Effects of Transplanting and Runner Releasing Times of Mother Plants for the Control of Daughter Plant Production Time in Cutting Strawberries

Anthracnose crown rot (ACR), caused by Colletotrichum gloeosporioides, is a serious disease of strawberry (Fragaria × ananassa) in nurseries and fruiting fields in the southeastern United States. This study was conducted to determine the potential of alternative hosts for initial inoculum source and spread that causes ACR in strawberry nurseries. Results indicated that Parthenocissus quinquefolia is a noncultivated host of C. gloeosporioides in North Carolina and may serve as an initial inoculum source for planting material. Sources of inoculum data were complemented with a 2-year study of disease incidence and spread in simulated nursery production experiments. Sixty days after inoculation of the mother plants in the nursery, three different inoculation levels showed a significant positive correlation (r = 0.78, P < 0.004) with the quiescent infection (QI) incidence on the runner or daughter plants at the end of the nursery production cycle. Runner plant counts from different proportion of mother plants' inoculation treatments indicated that runner plant production was negatively and significantly (P < 0.001) affected by C. gloeosporioides. Infected tips used to produce transplants destined for fruit production resulted in 29.3 and 16.8% mortality in plug trays in 2007 and 2008, respectively. Tracking foliar QI incidence that resulted from dispersal of inoculum from an introduced point source in the nursery showed a sharp decline at 1 m and beyond from the inoculation focus. Although the exponential model (R2 = 0.92 to 0.94) had slightly higher coefficients of determination than the modified power law (R2 = 0.89 to 0.90), residual plots indicated that the modified power law model fit the disease gradient data better than the exponential model in both years. Results from our dispersal study indicated that rogueing of infected plants within a 4-m radius of infection foci would reduce the risk of transferring infected runner plants from the nursery to the fruiting field.

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Seed Potato Growth and Yield as Affected by Mother Plant Exposure to Herbicides

Weed Technology ◽

10.1017/wet.2016.6 ◽

2017 ◽

Vol 31 (1) ◽

pp. 136-147 ◽

Cited By ~ 1

Author(s):

Jed B. Colquhoun ◽

Daniel J. Heider ◽

Richard A. Rittmeyer

Keyword(s):

Seed Potato ◽

Tuber Yield ◽

Mother Plant ◽

Plant Production ◽

Growth And Yield ◽

Tuber Quality ◽

Tuber Growth ◽

Potato Plants ◽

Mother Plants ◽

Daughter Tuber

In a repeated multi-year study, mother potato plants were exposed to herbicides at rates that simulated off-target application, such as through tank contamination. Following exposure of mother plants to herbicides, seed from mother plants was planted in the following growing season and crop growth, yield and tuber quality were quantified. Visual injury from herbicides was observed both in the mother plant and daughter tuber growing seasons and occasional impacts on tuber yield were noted. However, an inconsistent relationship was observed for herbicide related injury and tuber yield reductions of mother potato plants with daughter tuber growth and yield. The lack of consistency in the relationship between visual potato injury in the mother plant production and adverse daughter tuber growth and yield in the following year challenges traditional crop scouting as a tool to predict off-target herbicide risk near seed potato production.

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565 Use of Cooperative Learning Exercizes to Introduce Concepts in Potted Plant Production Classes

HortScience ◽

10.21273/hortsci.35.3.493c ◽

2000 ◽

Vol 35 (3) ◽

pp. 493C-493

Author(s):

Neil O. Anderson

Keyword(s):

Cooperative Learning ◽

Market Share ◽

Role Playing ◽

Plant Production ◽

Limiting Factors ◽

Class Discussion ◽

Total Production ◽

Labor Input ◽

Production Time ◽

Potted Plant

In production classes, students often commence the class by learning complicated crop-specific production cycles. Rarely are they afforded the opportunity of spending several class periods to first understand the major differences between commercial crops for production time, labor input, and market share. A cooperative learning exercise was created for the first week of lectures in potted plant production class (Hort 4051) at the Univ. of Minnesota (n = 18 students). Students were assigned to working groups for discussion and synthesis of the assignment. One week later, each group turned in their recommendations and one lecture session was devoted to in-class discussion of their answers. The exercise was in the form of a memo from a commercial company, Floratech, addressed to the students as the newly hired potted plant production specialists. In the memo, a graphical summary was presented of 13 major and minor potted crops, contrasting total production time, labor input, and market share for each crop. As production specialists, the student's primary task was to interact with all staff (other students role-playing various positions within the company) to answer the following question: “What is the most realistic, cost-effective location on the graph that Floratech should aim to move all crops?” Group discussions, both within and outside of class, focused on the noticeable trends depicted by the graph and the limiting factors that prevented crops from moving to the ideal location. Growers and breeders were quizzed on what factors kept each crop in the specific locations on the graph. The majority of student chose the midpoint of the graph as the best location. The exercise successfully peaked student's awareness of crop differences and the limiting production factors. Throughout the semester, students referred back to this graph to pinpoint the location for each crop covered.

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Strawberry Transplant Propagation in Elevated Horizontal Troughs

HortScience ◽

10.21273/hortsci.33.3.537e ◽

1998 ◽

Vol 33 (3) ◽

pp. 537e-538

Author(s):

Eric B. Bish

Keyword(s):

High Temperatures ◽

Production System ◽

Plant Production ◽

Leaf Wetness ◽

Root Tips ◽

Mother Plants ◽

Bare Root ◽

Disease Free ◽

Active Root ◽

Strawberry Cultivars

Commercial strawberry cultivars are vegetatively propagated in field nurseries. Mother plants produce daughter plants on stolons in response to long photoperiods and high temperatures. The daughter plants are primarily removed from the field as a bare-root transplant. These bare-root transplants can be extremely stressed in this digging process, resulting in plant variability and pathogen infestation. A strawberry transplant production system has been developed that uses micropropagated disease free mother plants in elevated horizontal culture. The mother plants are grown in suspended plastic troughs (10-cm width by 10-cm depth) with a soilless medium consisting of vermiculite and perlite. The mother plants are subfertigated via drip tubing to avoid leaf wetness. Stolons produced by the mother plants hang over the trough and continue to grow down toward the ground. The stolon tips, are harvested and rooted in plug trays. This study compared proliferation rates of several strawberry cultivars. The benefits of the elevated system were: disease-free plants, high-density daughter plant production, all the runners could be removed at one time and separated for propagation, and the daughter plants had active root tips that established quickly.

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Early topping: an alternative to standard topping increases yield in cannabis production

Plant Science Today ◽

10.14719/pst.2020.7.4.927 ◽

2020 ◽

Vol 7 (4) ◽

Author(s):

Sylvain Gaudreau ◽

Tagnon Missihoun ◽

Hugo Germain

Keyword(s):

New Method ◽

Production Time ◽

Axillary Shoots ◽

Shoot Number ◽

Rooting Media ◽

Mother Plants ◽

Minimal Adjustment

In commercial settings, cannabis is generally propagated through cuttings, a process referred in the industry as cloning. Some producers perform either topping or fimming to trigger the production of axillary shoots, which will enhance the number of flowers per plants and thus increase the yield of the cannabis plants. Topping or fimming is generally performed after the cuttings have been transferred to rooting media for two weeks. We have tested a new method to increase the shoot number per plant. The modification of the standard topping method consist of performing the topping on mother plants, prior to taking the cuttings for cloning, and the cuttings are taken one week after the topping is performed. The resulting plantlets develop axillary shoots much faster and the time of production from cuttings to harvesting is decreased by 7-10 days. The method proposed herein requires minimal adjustment to the existing workflow and the plants produce as much as when standard topping is performed. Moreover, this method cuts backs on the production time and nearly two weeks are saved compared to the standard topping procedure since the plantlets do not need to recover after topping. Application of this new procedure results in faster production time and ultimately enhanced productivity.

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Stock Plant Production and Management Basics for Small Greenhouse Businesses

EDIS ◽

10.32473/edis-ep284-2005 ◽

2019 ◽

Vol 2005 (15) ◽

Author(s):

James L. Gibson ◽

Christopher B. Cerveny

Keyword(s):

Flower Color ◽

Poor Quality ◽

Plant Production ◽

Plant Management ◽

Publication Date ◽

Stock Plant ◽

University Of Florida ◽

The Road ◽

Leaf Variegation ◽

Mother Plants

Vegetative propagation is an important component of ornamental plant production, because noteworthy characteristics such as flower color or leaf variegation remain true to type from the stock plant, unlike the varied results achieved through seedling propagation. Therefore, maintaining good stock or “mother plants” is critical for success down the road. Poor stock plant management leads to poor quality cuttings. This document contains information that provides some basic guidelines for successful stock plant management and stem cutting production. This document is ENH1021, one of a series of the Environmental Horticulture Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Original publication date December 7, 2005.

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

HortScience ◽

10.21273/hortsci15624-20 ◽

2021 ◽

pp. 1-7

Author(s):

Xiaonan Shi ◽

Ricardo Hernández ◽

Mark Hoffmann

Keyword(s):

Day Treatment ◽

Dry Weight ◽

Photosynthetic Photon Flux Density ◽

Plant Production ◽

Photon Flux ◽

Photon Flux Density ◽

Total Biomass ◽

Cultural Methods ◽

Mother Plants ◽

The Impact

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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Effect of growth regulators on plant production of strawberry mother plants

Scientia Horticulturae ◽

10.1016/0304-4238(92)90017-7 ◽

1992 ◽

Vol 52 (1-2) ◽

pp. 157-161 ◽

Cited By ~ 1

Author(s):

V.V. Pankov

Keyword(s):

Growth Regulators ◽

Plant Production ◽

Mother Plants

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THE EFFECT OF SPRING APPLICATION OF NEMATICIDES ON STRAWBERRY IN THE NIAGARA PENINSULA

Canadian Journal of Plant Science ◽

10.4141/cjps66-018 ◽

1966 ◽

Vol 46 (2) ◽

pp. 111-114 ◽

Cited By ~ 1

Author(s):

J. L. Townshend ◽

C. L. Ricketson ◽

J. Wiebe

Keyword(s):

Verticillium Wilt ◽

Sandy Loam ◽

Plant Production ◽

Pratylenchus Penetrans ◽

Fine Sandy Loam ◽

Mother Plants

Runner plant production and fruit yields increased when the susceptible strawberry varieties Earlidawn and Sparkle were grown on Vineland fine sandy loam treated with chloropicrin, Telone, or Vorlex but not with Nemagon. The numbers of Pratylenchus penetrans (Cobb) and the incidence of Verticillium wilt among mother plants were reduced by the successful treatments.

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