Source: RUTGERS, THE STATE UNIVERSITY OF NEW JERSEY submitted to NRP
ALTERNATIVE SMALL FRUIT PRODUCTION STRATEGIES
Sponsoring Institution
National Institute of Food and Agriculture
Project Status
COMPLETE
Funding Source
Reporting Frequency
Annual
Accession No.
1017960
Grant No.
(N/A)
Cumulative Award Amt.
(N/A)
Proposal No.
(N/A)
Multistate No.
(N/A)
Project Start Date
Oct 11, 2018
Project End Date
Sep 30, 2023
Grant Year
(N/A)
Program Code
[(N/A)]- (N/A)
Recipient Organization
RUTGERS, THE STATE UNIVERSITY OF NEW JERSEY
3 RUTGERS PLZA
NEW BRUNSWICK,NJ 08901-8559
Performing Department
Plant Biology
Non Technical Summary
This project focuses on two different fruit crops - strawberries, a late-spring popular crop around the nation and goldenberries, an underutilized, highly nutritious fruit that could prove to be easily incorporated in CSA farm production and farm market sales.Our previous work with alternative fruit crops for CSAs and farmers markets showed that of several studied, goldenberries were the only crop studied that produced fruit worth further evaluation. This goldenberry project is aimed at providing growers with a reliable alternative small fruit crop for inclusion in their standard vegetable rotation. Alternatively, our work with strawberries will provide floral quality goals for strawberry growers and a method for assessing the floral status of plants in two versions of the plasticulture system. Interest in off-season strawberry production has steadily increased in the temperate zone of the United States even though a near year-round supply of relatively inexpensive fruit is available from California, Florida and Mexico. This work will provide an alternative production strategy for strawberries utilizing long day cultivars that will enable growers to provide a longer local strawberry season to consumers.
Animal Health Component
30%
Research Effort Categories
Basic
40%
Applied
30%
Developmental
30%
Classification

Knowledge Area (KA)Subject of Investigation (SOI)Field of Science (FOS)Percent
2051122106050%
2051129106050%
Goals / Objectives
This project will conduct the first systematic evaluation of Physalis germplasm to identify true goldenberry (P. peruviana), genotypes with characteristics that make them well-suited for commercial production. The project will also evaluate production systems utilizing white and black plastic mulch, trickle irrigation, and several training systems. Organoleptic profiles of genotypes with superior horticultural characteristics will be developed and consumer preference evaluated. Ultimately nutritious, horticulturally desirable germplasm that consumers like will be identified and seed of selected germplasm will be increased and made available to growers.This project will also demonstrate the clear relationship between floral status and productivity and develop floral quality goals for strawberry plants at critical stages of production (planting date, fertilizer application, row cover use and tunnel establishment) in two variations of the plasticulture system: (1) the traditional plasticulture system and (2) off-season plasticulture production utilizing long-day cultivars in low tunnels. This project will also develop the procedural manual for flower mapping and provide suggestions regarding the use of data generated by flower mapping for growers in the northeast.
Project Methods
GoldenberriesExperiment 1: Twenty-four genetic lines of globally sourced Physalis peruviana will be evaluated on black-plastic covered, drip irrigated, raised beds. Plants will be pruned to encourage vertical growth of the main stem, trained on a simple tomato trellis and allowed to produce lateral branches (normal growth habit). The experimental design is a randomized complete block replicated 10 times.Experiment 2: Two of the superior lines identified in previous evaluations at Rutgers Vegetable Farm III will be evaluated on black and white plastic-mulched, trickle-irrigated raised beds. Plants will be grown with and without trellising and with or without pruning. The experimental design is a split-split-split plot. Mulch color is the main plot replicated 10 times in a randomized complete block design. Genetic line is the sub-plot, trellising (with, without) is the sub-sub-plot and pruning (with, without) is the sub-sub-sub-plot.Data collected for both experiments will include: precocity (days to flower and fruit), productivity (kg fruit per plant), fruit size (g per fruit) and fruit quality (soluble solids, pH and initial general subjective evaluation). Data will also include trellis materials cost, time for installation, time spent training, pruning and harvesting.Organoleptic evaluations will be conducted as described in Durner (1992) during the third and fourth years for genotypes identified in initial subjective evaluations of quality as having commercial potential. Participants in the organoleptic evaluations will include students from Rutgers University and consumers at Rutgers Farmers Market, a weekly seasonal farmers market held at Rutgers Gardens.All data will be subjected to appropriate statistical analyses.The experiments will be refined and repeated in subsequent years to include newly identified genotypes available from various global sources and to modify trellising and pruning treatments based on prior year results. StrawberriesAll work will be performed at Rutgers Vegetable Research Farm III in New Brunswick, NJ.Experimental design and treatments:Traditional plasticulture system:The experimental design will be a split-split-split plot with ten replications. The treatments will include: cultivar (3), mulch color (2), planting date (3), fertilizer application timing (3), and row cover implementation date (3). Three short-day cultivars will be established in plasticulture production on 3 planting dates (August 1, Sept 1 and Oct 1) on black and white mulch. Fertilizer application will be via drip, 2, 4 or 6 weeks after planting. Row covers will be established on Oct 1, Nov 1, or Dec 1.Off-season plasticulture production of long-day cultivars:The experimental design will be a split-split-split-split plot with ten replications. The treatment factors will include: cultivar (2), mulch color (2), planting date (3), fertilizer application timing (3), low tunnel establishment date (3) and row cover implementation date (3). Two long-day cultivars will be established in plasticulture production on 3 planting dates (April 1, May 1 and June 1) on black and white mulch. Fertilizer application will be via drip, 2, 4 or 6 weeks after planting. Low tunnels use will begin when the temperature falls below 60F, 50F or 40F. Row covers will be established on Oct 1, Nov 1, or Dec 1.Methods and data collection:The first year three plants per treatment combination would be harvested biweekly from planting and flower mapped. Yield would be assessed the following year for short day cultivars and both the year of planting and in the spring for long-day cultivars. The experiment would be repeated a second and third year with modifications as needed. The clear relationship between floral status at different times during the production cycle and yield can then be documented and floral goals for each stage developed.The development of a flower mapping procedure and associated manual that growers could use will developed in years 1 through 3, finalized and distributed via grower meetings in the fourth year.

Progress 10/01/19 to 09/30/20

Outputs
Target Audience:Small to medium scale fruit and vegetable growers. Changes/Problems: Nothing Reported What opportunities for training and professional development has the project provided?An undergraduate student participated in this study, gaining valuable horticultural training How have the results been disseminated to communities of interest?Presentations (5) were made regarding goldenberries and strawberries at regional grower meetings. Flowering physiology work in strawberry has been published in refereed journals. . Durner, E.F. 2020. Enhancing Fall 'Albion' Strawberry Production With Holiday Light Strings. North Jersey Commercial Vegetable Growers Meeting, Flemington, NJ. February 26, 2020. Durner, E.F. 2020. Growing Goldenberries. North Jersey Commercial Vegetable Growers Meeting, Flemington, NJ. February 26, 2020. Durner, E.F. 2020. Growing Goldenberries. 2020 New Jersey Agricultural Convention and Trade Show (NJ ACTS) and New Jersey Vegetable Growers Meeting. Harrah;s Resort Hotel Convention Center, Atlantic City, New Jersey, February 5, 2020. Durner, E.F. 2020. Enhancing Fall "Albion" Strawberry Production. 2020 New Jersey Agricultural Convention and Trade Show (NJ ACTS) and New Jersey Vegetable Growers Meeting. Harrah;s Resort Hotel Convention Center, Atlantic City, New Jersey, February 5, 2020. Durner, E.F. 2020. Enhancing Fall 'Albion' Strawberry Production with Inexpensive Field Lighting_Does It Really Work? 2020 Mid-Atlantic Fruit and Vegetable Convention, Hershey, Pennsylvania, January 30, 2020. What do you plan to do during the next reporting period to accomplish the goals?We will be evaluating high tunnel production of goldenberries to alleviate the problems of low yield associated with the long growing season requirement of goldenberry. We will be evaluating fall season long-day strawberries from conditioned plug plants and the potential for extending their season with high tunnels and night interruption lighting to enhance the long-day flowering response. We will also continue the flower mapping / nitrogen fertilization work.

Impacts
What was accomplished under these goals? Goldenberry Sixty eight growers participated in on-farm goldenberry evaluation in 2020. As in 2018 and 2019, thorough grower evaluation of the 'Schoenbrunn Gold' genotype was limited in that many growers again reported that they did not harvest ripe fruit. The major factor contributing to this lack of production is the long growing season required by goldenberry. This limitation will be addressed in 2021 via a high tunnel trial at Rutgers Fruit Research Center in Cream Ridge, NJ. The work was planned for 2020, however, pandemic restrictions precluded a thorough evaluation of high tunnel production. One 50 foot gothic arched high tunnel was established to evaluate general feasibility of such an endeavor. Plants grew well and were much easier to manage in the high tunnel system than in the field, suggested that high tunnel production of goldenberries is worth pursuing. Growers have enjoyed participating in this work. Many growers did not submit comments regarding field performance of the genotype we sent them. Perhaps the lack of productivity has discouraged many of the participants. Strawberry A high tunnel trial assessing the feasibility of fall/winter production of transplants conditioned with daylength and nitrogen during propagation using the long-day cultivar 'Albion' was established at the Cream Ridge Research Center. To date (December 1) no fruit has been produced. Two growers are participating in the trial this year and will provide valuable feedback. A trial to evaluate flower mapping of the short-day cultivar 'Chandler' was established at each of two locations (Cream Ridge and Snyder Farm). Samples from each site have been flower mapped weekly during October and November to develop a baseline profile of floral status of a short day cultivar in the plasticulture system. In addition, plants were subjected to various nitrogen fertilization treatments (none, one application at 800 ppm (one week after floral initiation was observed), and two applications at 800 ppm (one and two weeks after floral initiation was observed). Floral status will be monitored over the winter and productivity monitored in the spring to assess whether or not specifically timed nitrogen applications based on floral status observed with flower mapping significantly affect production.

Publications

  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Durner, E.F., 2020. Growth of Seascape strawberry (Fragaria X ananassa Duch.) is altered by photoperiod and nitrogen conditioning. The Journal of Horticultural Science and Biotechnology,DOI:10.1080/14620316.2020.1719906.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Durner, E.F. 2020. Growing Goldenberries. Proceedings of the 2020 New Jersey Agricultural Convention and Trade Show (NJ ACTS) and New Jersey Vegetable Growers Meeting. Harrah's Resort Hotel Convention Center, Atlantic City, New Jersey.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Durner, E.F. 2020. Enhancing Fall Albion Strawberry Production. Proceedings of the 2020 New Jersey Agricultural Convention and Trade Show (NJ ACTS) and New Jersey Vegetable Growers Meeting. Harrah's Resort Hotel Convention Center, Atlantic City, New Jersey.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Durner, E.F. 2020. Enhancing Fall Albion Strawberry Production with Inexpensive Field Lighting_Does It Really Work? Proceedings of the 2020 Mid-Atlantic Fruit and Vegetable Convention, Hershey, Pennsylvania.


Progress 10/11/18 to 09/30/19

Outputs
Target Audience:Small to medium scale fruit and vegetable growers. Changes/Problems: Nothing Reported What opportunities for training and professional development has the project provided?An undergraduate student worked on this research How have the results been disseminated to communities of interest?Durner, E.F. 2019. Fall Strawberries and Goldenberries: Alternative Annual Fruits for New Jersey Growers. 2019 New Jersey Agricultural Convention and Trade Show (NJ ACTS) and New Jersey Vegetable Growers Meeting. Harrah;s Resort Hotel Convention Center, Atlantic City, New Jersey, February 5, 2019. Durner, E.F. 2019. Goldenberries: A New Superfruit for North America. 2019 Mid-Atlantic Fruit and Vegetable Convention, Hershey, Pennsylvania, January 31, 2019. Durner, E.F. 2019. Strawberry Flower Mapping: Understanding Plant Development and Its Effect on Yield. 2019 Mid-Atlantic Fruit and Vegetable Convention, Hershey, Pennsylvania, January 31, 2019. Flowering physiology work in strawberry has been published in refereed journals. What do you plan to do during the next reporting period to accomplish the goals?We will be evaluating high tunnel production of goldenberries to alleviate the problems of low yield associated with the long growing season requirement of goldenberry. We will be evaluating fall season long-day strawberries from conditioned plug plants and the potential for extending their season with high tunnels and night interruption lighting to enhance the long-day flowering response.

Impacts
What was accomplished under these goals? Goldenberry One hundred thirty five growers participated in on-farm goldenberry evaluation in 2019. As in 2018, thorough grower evaluation of the 'Schoenbrunn Gold' genotype was limited in that many growers again reported that they did not harvest ripe fruit. The major factor contributing to this lack of production is the long growing season required by goldenberry. This limitation will be addressed in 2020 via a high tunnel trial at Rutgers Fruit Research Center in Cream Ridge, NJ. Based on general e-mail interactions with growers, many of them enjoyed participating in this work. Many growers did not submit comments regarding field performance of the genotype we sent them. Perhaps the lack of productivity has discouraged many of the participants. In another experiment, the number of fruit, average fruit weight and estimated potential yield per plant was assessed for 18globally sourced genotypes. No significant differences in yield were detected among the genotypes and productivity was greater in 2019 compared to the previous year Variability among goldenberry genotypes in 2019 was limited as in 2018. Again, two fruiting 'types' could be discerned among the 18 goldenberry lines evaluated: (1) genotypes producing smaller, marble sized and shaped fruit weighing approximately 2 - 5 g each and (2) genotypes producing larger, more irregularly shaped fruit weighing 5 - 8 g each. The average number of fruit per plant ranged from 240 to 742 and smaller fruited genotypes generally tended to produce more fruit per plant compared to larger fruited genotypes. Yield per plant ranged from as low as 900 g per plant (~1.9 lb) to as high as 2200 g per plant (4.9 lbs per plant). Fruit size and estimated yields were much higher in 2019 compared to 2018 and closer to previous estimates from 2017. Larger fruited genotypes had a more fruit-like, tropical flavor compared to the smaller fruited genotypes which often had a background bitter flavor and the bitter flavor did not make the smaller fruited genotypes undesirable. The larger fruited genotypes received more favorable comments from informal taste tests than the smaller fruited genotypes with respect to desirability, similar to 2018. All genotypes were fairly consistently attractive with nice fruit shapes (round rather than irregular) and color (golden yellow/orange). The larger fruited genotypes sometimes had slightly irregularly shaped fruit, however, they were still attractive and nicely colored. Based on general observations over the two year test period, we recommend growing goldenberries on black plastic mulch, with a simple trellis and pruning plants until the first bifurcation of the main stem. Strawberry A field trial assessing the fesibility of in-the-field daylength extension using low-cost light strings to enhance long-day flowering in strawberry was established at the Cream Ridge Researh Center.Yield through September from the Cream Ridge planting was on average 140 g/plant. At 15,000 plants per acre, this translates into ~4,600 lbs per acre. Additional fruit is harvested in October. With an establishment cost of $10,315 per acre, Net income per acre through September would be $8085 at $4.00/lb and $12685 at $5/lb. Two growers also participated in this study. Both growers were enthusiastic and established production plantings on their farms. Unfortunately, one grower produced no fruit due to deer damage and the other produced no fruit due to lack of weed control. Both growers will participate next season and both issues will be addressed as described above. We learned three valuable lessons this season: (1) deer protection must be implemented with this system and the simple temporary monofilament deer fence works well as demonstrated by its use at Cream Ridge; (2) Weed control is imperative with this system; (3) Pre-conditioned plug plants may be more suitable for growers since establishing field lighting is possible, but may be problematic for growers not near a source of electricity. With pre-conditioned plugs, no field lighting is needed.

Publications

  • Type: Journal Articles Status: Published Year Published: 2019 Citation: Durner, E.F., 2019. Effective Analysis of Interactive Effects with Non-Normal Data Using the Aligned Rank Transform, ARTool and SAS� University Edition. Horticulturae 5(3): 57  69 https://doi.org/10.3390/horticulturae5030057
  • Type: Journal Articles Status: Published Year Published: 2019 Citation: Durner, E.F., 2019. Responses to nitrogen conditioning in Albion strawberry (Fragaria X ananassa Duch.) for off-season plasticulture production are primarily qualitative rather than quantitative. Scientia Horticulturae, 257 https://doi.org/10.1016/j.scienta.2019.108684 , published online 18 July 2019.