Spatial Variation in Blooming and Yield in an Apple Orchard, in Romania

2016 ◽  
Vol 10 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Gabriela Teodorescu ◽  
Virgil Moise ◽  
Aurelia Corina Cosac
Keyword(s):  
Spatial Variation ◽  
Precision Agriculture ◽  
Quality Parameters ◽  
Apple Orchard ◽  
Solid Content ◽  
Soluble Solid Content ◽  
Management Zones ◽  
Yield And Quality ◽  
Soluble Solid ◽  
Apple Quality

Abstract The aim of this study was to analyse the spatial variation of blooming, yield and quality parameters, in an apple orchard, by using precision agriculture tools. This study is a preliminary step in order to create management zones, to take the management decisions and made the evaluation of the applied practices. The study was conducted in the Research and Development Station for Pomology Voinesti, Dambovita, on the 0.9 ha orchard. The orchard consists in Florina apple trees and Generos pollinator. The surface was mapped with GPS and the yield of each tree was manually harvested and weighed. Apple quality was evaluated in terms of: firmness, soluble solid content, juice pH. Also, in spring was determined the number of flowers/tree and the exact period of flowering. The interpolated maps were created using Surfer 8 software and the correlations between yield and quality have been established; some quality characteristics are negatively correlated with yield, like firmness.

scholarly journals Effect of Cross-Linked Alginate/Oil Nanoemulsion Coating on Cracking and Quality Parameters of Sweet Cherries

Foods ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 449
Author(s):  
Camilo Gutiérrez-Jara ◽  
Cristina Bilbao-Sainz ◽  
Tara McHugh ◽  
Bor-Sen Chiou ◽  
Tina Williams ◽  
...  
Keyword(s):  
Titratable Acidity ◽  
Quality Parameters ◽  
Solid Content ◽  
Postharvest Quality ◽  
Soluble Solid Content ◽  
Nutritional Values ◽  
Quality Properties ◽  
Vapor Transfer ◽  
Sweet Cherries ◽  
Soluble Solid

The cracking of sweet cherries causes significant crop losses. Sweet cherries (cv. Bing) were coated by electro-spraying with an edible nanoemulsion (NE) of alginate and soybean oil with or without a CaCl2 cross-linker to reduce cracking. Coated sweet cherries were stored at 4 °C for 28 d. The barrier and fruit quality properties and nutritional values of the coated cherries were evaluated and compared with those of uncoated sweet cherries. Sweet cherries coated with NE + CaCl2 increased cracking tolerance by 53% and increased firmness. However, coated sweet cherries exhibited a 10% increase in water loss after 28 d due to decreased resistance to water vapor transfer. Coated sweet cherries showed a higher soluble solid content, titratable acidity, antioxidant capacity, and total soluble phenolic content compared with uncoated sweet cherries. Therefore, the use of the NE + CaCl2 coating on sweet cherries can help reduce cracking and maintain their postharvest quality.

scholarly journals The Mater-Bi® biodegradable film for strawberry (Fragaria x ananassa Duch.) mulching: effects on fruit yield and quality

2016 ◽  
Vol 11 (3) ◽  
pp. 203 ◽  
Author(s):  
Luigi Morra ◽  
Maurizio Bilotto ◽  
Domenico Cerrato ◽  
Raffaella Coppola ◽  
Vincenzo Leone ◽  
...  
Keyword(s):  
Bioactive Compounds ◽  
Titratable Acidity ◽  
Solid Content ◽  
Soluble Solid Content ◽  
Chemical Parameters ◽  
Biodegradable Film ◽  
Yield And Quality ◽  
Physical Chemical ◽  
Soluble Solid

Two trials in different agricultural farms were carried out from October 2014 to June 2015 with the aim to assess the advantages linked to the substitution of the low density polyethylene (LDPE) films for soil mulching with the Mater-Bi<sup>®</sup> biodegradable films in the strawberry cultivation under tunnel in Campania. Lifetime of biodegradable mulch and influence of type of mulch on the yield and the quality of cvs Sabrina and Fortuna were evaluated. Plants were cultivated on mulched, raised beds, high 40 cm from bottom soil. Mater-Bi<sup>®</sup> film was 20 <span>µ</span>m thick while LDPE film was 50 mm thick. The physical-chemical parameters (firmness, pH, total soluble solid content, titratable acidity and skin colour) and some bioactive compounds (total polyphenols, flavonoids, anthocyanins, antioxidant activity) of fruits were determined by three samplings effected in consecutive months (from March to May 2015) of the harvest cycle. Biodegradable film guaranteed an effective mulch along the whole strawberry cycle (9-10 months including the time of drawing up of film). Yields of cv Sabrina on LDPE was 18% higher than those on Mater-Bi<sup>®</sup> while the opposite was detected in cv Fortuna (+10%). The physical-chemical parameters of fruits were not modified by the mulches. The content of the bioactive compounds, instead, resulted, in each time of sampling, significantly higher in fruits picked on Mater-Bi<sup>®</sup> based film.

scholarly journals CAUSAS DA VARIAÇÃO EM PRODUTIVIDADE E QUALIDADE DO MELÃO EM ARGISSOLO VERMELHO-AMARELO

Irriga ◽  
2018 ◽  
Vol 11 (4) ◽  
pp. 507-517
Author(s):  
Neyton De Oliveira Miranda ◽  
Teógenes Senna de Oliveira ◽  
Sérgio Luiz Aguilar Levien ◽  
José De Arimatéa de Matos
Keyword(s):  
Cucumis Melo ◽  
Discharge Rate ◽  
Negative Influence ◽  
Solid Content ◽  
Total Soluble Solid ◽  
Production Cycle ◽  
Soluble Solid Content ◽  
Yield And Quality ◽  
Soluble Solid ◽  
Cucumis Melo L

Causas da variação em produtividade e qualidade do melão em ARGISSOLO Vermelho-Amarelo  Neyton de Oliveira Miranda1; Teógenes Senna de Oliveira2; Sérgio Luiz Aguilar Levien1; José de Arimatéa de Matos11Departamento de Ciências Ambientais, Universidade Federal Rural do Semi-Árido, Mossoró, RN, [email protected] de Ciências do Solo, Universidade Federal do Ceará, Fortaleza, CE  1 RESUMO             O trabalho foi realizado em área de produção comercial de melão, em Mossoró, RN, para identificar variáveis da fertirrigação e atributos físicos e químicos do solo influenciando a produtividade e qualidade de frutos. Foram realizadas determinações de: produtividade (frutos tipo exportação e comerciáveis); qualidade de frutos (conteúdo de sólidos solúveis totais e firmeza de polpa); da fertirrigação (vazão, elevação, distância desde a entrada de água e quantidade de adubo aplicada); de características químicas do solo (pH, matéria orgânica, Ca2+, Mg 2+, K+e Na+, acidez potencial, P disponível, Cu, Zn, Fe e Mn) e físicas (teores de argila, areia e silte, densidade do solo e umidade nas tensões de 5 e 10 kPa). Para a análise dos dados utilizou-se a estatística descritiva, a correlação de Spearman e regressão múltipla. A produtividade do melão foi prejudicada pelo excesso de água e adubo, enquanto teores de areia, ligados a menor umidade no solo, favoreceram a qualidade de frutos. O pH do solo influenciou positivamente a produtividade tipo exportação e sólidos solúveis totais. Os maiores teores de Mg favoreceram a cultura, corrigindo o desequilíbrio na relação K:Ca:Mg. Os altos teores de micronutrientes no solo foram prejudiciais à cultura, com exceção do Zn. unitermos: Cucumis melo L., propriedades do solo, fertirrigação  MIRANDA, N. de O.; OLIVEIRA, T. S. de; LEVIEN, S. L. A.; MATOS, J. de A. de.CAUSES OF VARIATION ON MELON YIELD AND QUALITY IN AN ULTISOL  2 abstract One drip fertirrigated melon production cycle was monitored in an ultisol inMossoro, RN,Brazil, to identify soil and fertirrigation variables influencing yield and quality. The following variables were measured: yield (export type and marketable fruits); quality (total soluble solid contents and fruit pulp firmness); fertirrigation (emitter discharge rate, elevation, distance to water inlet and applied fertilizer amount); soil chemical properties (pH, organic matter, Ca, Mg, K, Na, potential acidity, available P, Cu, Zn, Fe and Mn) and physical properties (contents of clay, sand and silt, soil density and soil moisture at 5 and 10 kPa). Data analysis was carried out through descriptive statistics, Spearman’s correlation and multiple regressions. Applied water and nutrient excess had negative influence on melon yield, whereas soil sand content favored fruit quality. Soil pH had a positive influence on export type yield and total soluble solid content. Melon yield and quality were improved by high Mg contents, which corrected an unbalanced soil K:Ca:Mg ratio. High soil micronutrient contents were harmful to the crop, except for Zn. KEYWORDS: Cucumis melo L., soil properties, fertirrigation.

scholarly journals Prediksi Indeks Panen Jambu “Kristal” secara Non Destruktif Menggunakan Portable Near Infrared Spectrometer

2021 ◽  
Vol 9 (3) ◽  
pp. 103-110
Author(s):  
Ayu Putri Ana ◽  
Y. Aris Purwanto ◽  
Slamet Widodo
Keyword(s):  
Standard Error ◽  
Near Infrared ◽  
Quality Parameters ◽  
Solid Content ◽  
Partial Least Square ◽  
Least Square ◽  
Soluble Solid Content ◽  
Soluble Solid ◽  
Infrared Spectrometer ◽  
Near Infrared Spectrometer

“Crystal” guava (Psidium guajava L.) is a climacteric fruit that is generally harvested by farmers based on cultivation experience. In this study, portable 740-1070 nm of near-infrared spectrometer was employed to rapidly predict harvest indices of “crystal” guava, by means of non-contact and non-destructive approach. Samples of guava fruit were collected at days after anthesis (DAS) of 91, 94, 97, and 100. The total number of each sample were 30 fruits. The firmness, soluble solid content, acidity and sugar acid ration were evaluated as quality parameters. Partial least square (PLS) method was utilized for data processing. It was found that Standard Normal Variate (SNV) resulted the best pre-processing for all quality parameters. Performances of best models were demonstrated by coefficient of corraltion (R), standard error of calibration (SEC) and standard error of prediction (SEP), which were respectively 0.88, 6.21, 5.92 for firmness prediction, 0.74, 0.84, 0.79 for soluble solid content prediction, 0.59, 0.19, 0.26 for acidity prediction, and 0.71, 1.21, 1.58 for sugar acid ratio prediction model.

scholarly journals Vertical Distribution of Crop Load and Fruit Quality within Vase- and Y-shaped Canopies of `Elegant Lady' Peach

HortScience ◽  
2005 ◽  
Vol 40 (3) ◽  
pp. 587-591 ◽  
Author(s):  
Vittorio Farina ◽  
Riccardo Lo Bianco ◽  
Paolo Inglese
Keyword(s):  
Fruit Quality ◽  
Quality Parameters ◽  
Fruit Weight ◽  
Solid Content ◽  
Soluble Solid Content ◽  
Fruit Peel ◽  
Crop Load ◽  
Soluble Solid ◽  
Deep Layers ◽  
Peach Trees

Canopy shape and depth may influence crop uniformity of peach trees at harvest. To test this hypothesis we examined yield distribution and fruit quality changes at different canopy levels of peach trees trained to delayed vase (DV) and perpendicular Y (Y). Trees of both training forms were divided vertically into six or seven 50-cm-deep layers and fruit was harvested at commercial ripening from each layer separately. Regardless of training form, number of fruit and yield per layer were highest in the central part of the canopy, but more evenly distributed among canopy layers in Y trees. In DV trees, fruit weight decreased linearly from top to bottom, whereas it remained constant along the top and middle portion of Y canopies to decrease rapidly at the bottom. In DV trees, 83% of the fruit fell into AAA, AA and A size categories, whereas fruit of Y trees was more evenly distributed among all size categories. Hue of fruit peel color increased linearly with distance from canopy top in both training forms, but more sharply in DV trees. Fruit soluble solid content decreased linearly from canopy top to bottom, regardless of training form. A more uniform crop load distribution within the canopy in combination with a light penetration gradient resulted in greater variability of quality parameters for Y than DV trees.

scholarly journals Effects of transplanting time on the yield and quality of onion (Allium cepa L.)

2020 ◽  
Vol 5 (3) ◽  
pp. 247-253
Author(s):  
M.A. Khan ◽  
M.M. Rahman ◽  
R. Sarker ◽  
M.I. Haque ◽  
S.N. Mazumdar
Keyword(s):  
Dry Matter ◽  
Matter Content ◽  
Solid Content ◽  
Total Soluble Solid ◽  
Soluble Solid Content ◽  
Dry Matter Content ◽  
Yield Attributes ◽  
Yield And Quality ◽  
Soluble Solid

A field experiment was conducted at Spices Research Sub-Centre (SRSC), Bangladesh Agricultural Research Institute (BARI), Faridpur, Bangladesh during the winter season of 2018-2019 to investigate the influences of transplanting times of seedlings and the varieties on the yield and quality of onion bulbs. There were six levels of transplanting time such as T1: November 15, T2: November 30, T3: December 15, T4: December 30, T5: January 14 and T6: January 29 under the trial. The varieties used in the study were: BARI Onion-1 and BARI Onion-4. The experiment was laid out in a randomized complete block design (RCBD) of factorial concept with three replications. The results revealed that dates of transplanting, varieties and their combined effects had significant effect on the parameters studied with minor exception. The plant height, number of leaves/plant and incidence of bolting were decreased with the passage of transplanting time. The maximum values (54.51 cm, 8.53 and 71.28%) of the aforementioned traits were recorded at early transplanting on November 15, respectively. The reduced percent of bolting (2.22%) was observed at December 30. While no incidence of bolting was found under transplanting on 14-29 January. Bulb diameter, individual bulb weight, yield, total soluble solid content and dry matter content of bulb were increased up to transplanting on December 15. Afterwards the values of aforesaid parameters were gradually decreased. The highest yield (17.65 t/ha), total soluble solid content (17.02 0brix) and dry matter content of bulb (15.95%) were obtained from December 15 insignificantly followed by December 30 (16.30 t/ha). The delayed transplanting on 29 January markedly reduced the yield (6.72 t/ha), total soluble solid content (12.58 0brix) and dry matter content of bulb (11.61%) as well. The variety BARI Onion-4 performed better in respect of yield and yield attributes but it showed inferior quality. The combined effect of December 15 x BARI Onion-4 gave the highest yield attributes and yield of onion followed by the combination of November 30 x BARI Onion-4 and December 30 x BARI Onion-4 while the values among the three treatments were statistically similar.

scholarly journals Changes of Physically-Chemical Parameters of 'Nante' Carrot Hybrids During Storage in Traditional Conditions

2013 ◽  
Vol 67 (4-5) ◽  
pp. 416-421
Author(s):  
Ingrīda Augšpole ◽  
Tatjana Rakčejeva ◽  
Ilze Grāmatiņa
Keyword(s):  
Ascorbic Acid ◽  
Acid Content ◽  
Dietary Fibre ◽  
Ascorbic Acid Content ◽  
Quality Parameters ◽  
Solid Content ◽  
Soluble Solids ◽  
Soluble Solid Content ◽  
Chemical Parameters ◽  
Soluble Solid

Abstract The current research focuses on changes of physically-chemical parameters of 'Nante' carrot hybrids during storage in traditional conditions. Quality parameters during carrot storage for six months at temperature 8 ± 2 oC and relative air humidity 85 ± 1 % were evaluated using standard methods: soluble solids (digital refractometer), dietary fibre (AOAC 985.29), ascorbic acid (iodometric) and firmness (TA.XT.plus Texture Analyser). Before storage, hybrids 'Nante/Berlikum', 'Nante/Maestro' and 'Nante/Bolero' had higher soluble solid content: 1.6 times higher comparing with hybrid 'Nante/Forto' and 1.2 times higher compared with hybrid 'Nante/Champion'. These hybrids also had higher ascorbic acid content: 2.0 times higher than in 'Nante/Forto' and 'Nante/Champion'. Significant differences were not found in dietary fibre content and firmness of non-stored carrots. Substantial differences were observed in soluble solid content in the hybrid 'Nante/Berlikum' during six-month storage - the content decreased 2.0 times. However, nonsignificant decrease of soluble solids content decreases was found for the hybrid 'Nante/Forto'. Changes in hybrid firmness and dietary fibre amount were not significant during storage for four months. Ascorbic acid content of the carrot hybrids during storage decreased by 3.4 times.

scholarly journals Quantitative Evaluation of Color, Firmness, and Soluble Solid Content of Korla Fragrant Pears via IRIV and LS-SVM

Agriculture ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 731
Author(s):  
Yuanyuan Liu ◽  
Tongzhao Wang ◽  
Rong Su ◽  
Can Hu ◽  
Fei Chen ◽  
...  
Keyword(s):  
Quality Parameters ◽  
Solid Content ◽  
Partial Least Square ◽  
Least Square ◽  
Function Parameter ◽  
Support Vector ◽  
Soluble Solid Content ◽  
A Value ◽  
Soluble Solid ◽  
Error Weight

Customers pay significant attention to the organoleptic and physicochemical attributes of their food with the improvement of their living standards. In this work, near infrared hyperspectral technology was used to evaluate the one-color parameter, a*, firmness, and soluble solid content (SSC) of Korla fragrant pears. Moreover, iteratively retaining informative variables (IRIV) and least square support vector machine (LS-SVM) were applied together to construct evaluating models for their quality parameters. A set of 200 samples was chosen and its hyperspectral data were acquired by using a hyperspectral imaging system. Optimal spectral preprocessing methods were selected to obtain out partial least square regression models (PLSRs). The results show that the combination of multiplicative scatter correction (MSC) and Savitsky-Golay (S-G) is the most effective spectral preprocessing method to evaluate the quality parameters of the fruit. Different characteristic wavelengths were selected to evaluate the a* value, the firmness, and the SSC of the Korla fragrant pears, respectively, after the 6 iterations. These values were obtained via IRIV and the reverse elimination method. The correlation coefficients of the validation set of the a* value, the firmness, and the SSC measure 0.927, 0.948, and 0.953, respectively. Furthermore, the values of the regression error weight, γ, and the kernel function parameter, σ2, for the same parameters measure (8.67 × 104, 1.21 × 103), (1.45 × 104, 2.93 × 104), and (2.37 × 105, 3.80 × 103), respectively. This study demonstrates that the combination of LS-SVM and IRIV can be used to evaluate the a* value, the firmness, and the SSC of Korla fragrant pears to define their grade.

Role of Phospholipase D Inhibitor in Regulating Expression of Senescencerelated Phospholipase D gene in Postharvest Longan Fruit

2019 ◽  
Vol 14 (7) ◽  
pp. 649-657 ◽  
Author(s):  
Li Li ◽  
Jiemin Li ◽  
Jian Sun ◽  
Ping Yi ◽  
Changbao Li ◽  
...  
Keyword(s):  
Phospholipase D ◽  
Ascorbic Acid Content ◽  
Titratable Acidity ◽  
Significant Inhibition ◽  
Solid Content ◽  
Total Soluble Solid ◽  
Total Phenolic ◽  
Soluble Solid Content ◽  
Soluble Solid ◽  
Pericarp Browning

Background: Phospholipase D (PLD)is closely related to browning and senescence of postharvest longan fruit. Objective: This study investigated the effects of 2-butanol (a PLD inhibitor) on the expression and regulation of PLD during storage of longan fruit at a low temperature. Methods: Senescence-related quality indices showed that the 2-butanol-treated fruit presented lower pericarp browning index, pulp breakdown index and total soluble solid value than the untreated fruit. Results: The fruit treated by 60 µL/L 2-butanol exhibited the strongest inhibition on senescence, which significantly delayed changes in weight, titratable acidity content, total soluble solid content and ascorbic acid content. This treatment maintained a high level of total phenolic content and caused significant inhibition on pericarp browning and pulp breakdown. Through ELISA method, 60 µL/L 2-butanol treatment also reduced PLD activity. Real-time RT-PCR (RT-qPCR) results showed that PLD mRNA expression level was inhibited by 60 µL/L 2-butanol within 15 days. Western-blotting results further confirmed the differential expression of PLD during storage, and a relatively higher expression for PLD protein was found in control compared to the 2-butanoltreated fruit during 15-d storage. Conclusion: These results provided a scientific basis and reference to further investigating postharvest longan quality maintenance by regulating the PLD gene expression.

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