scholarly journals Effect of Fertigation Management and the Composition of Nutrient Solution on the Yield and Quality of High Soluble Solid Content Tomatoes

2008 ◽  
Vol 77 (2) ◽  
pp. 143-149 ◽  
Author(s):  
Shahnaz Sarkar ◽  
Yoshikazu Kiriiwa ◽  
Masanobu Endo ◽  
Tomoya Kobayashi ◽  
Akira Nukaya
2016 ◽  
Vol 11 (3) ◽  
pp. 203 ◽  
Author(s):  
Luigi Morra ◽  
Maurizio Bilotto ◽  
Domenico Cerrato ◽  
Raffaella Coppola ◽  
Vincenzo Leone ◽  
...  

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.


2020 ◽  
Vol 5 (3) ◽  
pp. 247-253
Author(s):  
M.A. Khan ◽  
M.M. Rahman ◽  
R. Sarker ◽  
M.I. Haque ◽  
S.N. Mazumdar

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.


Irriga ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 549-561
Author(s):  
RAFAEL RAMOS MORAIS ◽  
JOÃO PAULO SILVA MACÊDO ◽  
LOURIVAL FERREIRA CAVALCANTE ◽  
JACKSON TEIXEIRA LOBO ◽  
ANTÔNIO GUSTAVO LUNA SOUTO ◽  
...  

ARRANJO ESPACIAL E PODA NA PRODUÇÃO E QUALIDADE QUÍMICA DE MARACUJÁ IRRIGADO COM ÁGUA SALINA     RAFAEL RAMOS MORAIS1; JOÃO PAULO SILVA MACÊDO2; LOURIVAL FERREIRA CAVALCANTE3; JACKSON TEIXEIRA LOBO1; ANTÔNIO GUSTAVO LUNA SOUTO1 E EVANDRO FRANKLIN MESQUITA4   1 Programa de pós-graduação em Agronomia, Departamento de Fitotecnia e Ciências Ambientais do Centro de Ciências Agrárias, Universidade Federal da Paraíba, Rodovia PB 079, SN, Km 12, 58.397-000, Areia, Paraíba, Brasil, [email protected]; [email protected], [email protected]. 2 Empresa Paraibana de Pesquisa, Extensão Rural e Regularização Fundiária, Rodovia BR 230, S/N, Km 13, Morada Nova, 58.108-502, Cabedelo, Paraíba, Brasil, [email protected]. 3 Professor do Departamento de Solos e Engenharia Rural, Universidade Federal da Paraíba, Rodovia PB 079, S/N, Km 12, 58.397-000, Areia, Paraíba, Brasil, [email protected]. 4 Professor do Centro de Ciências Humanas e Agrárias, Universidade Estadual da Paraíba, Sitio Cajueiro, S/N, Zona Rural, 58.884-000, Catolé do Rocha, Paraíba, Brasil, [email protected].     1 RESUMO   Um experimento foi desenvolvido no município de Coronel Ezequiel, Estado do Rio Grande do Norte, Brasil, para avaliar os efeitos da densidade de plantio e poda da haste principal em plantas de maracujazeiro amarelo, acesso Guinezinho, sob irrigação com água salina de 3,4 dS m-1. Os tratamentos, com distância de 2,0 m entre linhas, foram distribuídos em blocos ao acaso, com quatro repetições de 12 plantas por parcela, em esquema fatorial 4 × 2, correspondente as distâncias de 3, 6, 9 e 12 m entre plantas nas linhas com e sem poda da haste principal, ao atingir o sistema de sustentação. Os componentes avaliados foram número de frutos colhidos, produção por planta, produtividade e na polpa dos frutos, os valores de sólidos solúveis, acidez titulável, pH e a relação sólidos solúveis/ acidez titulável. A interação entre os fatores estudados exerceu efeitos significativos no número de frutos colhidos, produção por planta, teor de sólidos solúveis e acidez titulável. A produtividade foi influenciada pelos dois fatores de forma isolada. O pH da polpa respondeu apenas ao espaçamento entre plantas nas linhas e a relação SS/AT não foi influenciada por nenhuma das fontes de variação estudadas. O aumento das distâncias de plantio nas linhas promove ganho de produção por planta, mas reduz a produtividade. Plantas podadas na haste principal apresentam maior produtividade. A irrigação com água de qualidade restritiva à agricultura não inibiu a capacidade produtiva do maracujazeiro amarelo acesso Guinezinho e não prejudicou a qualidade química dos frutos.   Palavras-chave: acesso Guinezinho, densidade de plantio, Passiflora edulis Sims.     MORAIS, R. R.; MACÊDO, J. P. S.; CAVALCANTE, L. F.; LOBO, J. T.; SOUTO, A. G. L.; MESQUITA, E. F. SPATIAL ARRANGEMENT AND PRUNING IN THE PRODUCTION AND CHEMICAL QUALITY OF YELLOW PASSIONFRUIT IRRIGATED WITH SALINE WATER       2 ABSTRACT   An experiment was carried out in  Coronel Ezequiel municipality, Rio Grande do Norte State, Brazil, to evaluate the effects of planting density and pruning of the main stem on yellow passion fruit plants access Guinezinho under irrigation with saline water (3.4 dS m-1). The treatments, with inter-row distance of 2 m, were distributed in randomized blocks, with four replications of 12 plants per plot, in a 4 × 2 factorial scheme, corresponding to intra-row distances of 3, 6, 9 and 12 m for plants with and without pruned main stem, upon reaching the support system. The evaluated components were number of fruit harvested, production per plant, fruit yield and in the fruit pulp, the analyzed components were soluble solid content, titratable acidity, pH and soluble solid content/ titratable acidity ratio. The interaction between the factors studied significantly affected the number of fruit harvested, production per plant, solids content and titratable acidity. The fruit yield was influenced by the two isolated factors, but the pH of the pulp responded only to the intra-row plant spacing, and the solids content/ titratable acidity ratio was not influenced by any of the sources of variation studied. Increasing the distances intra-row raises the production per plant, but reduces fruit yield. Plants pruned on the main stem have higher fruit yield. Irrigation with restrictive water quality to agriculture did not inhibit the productive capacity of yellow passion fruit access Guinezinho and did not impair the chemical quality of the fruits.   Keywords: Guinezinho access, planting density, Passiflora edulis Sims.


Processes ◽  
2020 ◽  
Vol 8 (11) ◽  
pp. 1457
Author(s):  
Leszek Rydzak ◽  
Zbigniew Kobus ◽  
Rafał Nadulski ◽  
Kamil Wilczyński ◽  
Anna Pecyna ◽  
...  

The paper presents the comparison of quality of six different commercial apple juices produced in Poland. The apple juices came from two different Polish companies. From each manufacturer three various juices were selected: two cloudy and clarified one produced as a mixture of different apple varieties. The following properties were evaluated: density, soluble solid content, viscosity, total phenolic contents, phenolic acid, and antiradical activity. The obtained results showed that three from fourth cloudy juices (M1Sz, M1A and M2A) differed from clarified juices. The highest differences were noticed for total phenolic contents, phenolic acids, antiradical activity and viscosity. The values of these properties ranged between 60.72–103.6 mg GAE·100−1 mL−1 for phenolic contents, 78.3–90.9% for antiradical activity and 2.68–5.79 mPa·s for viscosity. The remaining cloudy juice (M2Sz) was more similar to the clarified ones. The strong correlation between total phenolic content and antiradical activity of apple juices was found. The high correlation coefficient obtained between these features indicates that both producers do not apply excessive amounts of vitamin C during the production of cloudy apple juices. There was also a strong interrelation between the density of juice and solid soluble content. However, no correlation was found between the solid soluble content and the viscosity of the tested juices.


2020 ◽  
Vol 1 (1) ◽  
pp. 67-74
Author(s):  
Mădălina Butac ◽  
Mihai Chivu

The aim of this study was to assess the yield and fruits quality of plum produced in ecological system.In 2019-2020 periods the influence of different fertilizers (Biohumus, Macys BC 28 and Cifamin BK) on yield and fruits quality at three plum cultivars (‘Centenar’, ‘Tita’ and ‘Stanley’) was carried out in a demonstrative plot from Research Institute for Fruit Growing Pitești, Romania. Biohumus was applied to the soil in increasing dosesfrom 0.5 l/tree (respectively 415 l/ha), 0.7 l/tree (respectively 585 l/ha) to 0.9 l / tree (respectively 750 l/ha) in two moments: in spring before the start of vegetation and in autumn after the fall of the leaves.Macys BC 28 and Cifamin BK fertilizers were applied foliar in doses of 2 l/ha, respectively 1 l/ha, in two moments: after flowering and in the young fruit phase.As results of the investigations we found that: the highest fruit yield was obtained at ‘Centenar’ (47.36 kg/tree) and ‘Stanley’ (41.00 kg/tree) cultivars in fertilization variant 3 (Biohumus – 0,9 l/tree, soil application + Macys BC 28 – 2 l/ha, foliar application + Cifamin BK – 1 l/ha, foliar application);the best results regarding the fruits weight were also obtained in the 3rd fertilization variant (Biohumus – 0,9 l/tree, soil application + Macys BC 28 – 2 l/ha, foliar application + Cifamin BK – 1 l/ha, foliar application), among the varieties being noted the ‘Tita’cv. with an average fruit weight of 59. 14 g; the fruits soluble solid content was higher in the case of the fertilized variants than in the unfertilized variant and the fruits aciditywas higher in the case of the unfertilized variant than in the fertilized variants.


2016 ◽  
Vol 10 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Gabriela Teodorescu ◽  
Virgil Moise ◽  
Aurelia Corina Cosac

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.


2018 ◽  
Vol 8 (1) ◽  
pp. 1-10
Author(s):  
Mohammad Affan Fajar Falah ◽  
Putri Yuliastuti ◽  
Risma Hanifah ◽  
Pujo Saroyo ◽  
Jumeri Jumeri

 Strawberry (Fragaria sp cv Holibert) is a non-climakteric fruit which have high value with high  consumer demand. Tropical environment conditions can deteriorate and decrease quality of their fruit. Objective of the research were to identify quality characteristics of fresh strawberry that storages in tropical environment with and without temperature controlled.Strawberry fruit were sampled from mountain area in Ketep, Magelang, Central Java. Several quality parameter were measured include physical parameter (fresh weight, weight loss, skin texture and color) and chemical parameter (water content, soluble solid content, vitamin C and titratable acidity). Then, fresh weight of strawberry were  compared with IQS 8026-2014 using control chart. Storage conditions were tropical condition without controlled temperature and controlled temperature at 4 oC and 10 oC. Result shown that chemical parameters of fresh strawberry were optimum at 4 oC storage condition for water content and soluble solid content. Physical parameter of fresh starwberry were better conditions at controlled environment. The standard quality  was confirmed with class 1 for weight averages >15-20 g/fruit for best fruit . Tropical conditions were deteriorate quality and shortage shelf life of the strawberry.


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

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.


2020 ◽  
Vol 11 ◽  
pp. e3254
Author(s):  
Welson Lima Simões ◽  
Maria Aparecida do Carmo Mouco ◽  
Victor Pimenta Martins de Andrade ◽  
Pedro Paulo Bezerra ◽  
Eugenio Ferreira Coelho

Mango production has been having a great economical expression in the Brazilian agriculture. However, the economic crisis and increased competitiveness of the international market required improvements in the crop efficiency for its sustainability. In this context, the objective of this work was to evaluate the effect of different irrigation system on the physiology and fruit yield and quality of Palmer mango trees in the semiarid conditions of the Lower Middle São Francisco Valley, Brazil. The experiment was carried out at the Agranvil Farm, in Petrolina, state of Pernambuco, Brazil, with harvests in July 2013 and October 2014. A randomized block statistical design was used, with four treatments replicated in 5 blocks, during two production cycles. The treatments consisted of four irrigation systems: one micro sprinkler under the plant canopy (MSPC); drip system with two lateral lines per plant row (DSLL); one micro sprinkler between plants (MSBP); and ring-shaped drip system around the plants (RSDS). All treatments provided a flow rate of 56 L h-1 plant-1. The physiological characteristics evaluated were: photosynthesis, stomatal conductance, leaf transpiration, and leaf temperature. Fruit yield, quantity, mean weight, volume, soluble solid content, titratable acidity (TA), density, and pulp firmness were evaluated after the harvest. The evaluated treatments presented significant differences for the physiological variables. The treatment DSLL provided higher number of fruits and fruit yield, and the treatment MSBP provided the lowest results for these variables.


2011 ◽  
Vol 39 (2) ◽  
pp. 209 ◽  
Author(s):  
Tuba DİLMAÇÜNAL ◽  
Mehmet Ali KOYUNCU ◽  
Hakan AKTAŞ ◽  
Derya BAYINDIR

Bunch tomatoes (Lycopersicon lycopersicum L.) ‘Bandita’ cv. were hand-harvested at red ripe stage. The plants were grown on hanging carrying system with high wire support training in coco peat media in a plastic greenhouse located in Antalya (Turkey). Harvested fruits were divided to four groups for these treatments: (1) control-not treated; (2) tomato wax (Tomato wax is a wax formulated from 99% food grade mineral oil and 1% water); (3)Nutrient solution (1% potassium nitrate + 0.5% zinc sulfate + 1% calcium chloride + 0.1% boron + 0.2% copper sulfate + 0.5% ascorbic acid + 0.1% salicylic acid) and (4) Herbal oil (Herbal oil is a natural product obtained from hazelnut fruit membrane contains a high level of antioxidant). Bunches, placed in carton boxes, stored at 20°C temperature and 90±5% relative humidity for 16 days. Weight loss of bunches, firmness, respiration rate, ethylene production, colour, soluble solid content, pH, titratable acidity and sensory attributes (external appearance and taste-aroma of fruits and wilting and drying of calyxes) of tomatoes were evaluated during storage. Tomato wax treatment was limited the weight loss and preserved firmness better than the others. Tomato wax, nutrient solution and herbal oil treatments were limited the respiration rate. Ethylene production of nutrient solution treated fruits showed the highest value followed by herbal oil, tomato wax and control group. The highest colour change was found in control group. The lowest soluble solid content and the highest level of acidity were found in fruits treated with tomato wax. Control , herbal oil and nutrient solution treatments were lost marketable quality after 8 days of storage. TW treatment gave the best result and provided to store bunch tomatoes at good quality for 12 days.


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