Performance of Broccoli Cultivars in Spring and Fall Evaluations in Pennsylvania

Sánchez, Enrique Martínez-Salanova; Butzler, Thomas M.; Stivers, Lee; Pollock, Robert; Elkner, Timothy E.; Bogash, Steven M.; Lamont, William J.

doi:10.21273/horttech03519-16

Cited by 3 publications

(3 citation statements)

References 7 publications

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“…The impact of heat units and fluctuating temperatures on maturity dates, cultivar selection, and physiologic disorders for broccoli under high tunnels is a topic that would benefit from further exploration. Also, we chose to maximize head size (i.e., dinner-plate size) before harvesting, but many growers choose to harvest smaller heads and then return to cut subsequent side shoots (Sanchez et al, 2016); this decision impacted our days to harvest and total yield estimates.…”

Section: Discussionmentioning

confidence: 99%

Winter Broccoli and Cauliflower under Organic High Tunnels in a Humid, Subtropical Climate

O’Connell

Tate

2017

horts

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Abstract. There is a lack of information related to adapting high tunnel systems to humid, subtropical climates in the Southeastern United States, resulting in a disadvantage for their use to extend growing seasons and meet the increasing demand for local horticulture products. This research project explored the possibility of growing organic broccoli and cauliflower (Brassica oleracea L.) under high tunnels during two consecutive fall/winter seasons in northeast Georgia (USDA plant hardiness zone 8a), particularly evaluating questions related to crop feasibility, planting dates and cultivar choices. Marketable yields for high tunnel broccoli ranged from ' '11,800 to 15,800 kg · ha L1 and were not consistently affected by either planting date or cultivar type. Broccoli required an additional 8-45 days to reach maturity compared with seed catalog estimates with harvesting occurring during mid-December to mid-January. Marketable yields for high tunnel cauliflower ranged from ' '8600 to 26,000 kg · ha L1 and were affected primarily by the cultivar type. Cauliflower required an additional 19-56 days to mature with harvesting occurring during the entire month of January. The first season was cooler than the second with the lowest growing degree days (GDD) units accumulated during the months of January and February. Differences in air temperature at the crop canopy between the high tunnel system and open field were largely related to high tunnel ventilation protocols that changed as the season progressed. An average heat gain of 7 to 8 8C under the high tunnels at crop canopy height was documented on the coldest days and an average of 1 8C gain on the warmest days compared with the open field. Overall, winter broccoli appeared more adaptable to high tunnels than cauliflower but production of both crops may be possible if planting dates and cultivar types are taken into account for the region.

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Section: Discussionmentioning

confidence: 99%

Winter Broccoli and Cauliflower under Organic High Tunnels in a Humid, Subtropical Climate

O’Connell

Tate

2017

horts

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“…Our model of conducting evaluations for 2 years at three sites brings rigor to the experiment, which facilitates publishing results in refereed journals. Thus far, six refereed articles from this program have been published [6][7][8][9][10][11], with two more in the pipeline. Additionally, recommendations have been disseminated through various extension channels, including articles and presentations at local and regional meetings and webinars.…”

Section: Building University Supportmentioning

confidence: 99%

“…Common objectives of cultivar evaluations include updating recommendations and identifying top and/or poor performing cultivars [5]. The objective of our program has been to provide farmers in Pennsylvania and the mid-Atlantic region with recommendations for top-yielding cultivars, primarily in conventional systems [6][7][8][9][10][11]; although, performance in organic systems has also been evaluated [10]. Additionally, we have measured some produce quality attributes.…”

Section: Introductionmentioning

confidence: 99%

Pennsylvania State University Statewide Cultivar Evaluation Program Model

Sánchez

Butzler

Elkner³

et al. 2021

Horticulturae

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Cultivar selection is an important managerial task for commercial farmers. Numerous available options provide marketing opportunities for farmers; however, they can also make cultivar selection time-consuming. For the past 13 years, a team of Penn State Extension educators and university faculty has implemented a new model to evaluate cultivars for key vegetable crops to assist farmers. Our approach started by building relationships within the vegetable industry with farmers, seed company representatives, and farmer-driven organizations who support our program with funding and gift-in-kind donations. We also added rigor to cultivar evaluations by conducting trials of key vegetable crops over 2 years at three locations. The results were used to develop cultivar recommendations, which were disseminated through various face-to-face and distance Extension avenues. The results were also published in refereed journals. The combination of funding, Extension products, and refereed articles led to university support. A drawback to our approach was the difficulty implementing uniform production methods at three experimental sites. The input of a statistical consultant assisted with overcoming this drawback. This model also required the use of strategies common to successful teams. Our methods are described here for those who desire to build a similar program.

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Fruit Yield and Physicochemical Quality Evaluation of Hybrid and Grafted Field-Grown Muskmelon in Pennsylvania

et al. 2021

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Selecting vegetable cultivars suitable to local environmental conditions and with quality traits desired by the evolving market and consumer needs is an important production decision farmers face annually. As seed companies continue to expand their offerings of new cultivars and rootstocks, selecting the best cultivar and/or scion/rootstock combination can be challenging for farmers. Land-grant universities, through their integrated research and extension programs, can provide an unbiased, science-based evaluation of the available cultivar and rootstock options to assist farmers in making this important selection. A two-year study was conducted to evaluate 20 hybrid cultivars and two grafted entries of muskmelons at three locations in Pennsylvania in 2018 and 2019 to provide farmers with science-based recommendations focused on fruit yield and physicochemical quality characteristics. Most cultivars did not differ in fruit yields from the standard “Aphrodite”. “Sugar Cube” produced more, smaller sized melons than “Aphrodite”. However, the combination of the soluble solids concentration, flesh pH, and titratable acidity values was not as favorable, indicating that consumer preference may be lower for “Sugar Cube” than for other cultivars. Yield from grafted entries was not different from the non-grafted “Aphrodite”; although, biotic and abiotic stressors favoring the use of grafting were not present throughout the study. Physicochemical evaluation of the combination of “Aphrodite” scion and “Flexifort” rootstock was more favorable than “Aphrodite/RS841” and non-grafted “Aphrodite”. This combination may be desirable even in the absence of yield stressors.

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Performance of Broccoli Cultivars in Spring and Fall Evaluations in Pennsylvania

Cited by 3 publications

References 7 publications

Winter Broccoli and Cauliflower under Organic High Tunnels in a Humid, Subtropical Climate

Winter Broccoli and Cauliflower under Organic High Tunnels in a Humid, Subtropical Climate

Pennsylvania State University Statewide Cultivar Evaluation Program Model

Fruit Yield and Physicochemical Quality Evaluation of Hybrid and Grafted Field-Grown Muskmelon in Pennsylvania

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