Cultivation Methods for Tomato (Lycopersicon esculentum Mill.) with High Soluble Solids Content Using the Vertically Split Root System

Tomato (Lycopersicon esculentum Mill.) plants were grown in either a glasshouse (GH) or a controlled environment cabinet (CEC) to assess the effects of partial rootzone drying (PRD) on biomass allocation. Control and PRD plants received the same amounts of water. In control plants, water was equally distributed between two compartments of a split-root system. In PRD plants, only one compartment was watered while the other was allowed to dry. At the end of each drying cycle, wet and dry compartments were alternated. In the GH, total biomass did not differ between PRD and control plants after four cycles of PRD, but PRD increased root biomass by 55% as resources were partitioned away from shoot organs. In the CEC, leaf water potential did not differ between treatments at the end of either of two cycles of PRD, but stomatal conductance of PRD plants was 20% less at the end of the first cycle than at the beginning. After two cycles of PRD in the CEC, biomass did not differ between PRD and control plants, but PRD increased root biomass by 19% over the control plants. The promotion of root biomass in PRD plants was associated with the alternation of wet and dry compartments, with increased root biomass occurring in the re-watered compartment after previous exposure to soil drying. Promotion of root biomass in field-grown PRD plants may allow the root system to access resources (water and nutrients) that would otherwise be unavailable to control plants. This may contribute to the ability of PRD plants to maintain similar leaf water potentials to conventionally irrigated plants, even when smaller irrigation volumes are supplied.

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TOMATO FRUIT PROPERTIES AFFECTING CONSISTENCY OF CONCENTRATED PRODUCT

Canadian Journal of Plant Science ◽

10.4141/cjps87-125 ◽

1987 ◽

Vol 67 (3) ◽

pp. 881-890 ◽

Cited By ~ 7

Author(s):

WILLARD P. MOHR

Keyword(s):

Lycopersicon Esculentum ◽

Tomato Fruit ◽

Flow Characteristics ◽

Climatic Conditions ◽

Soluble Solids ◽

Total Solids ◽

Lycopersicon Esculentum Mill ◽

Apparent Loss ◽

Tomato Product ◽

Solids Content

Fruit properties of tomato (Lycopersicon esculentum Mill.) that determine the flow characteristics of the concentrated product were associated mainly with water-insoluble solids content and serum viscosity. Levels of total (mostly soluble) solids had much less effect on product flowability. Soluble and total solids levels fluctuated widely between and within seasons, increasing during periods of low rainfall and vice versa. Water-insoluble solids content appeared to be mainly cultivar-dependent, and only minimally influenced by moisture and other climatic conditions. Levels of all three solids fractions and serum viscosity differed characteristically from one cultivar to another. Cultivars also differed with respect to apparent loss of water-insoluble solids and serum viscosity during the concentration process.Key words: Tomato, product, consistency, viscosity, solids, serum

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

Vegetable Crops Research Bulletin ◽

10.2478/v10032-009-0013-z ◽

2009 ◽

Vol 70 (1) ◽

pp. 135-144 ◽

Cited By ~ 3

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.

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

HortScience ◽

10.21273/hortsci.33.3.520e ◽

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.

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

BIO Web of Conferences ◽

10.1051/bioconf/20191201018 ◽

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.

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Modelling Soluble Solids Content Accumulation in ‘Braeburn’ Apples

Plants ◽

10.3390/plants10020302 ◽

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.

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The Effect of Weed Competition on Apple Fruit Quality

Notulae Botanicae Horti Agrobotanici Cluj-Napoca ◽

10.15835/nbha45110556 ◽

2017 ◽

Vol 45 (1) ◽

pp. 120-125 ◽

Cited By ~ 1

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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