Effect of compound and single-based fertilizerson shelf life of exotic/minor vegetable crops cultivated for the fresh market

Increased vegetable production for the fresh market often has been suggested as an agricultural alternative that will improve the income situation of small-scale farmers. Because vegetable production is an intensive activity and high incomes per acre are possible, it has political appeal as a quick solution to the low income levels generally associated with small farm operations. This study was developed from the small farm program of the University of Florida, which has concentrated on the northern and panhandle areas of Florida. Trials conducted by the Vegetable Crops Department of the University of Florida in 1974 and 1975 indicate that by variation of the planting season and control of insects and diseases, vegetables can be produced during periods of the year when the north Florida area has not historically competed in the fresh vegetable market.

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Measuring Blackberry Firmness Rapidly: A Comparison of Subjective Ratings and Instrumented Compression Measurements

HortScience ◽

10.21273/hortsci.35.4.568a ◽

2000 ◽

Vol 35 (4) ◽

pp. 568A-568 ◽

Cited By ~ 2

Author(s):

P. Perkins-Veazie ◽

P. Armstrong ◽

J.R Clark

Keyword(s):

Shelf Life ◽

Sample Size ◽

Storage Temperature ◽

Subjective Rating ◽

Rapid Evaluation ◽

Large Sample Size ◽

Subjective Ratings ◽

Fresh Market ◽

Breeding Lines ◽

Harvest Dates

Firmness of blackberries greatly determines shelf life for fresh market. Firmness in blackberries appears to be due to a combination of skin toughness and internal receptacle to permit large sample size measurements. Subjective rating of fruit require consistent evaluation by raters over harvest dates and years, and is subject to fatigue error. The FirmTech2 firmness tester was developed to provide rapid compression measurements and has been successfully used in determining the firmness of cherries and blueberries. Blackberries from a large number of clones ranging in firmness from rock-hard to squishy were measured with the FirmTech2 using a deformation range of 25 to 100 g. Additionally, blackberries were placed in storage at 2, 5, and 2/20 °C to monitor effects of storage temperature on blackberry firmness. Berries were subjectively rated and then placed on the Firmtech for measurements. A comparison of firmness readings for fruit only in the “1” (firm) category was made. Differences found among fruit readings agreed with observed differences in field subjective ratings. Stored fruit that had become soft and mushy could not be statistically differentiated from firmer fruit in quantitative readings. In conclusion, the Firmtech2 allowed rapid evaluation of breeding lines before storage.

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(154) Investigating Consumer Demand for Fresh Market Edamame in Metro-Philadelphia Supermarkets

HortScience ◽

10.21273/hortsci.40.4.1064a ◽

2005 ◽

Vol 40 (4) ◽

pp. 1064A-1064

Author(s):

Dru N. Montri ◽

Kathleen M. Kelley ◽

Elsa S. Sánchez

Keyword(s):

Consumer Demand ◽

Consumer Perceptions ◽

Vegetable Crops ◽

Fresh Market ◽

Consumer Interests ◽

Promotional Materials ◽

Potential Demand

An in-store marketing study was conducted in Fall 2004 to determine consumer demand for fresh, inshell edamame [Glycinemax (L.) Merrill]. Each Wednesday from 1 Sept. to 6 Oct. 2004, thirty 12-ounce plastic clamshells were placed in the produce department of four supermarkets in metro-Philadelphia, Pa. Packaged edamame remained in the supermarkets for 1 week and was replaced with fresh product when the next weekly delivery was made. A sample recipe, a follow-up survey and an addressed, postage-paid reply envelope were attached to the bottom of each clamshell. The survey was used to determine consumer perceptions, interest in Pennsylvania-grown edamame and the criteria they consider when choosing new produce items sold at supermarkets for themselves and their families. Of the 480 clamshells that were delivered, 312 were purchased. The total number of clamshells purchased weekly ranged from 64 to 87, while the number of clamshells purchased weekly at individual stores ranged from 6 to 30. Thirty-three surveys were returned with all participants responding that they had heard of or were familiar with edamame prior to purchasing the container. Of those who responded, 78.8% had purchased edamame before. Based on the total number of packages sold, a potential demand for fresh, inshell edamame exists among consumers in metro-Philadelphia. Results from this study will be used to assist small-acreage growers interested in marketing specialty vegetable crops, such as edamame, to chain supermarkets. By understanding consumer interests, we are able to more effectively determine which type of packaging and promotional materials best attract the attention of potential buyers.

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Comparing the Efficacy of Postharvest Cooling Methods to Enhance Fruit Quality and Reduce Salmonella in Artificially Inoculated Southern Highbush Blueberry

HortTechnology ◽

10.21273/horttech04238-19 ◽

2019 ◽

Vol 29 (3) ◽

pp. 314-319 ◽

Cited By ~ 1

Author(s):

Jaysankar De ◽

Aswathy Sreedharan ◽

You Li ◽

Alan Gutierrez ◽

Jeffrey K. Brecht ◽

...

Keyword(s):

Shelf Life ◽

Fruit Quality ◽

Microbiological Quality ◽

Vaccinium Corymbosum ◽

Temperature Management ◽

Air Cooling ◽

Highbush Blueberry ◽

Fresh Market ◽

Southern Highbush

Cooling procedures used by blueberry (Vaccinium sp.) growers often may include delays up to 24 hours that can damage the fruit through rough handling and adverse temperatures, thereby potentially compromising quality and, subsequently, safety. The objectives of this experiment were to compare forced-air cooling (FAC) compared to hydrocooling without sanitizer (HW) and hydrocooling with sanitizer (HS) regarding the quality and shelf life of southern highbush blueberry [SHB (Vaccinium corymbosum)] and to determine the efficacy of these treatments for reducing Salmonella in SHB. Freshly harvested SHB that were inoculated with a five-serovar cocktail of rifampin-resistant Salmonella were rapidly chilled by FAC or hydrocooling (HW and HS) using a laboratory model system. FAC did not show any significant reduction (P > 0.05) in Salmonella or in the effects on the microbiological quality of blueberries. HW and HS reduced Salmonella by ≈2 and >4 log cfu/g SHB, respectively, on day 0. These postharvest treatments were also evaluated for their ability to help maintain fruit quality throughout a storage period of 21 days at 1 °C. Hydrocooling (both HS and HW) provided more rapid cooling than FAC. Hydrocooled blueberries showed significant weight gain (P < 0.05), whereas FAC resulted in a slight, but insignificant (P > 0.05), reduction in final weight. The results of hydrocooling, both HS and HW, shown in this study could help to extend the shelf life while maintaining or increasing the microbiological quality of fresh market blueberries. Information obtained by this study can be used for developing the best temperature management practices to maintain the postharvest safety and quality of blueberries.

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Evaluation of fresh market tomatoes of the determinate type irrigated by trickle and grown on raised beds covered with polyethylene mulch

Australian Journal of Experimental Agriculture ◽

10.1071/ea9830325 ◽

1983 ◽

Vol 23 (122) ◽

pp. 325 ◽

Cited By ~ 1

Author(s):

JB Sumeghy ◽

DO Huett ◽

WB McGlasson ◽

EE Kavanagh ◽

VQ Nguyen

Keyword(s):

Chemical Composition ◽

Quality Assessment ◽

Shelf Life ◽

New South ◽

Fresh Market ◽

Yield And Quality ◽

South Wales ◽

Polyethylene Mulch ◽

Sensory Tests

Experiments were conducted in November and December, 1981, at three commercial growing sites in New South Wales (Duranbah, Medowie and Richmond) to evaluate the yield and quality of eight determinate cultivars of fresh market tomatoes. Flora-Dade, which is the most widely grown commercial cultivar in Australia, was included as a control. Over all sites, Sunny, Duke and Royal Flush were the highest yielding cultivars, with increases of 25, 22 and 20% respectively, over Flora-Dade. Sunny was the highest yielding cultivar at Medowie and Richmond. Fruit for quality assessment was harvested at an early colour stage and ripened at 20�C. Fruit of Flora-Dade was firmer than all other cultivars. Sunny and GS393 had similar shelf life to Flora- Dade. Chemical composition and sensory tests showed little differences between cultivars.

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Foliar Calcium Applications Do Not Improve Quality or Shelf Life of Strawberry, Raspberry, Blackberry, or Blueberry Fruit

HortScience ◽

10.21273/hortsci11612-16 ◽

2017 ◽

Vol 52 (3) ◽

pp. 382-387 ◽

Cited By ~ 9

Author(s):

Amanda J. Vance ◽

Patrick Jones ◽

Bernadine C. Strik

Keyword(s):

Shelf Life ◽

Fruit Quality ◽

Vaccinium Corymbosum ◽

Rubus Idaeus ◽

Soluble Solids ◽

Fresh Market ◽

Off Flavors ◽

Good Coverage ◽

Early Harvest

Foliar calcium (Ca) products are applied by many berry growers to enhance fruit quality and shelf life without evidence that these applications increase fruit Ca or impact fruit characteristics when applied at rates recommended on the product label. The objectives of this study were to determine if fruit or leaf Ca increases when several formulations of liquid Ca products are applied to developing fruit, and to assess any resulting changes in fresh market quality of berries. Products were applied in strawberry (Fragaria ×ananassa L., ‘Hood’ and ‘Albion’), raspberry (Rubus idaeus L., ‘Tulameen’ and ‘Vintage’), blackberry (Rubus L. subgenus Rubus, Watson, ‘Obsidian’ and ‘Triple Crown’), and blueberry (Vaccinium corymbosum L., ‘Spartan’, ‘Liberty’, ‘Draper’, and ‘Legacy’). Calcium formulations tested were Ca chloride (CaCl2), CaCl2 + boron, Ca silicate, Ca chelate, and Ca acetate, which were compared with a water-only control. The rates used for each product were within ranges specified on the label and supplied equal amounts of Ca per ha for each treatment; the Ca concentration varied from 0.05% to 0.3% depending on the cultivar and the volume of water required for good coverage. All products were applied with a backpack sprayer, except in a separate trial where a backpack and electrostatic sprayer were compared in ‘Draper’ and ‘Legacy’. Treatment applications were started at the early green fruit stage and were repeated three or four times, depending on duration of berry development and cultivar. Fruit were harvested into commercial clamshells 4 days to ≈4 weeks after the final application of Ca from an early harvest at commercial ripeness. Data collected included berry weight, rating of fruit appearance and flavor, firmness, skin toughness, total soluble solids (TSS), and weight loss and nesting (collapse of fruit) during storage (evaluated at ≈5-, 10-, 15-, and 20-days postharvest). Fruit and leaves were sampled at harvest to determine Ca concentration. There was no evidence of spotting or off-flavors due to Ca applications. Compared with the control, none of the Ca treatments or method of application changed leaf or fruit Ca concentration, fruit quality, firmness, or shelf life in any crop or cultivar tested.

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Breeding for Improving Nutritional Qualities and Shelf Life in Vegetable Crops

Advances in Postharvest Technologies of Vegetable Crops ◽

10.1201/9781315161020-5 ◽

2018 ◽

pp. 127-169

Author(s):

Pritam Kalia ◽

Shrawan Singh

Keyword(s):

Shelf Life ◽

Vegetable Crops ◽

Nutritional Qualities

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Fungicide Resistance Management Guidelines for Cucurbit Downy and Powdery Mildew Control in the Mid-Atlantic and Northeast Regions of the United States in 2018

Plant Health Progress ◽

10.1094/php-12-17-0077-br ◽

2018 ◽

Vol 19 (1) ◽

pp. 34-36

Author(s):

Christian A. Wyenandt ◽

Margaret T. McGrath ◽

Kathryne L. Everts ◽

Steven L. Rideout ◽

Beth K. Gugino ◽

...

Keyword(s):

United States ◽

Powdery Mildew ◽

Fungicide Resistance ◽

Resistance Management ◽

The United States ◽

Vegetable Crops ◽

Fresh Market ◽

Control Programs ◽

Action Committee ◽

Unites States

In the mid-Atlantic and Northeast regions of the United States, more than 163,000 acres of fresh-market vegetable crops are grown annually. Two important diseases of cucurbit crops across the Unites States and world are powdery mildew caused by Podosphaera xanthii (formerly Sphaerotheca fuliginea [Schlecht ex Fr.] Poll.) and downy mildew caused by Pseudoperonospora cubensis. Resistance to a number of high-risk fungicides has been detected in both pathogens. To help cucurbit growers in the mid-Atlantic and Northeast regions properly manage both diseases, an updated fungicide resistance management table has been developed to promote the importance of understanding Fungicide Resistance Action Committee (FRAC) codes. This table provides a tool to allow cucurbit growers to develop season-long cucurbit downy and powdery mildew control programs.

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Biochemical Characterisation and Genetic Structure Provide Insight into the Diversity of the Mediterranean Tomato Ancient Varieties ‘San Marzano’ and ‘Re Fiascone’: New Resources for Breeding

Agronomy ◽

10.3390/agronomy12010018 ◽

2021 ◽

Vol 12 (1) ◽

pp. 18

Author(s):

Pasquale Tripodi ◽

Rosa Pepe ◽

Gianluca Francese ◽

Macellaro Rosaria ◽

Vincenzo Onofaro Sanajà ◽

...

Keyword(s):

Vegetable Crops ◽

Fresh Market ◽

Breeding Programs ◽

Campania Region ◽

Study Approach ◽

Solanum Lycopersicum L ◽

Biochemical Characterisation ◽

Double Approach ◽

The Mediterranean ◽

Insight Into

Tomato (Solanum lycopersicum L.) is one of the most important vegetable crops highly appreciated for the nutritional properties and content of beneficial compounds for human health. After its domestication, this crop has been spread throughout the world and found its secondary centre of diversification in the Mediterranean basin, where numerous landraces have been developed. Among these, ‘San Marzano’ is a famous and remunerative PDO variety for processing and fresh market consumption. ‘Re Fiascone’ is an ancient cultivar for which ongoing efforts aim to promote its diffusion and commercialisation. Both find their origin in the Campania region in Southern Italy where in the past decades, several accessions have been selected and handed down by farmers. This study reports a comprehensive assessment for morphological and biochemical traits of twenty-one accessions of the two landraces. Fruit morphology and content of sugars and flavonoids were the most discriminating parameters among cultivars. Among sugars and organic acids, fructose and citric acid were the most represented compounds, respectively. We found level of trans-lycopene and β-carotene up to 112.82 and 16.29 µg g−1 of fresh product, respectively, while ascorbic acid levels reached values up to 22.48 mg 100 g−1 of fresh weight. Molecular analysis has been performed using a double approach for microsatellite genotyping based on capillary electrophoresis and high-resolution melting. Results highlighted a separation of the accessions according to ‘Re Fiascone’ and ‘San Marzano’ identifying both unique and admixed accessions between the two groups. The study approach aims at the recovery and valorisation of local genetic resources, but also at the identification of traits of interest to transfer in breeding programs.

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