Effects of runner removal on productivity and plant growth of two day-neutral strawberry cultivars in Ontario, Canada

Hughes, Becky R.; Zandstra, J.W.; Taghavi, Toktam; Dale, Adam

doi:10.17660/actahortic.2017.1156.50

Cited by 7 publications

(9 citation statements)

References 7 publications

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“…Although a reduced number of primary stolons was observed in 63-day treatment, each stolon produced more daughter plants due to longer growth period, compared with the 21-day treatment and the 7-day treatment. This observation is consistent with the results of study of Hughes et al (2017), who investigated the effects of stolon removal on plant growth of two EB strawberry cultivars (Albion and Seascape) at two sites in Canada. Hughes et al ( 2017) implemented 26.2 ± 0.4 z 7-day treatment" is that stolon removal/daughter plant harvest occurred at 7-d interval; "21-day treatment" is that stolon removal/daughter plant harvest occurred at 21-d interval; "63-day treatment" is that stolon removal/daughter plant harvest occurred at 63-d interval.…”

Section: Discussionsupporting

confidence: 91%

“…Moreover, EB cultivars usually produce fewer stolon and daughter plants than SB cultivars (Durner et al, 1984), leading to lower overall propagation numbers in strawberry nursery operations. Basic knowledge on how cultural practices in strawberry nurseries might alter propagation rates of strawberry plants are widely unknown (Hughes et al, 2017). This is especially true for the time of stolon removal.…”

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confidence: 99%

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Timing of Stolon Removal Alters Daughter Plant Production and Quality in the Ever-bearing Strawberry ‘Albion’

Shi¹,

Hernández²,

Hoffmann³

2021

horts

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Commercial strawberry (Fragaria ×ananassa Duch.) plants propagate through the development of stolons (runners) with attached daughter plants. While it is known that temperature and photoperiod affect strawberry propagation, little knowledge exists on whether cultural methods may influence stolon and daughter plant development. The objective of this study was to characterize the impact of three stolon removal treatments on the development of daughter plants in the ever-bearing strawberry ‘Albion’. Treatments included 1) stolon removal every 7 days, nine times total; 2) stolon removal every 21 days, three times total; and 3) one-time stolon removal after 63 days. Strawberry plants were grown in a controlled environment (26 °C, 507 μmol⋅m–2⋅s–1 photosynthetic photon flux density, 14-hour photoperiod) in soilless media and fertilized with a customized nutrient solution. Mother plants in the 63-day treatment produced more daughter plants (102 per plant), than in the 21-day treatment (33 per plant) and the 7-day treatment (16 per plant). In the 63-day treatment, daughter plants and stolons accumulated to 86.6% of the total biomass, to 42.9% in the 7-day treatment and to 60.6% of total biomass in the 21-day treatment. Mother plant organs (including roots, crown, and leaves) had less dry weight in the 63-day treatment compared with the 7-day treatment and 21-day treatment, respectively. Furthermore, the daughter plants produced at the 63-day treatment had smaller crown diameters (0.65 cm) and less dry weight (0.51 g) and a higher number of fully expanded leaves (2.9) and visible roots (13.4) compared with the 21-day treatment and the 7-day treatment. The results of this study show daughter plant production of strawberry plants declines significantly with shorter stolon removal intervals, indicating the need to adjust stolon removal in strawberry nurseries for optimal daughter plant production.

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Section: Discussionsupporting

confidence: 91%

mentioning

confidence: 99%

Timing of Stolon Removal Alters Daughter Plant Production and Quality in the Ever-bearing Strawberry ‘Albion’

Shi¹,

Hernández²,

Hoffmann³

2021

horts

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“…Similar results were obtained with varying severity of runner removal in the EB cultivars 'Albion' and 'Seascape'. Spring planted plants of both of these cultivars were grown in a modified hill system at two growing sites in Ontario, Canada [9]. Runner removal (once, three times, and weekly for two months) increased total and marketable yields in the 'Albion' cultivar at both sites in the planting year, while few effects were observed in the second year.…”

Section: Introductionmentioning

confidence: 99%

“…At the warmer site, total yield of 'Albion', but not 'Seascape', was reduced by 30% when runners were not removed. Plant dry weight and number of crowns increased with increasing frequency of runner removal [9]. Plant spraying with prohexadione-calcium, a chemical that blocks the biosynthesis of active gibberellins in plants, also strongly suppressed runner development and increased fruit yield in summer-planted 'Honeoye' SD strawberry grown in a plasticulture system in Maine, USA [4].…”

Section: Introductionmentioning

confidence: 99%

Effects of Runner Removal and Partial Defoliation on the Growth and Yield Performance of ‘Favori’ Everbearing Strawberry Plants

2021

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It is not known to what degree growth and fruit yield are source-limited in everbearing strawberry plants. The growth and yield performance effect of bi-weekly removal of all runners and/or one or two leaves during the cropping season of tunnel-grown ‘Favori’ everbearing strawberry plants was determined. Plants were grown on a table-top system in an open plastic tunnel under natural light conditions in Norway from May to October. Removal of runners and leaves was bi-weekly from 5 June until 25 September. Fruits were harvested from 5 July to 7 October. Bi-weekly runner removal increased total and marketable yield and number and size of fruits, while increasing leaf thinning had the opposite effects. However, none of the treatments affected the fruit number and yield of the first fruiting flush. The treatments did not affect realization of the yield potential of the plants at planting, whereas the continued floral initiation and fruit growth were enhanced by runner removal. Increasing leaf thinning had the opposite effects. Both floral initiation and fruit growth in heavily flowering and fruiting everbearing strawberry are source-limited owing to the high fruit/leaf ratio of such plants.

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“…Stolon production is typically considered an undesired response as a result of the partition of photosynthetic resources to asexual reproduction of runners instead of fruit. Although stolon removal can be costly, 30% decreases in strawberry yields have been reported when runners are not removed (Hughes et al, 2017). Although stolons were not removed until the end of each experiment, evaluating differences between cultivar runner production in facilities using CEA techniques could help to alleviate some of the manual labor costs without directly impacting strawberry fruit yields.…”

Section: Discussionmentioning

confidence: 99%

Supplemental Light-emitting Diode Effects on the Growth, Fruit Quality, and Yield of Two Greenhouse-grown Strawberry (Fragaria ×ananassa) Cultivars

Stuemky¹,

Uchanski²

2020

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Recent interest in off-season greenhouse-grown food crops, in combination with supplemental (top) lighting (SL), has created opportunities for local production of high-value fruit crops such as strawberries (Fragaria ×ananassa). Light-emitting diodes (LEDs) as SL can be tailored to a specific quality of radiation (i.e., wavelengths) to promote increased production and quality of greenhouse-grown crops. The objectives of this study were to evaluate the effects of three LED light bars on off-season controlled environmental agriculture (CEA) production of 2-day neutral strawberry cultivars: Albion and San Andreas. LED effects on overall vegetative biomass (e.g., stolon production, crown number, and leaf area), marketable fruit yield, and fruit quality [e.g., individual fruit weight and soluble solids content (SSC)] were measured during decreasing daylengths from Oct. to Dec. 2017 (Expt. 1) and increasing daylengths of Jan. to Apr. 2018 (Expt. 2). We hypothesized that the addition of SL via three LED treatments would increase measured parameters. Specifically, it was expected that the LED bars [high blue (HB) and low blue (LB)] with greater intensities of blue and red light would produce greater yields and also increase SSC of the berries. The hypotheses were tested by evaluating three LED light top bars [white far-red (WFR; 440–450 nm), HB, and LB], with wavelength peaks of blue (450 nm) and red (665 nm) light, but differing photosynthetic photon flux densities (PPFDs). Results from these experiments showed that individual strawberry fruit size and SSC were increased with the use of HB and LB LEDs during the shortening days of Expt. 1. Increased leaf area and crown number were also affected positively within all LED treatments (WFR, LB, HB) for ‘San Andreas’. Relative to Expt. 1, the lengthening days of Expt. 2 elicited more limited fruit responses, although increased stolon production within all treatments was reported. In addition, differences between cultivars in leaf area and SSC were observed with ‘San Andreas’ growing larger leaves and ‘Albion’ berries having a greater SSC. Individual fruit weight of both cultivars responded similarly, with increased fruit size in LB and HB, specifically within both Expt. 1 and Expt. 2. Our studies indicate that the addition of SL, in the form of LB and HB improved overall strawberry fruit quality and plant growth during shortening daylengths and under greenhouse CEA conditions.

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Effects of runner removal on productivity and plant growth of two day-neutral strawberry cultivars in Ontario, Canada

Cited by 7 publications

References 7 publications

Timing of Stolon Removal Alters Daughter Plant Production and Quality in the Ever-bearing Strawberry ‘Albion’

Timing of Stolon Removal Alters Daughter Plant Production and Quality in the Ever-bearing Strawberry ‘Albion’

Effects of Runner Removal and Partial Defoliation on the Growth and Yield Performance of ‘Favori’ Everbearing Strawberry Plants

Supplemental Light-emitting Diode Effects on the Growth, Fruit Quality, and Yield of Two Greenhouse-grown Strawberry (Fragaria ×ananassa) Cultivars

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