effect models linked high crop loads to lower SSC values at harvest and higher SSC values for fruit from the top part of a tree.

scholarly journals The Effect of Weed Competition on Apple Fruit Quality

2017 ◽  
Vol 45 (1) ◽  
pp. 120-125 ◽  
Author(s):  
Ersin ATAY ◽  
Seckin GARGIN ◽  
Ahmet ESITKEN ◽  
N. Pinar GUZEL ◽  
A. Nilgun ATAY ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Fruit Weight ◽  
Apple Orchard ◽  
High Density ◽  
Soluble Solids ◽  
Limiting Factor ◽  
Weed Competition ◽  
Soluble Solids Content ◽  
Solids Content ◽  
Potassium Magnesium

Orchard performance is influenced by weed competition. In this study, the effects of weed competition on nutrient contents, chemical and physical fruit quality properties were sought. The study was carried out in a high-density apple orchard (‘Golden Delicious’/M.9) over two consecutive growing seasons. The effect of weed competition was studied at three different levels: weak, moderate and strong. Fruit firmness, soluble solids content, macronutrients (such as nitrogen, potassium and calcium) and potassium+magnesium/calcium ratio in fruit were significantly affected by weed competition. Strong weed competition negatively affected soluble solids content and potassium+magnesium/calcium ratio. In both trial years, soluble solids content was significantly higher in weak weed competition. In the first year of the study, soluble solids content ranged between 13.77±0.06% (strong weed competition) and 15.20±0.10% (weak weed competition). In the following year, soluble solids content values were determined as 13.13±0.23% in strong weed competition and 13.83±0.21% in weak weed competition. Weak weed competition showed superiority for fruit weight and potassium+magnesium/calcium ratio. As a whole, this study indicates that insufficient weed control in tree rows might be a limiting factor for fruit quality in high-density apple orchards.

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