STOCK PLANT MANAGEMENT FOR CLIANTHUS CUTTING PRODUCTION.

1992 ◽  
pp. 317-322
Author(s):  
R.R. Williams ◽  
A.M. Taji
Keyword(s):  
Plant Management ◽  
Stock Plant ◽  
Cutting Production

scholarly journals Plant Growth Regulator Impacts on Vegetative Cutting Production of Moroccan Pincushion (Pterocephalus depressus) Plants

2021 ◽  
Vol 39 (2) ◽  
pp. 62-67
Author(s):  
Sean J. Markovic ◽  
James E. Klett
Keyword(s):  
Plant Growth ◽  
Gibberellic Acid ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Growth Index ◽  
Dry Weight ◽  
Stock Plant ◽  
Cutting Production

Abstract Moroccan pincushion (Pterocephalus depressus) is a drought-tolerant perennial that is being used in landscapes throughout arid areas of the western United States. This paper describes two experiments researching vegetative cutting production from stock plants. Moroccan pincushion stock plants received foliar applications of gibberellic acid (GA3), benzyladenine, ethephon, or auxin [indole-3-butyric acid (IBA)] plant growth regulators (PGR). Plant growth regulators were applied singularly and in combination with GA3 to determine efficacy on stock plant growth. A propagation study was conducted simultaneously to determine effects of these different PGR treatments applied to stock plants on the rooting of moroccan pincushion cuttings. The stock plant study showed GA3 + benzyladenine application increased cutting production over other PGR treatments. Fresh weight of moroccan pincushion cuttings did not differ among treatments. While cuttings did not differ in dry weight in experiment 1, statistical differences were observed in experiment 2. However, these differences in dry weight did not affect the quality of the cuttings. Cuttings from stock plants treated with GA3 + IBA treatment had the highest numerical growth index [(height + width + width)/3]. Cuttings from stock plants treated with GA3 alone or in combination with another PGR were all greater in average growth index and statistically differed from those without GA3 being applied. PGR treatments did not affect rooting percentages of the cuttings with nontreated stock plant cuttings successfully rooting at an average rate of 95%. However, GA3 + IBA was the only treatment where cuttings had 100% rooting for both experiments, indicating potential rooting benefits. Index words: Plant growth regulator, propagation, Pterocephalus depressus, vegetative cuttings. Species used in this study: Moroccan pincushion [Pterocephalus depressus Archibald]. Chemicals used in this study: gibberellic acid (GA3), benzyladenine, ethephon, indole-3-butyric acid (IBA).

scholarly journals Fertility Rate of Seacoast Marshelder Stock Plants Influences Cutting Production and Rooting Characteristics of Stem Cuttings

2008 ◽  
Vol 18 (3) ◽  
pp. 372-378
Author(s):  
Josiah Raymer ◽  
Mack Thetford ◽  
Debbie L. Miller
Keyword(s):  
Plant Growth ◽  
Growth Index ◽  
Plant Size ◽  
Fertility Rate ◽  
Stem Cuttings ◽  
Stock Plant ◽  
Coastal Species ◽  
Randomized Design ◽  
Reduced Height ◽  
Cutting Production

Seacoast marshelder (Iva imbricata) is an important coastal species contributing to building of foredunes along the Gulf of Mexico coastal regions. Hurricane activity disrupts natural regeneration, and the need for successful nursery production of sufficient plants for restoration warrants development of efficient propagation and production practices for restoration efforts. The objectives of these experiments were to investigate the effects of stock plant fertility on cutting production of seacoast marshelder and to evaluate the rooting qualities of cuttings harvested from hedged stock. Stock plants were established in 1-gal containers using a pine bark substrate amended with 6 lb/yard3 dolomitic limestone. Plants were fertilized with 15N–3.9P–10K controlled-release fertilizer (Osmocote Plus, 8- to 9-month formulation at 21 °C) applied as a top dressing at the recommended full label rate of 11 g per pot and 5.5, 15, and 21 g per pot (12 pots each) using a completely randomized design. Cuttings were collected and stock plants hedged on a regular interval [Expt. 1 (May to August) and Expt. 2 (August to November)]. Hedging of stock plants reduced height to 20 cm after each successive harvest of cuttings, but stock plant growth index increased with each successive harvest. Stock plant growth and cutting production increased as fertility rate increased, but responses were not consistent across harvest times. This trend was also true for rooting percentage and measures of root quality. Seacoast marshelder stock plant size increased as fertility increased to 15 g but not at 21 g. Inconsistencies in rooting responses across the production period were evident and were attributed to seasonal growth effects. An inverse relationship between rooting percentage and fertility rate was evident from May through July suggesting high levels of fertility should be avoided because rooting percentage, root number, and root length were reduced as fertility rate increased during that time. Conversely, higher fertilizer rates had a neutral to positive effect on rooting of seacoast marshelder during the months of August through November.

scholarly journals Stock Plant Production and Management Basics for Small Greenhouse Businesses

EDIS ◽  
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. 

scholarly journals Influence of Stock Plant Photoperiod on Cutting Production and Rooting

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 597c-597
Author(s):  
Paul Koreman ◽  
Art Cameron ◽  
Royal Heins ◽  
William Carlson
Keyword(s):  
Cold Treatment ◽  
First Flush ◽  
Perennial Species ◽  
Stock Plant ◽  
Fresh Weight ◽  
Phlox Paniculata ◽  
Cutting Production ◽  
Total Fresh Weight

Five vegetatively propagated perennial species that received 0 or 15 weeks of cold treatment were placed under seven photoperiods (10-, 12-, 13-, 14-, 16-, 24-, and 4-hour night interruption). Cuttings were harvested every 3 weeks, and their number and total fresh weight were recorded. Cutting bases were dipped in a 1200 ppm IBA solution for 5 seconds, stuck in perlite, and placed under mist for 3 weeks. Results varied by species. Stock plants of Achillea `Moonshine' produced the most cuttings under a 12-hour photoperiod. Noncold treated Coreopsis verticillata `Moonbeam' only produced cuttings under photoperiods longer than or equal to 14 hours. Cold treated `Moonbeam' produced cuttings under all photoperiods in the first flush. Eighty percent of cuttings from the first flush of Phlox paniculata `Eva Cullum' rooted when taken from plants growing under the 10-hour photoperiod, but only 1.2 cuttings per plant were harvested; 2.5 cuttings per plant were taken from Phlox grown under the 24-h photoperiod, but only 20% rooted. Only stock plants of Sedum `Autumn Joy' receiving a 14-hour photoperiod produced significant numbers of vegetative shoots. Cutting production and rooting of Veronica `Sunny Border Blue' was not affected by photoperiod.

scholarly journals Pinch Height of Stock Plants during Scaffold Development Affects Cutting Production

HortScience ◽  
2005 ◽  
Vol 40 (3) ◽  
pp. 650-653 ◽  
Author(s):  
James E. Faust ◽  
Larry W. Grimes
Keyword(s):  
Percentage Increase ◽  
Herbaceous Species ◽  
Stock Plant ◽  
Bright Pink ◽  
Cutting Production

Stock plants of six herbaceous species (Antirrhinum ×hybrida `Primrose with Vein' L., Chrysocephalum apiculatum `Golden Buttons', Diascia ×hybrida `Sunchimes Coral' Link & Otto, Lavendula dentata `Serenity' L., Osteospermum ×hybrida `Zulu' L., and Verbena ×hybrida `Lanai Bright Pink' L.) received nine different pinch treatments. Stock plants received a first pinch treatment at one of three pinch heights [low (L1), middle (M1), and high (H1)] followed by a second pinch at one of three pinch heights [low (L2), middle (M2), and high (H2)] in a 3 × 3 factorial arrangement. After the two pinches, cuttings were removed weekly from the stock plants. Cutting yield per stock plant increased as pinch height increased from L to H for both the first and second pinch for all species. A low first pinch followed by a low second pinch (L1L2) produced stock plants with the lowest cutting yield, while a high first pinch followed by a high second pinch (H1H2) produced the stock plants with the highest cutting yield for all species, e.g., the percentage increase in cutting yield was 133% for Antirrhinum, 98% for Chrysocephalum, 144% for Diascia, 80% for Lavendula, 250% for Osteospermum, and 44% for Verbena. This study suggests that pinch height during scaffold development of the stock plant is an important tool for increasing cutting production.

scholarly journals (229) Fertility Affects Cutting Production and Quality of Rooted Cuttings of Iva imbricata

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 1025B-1025
Author(s):  
Josiah Raymer ◽  
Mack Thetford ◽  
Debbie Miller
Keyword(s):  
Plant Height ◽  
Atlantic Coast ◽  
Plant Size ◽  
The United States ◽  
Fertility Rate ◽  
Root Number ◽  
Stock Plant ◽  
Fertility Rates ◽  
Gulf Region ◽  
Cutting Production

Seacost Marshelder (Iva imbricata Walter [Asteraceae]), a dominant Atlantic and Gulf region seashore plant, is a broad-leaved plant with a potential for building and stabilizing foredunes in the South Atlantic coast of the United States, and is recognized as an important food for beach mice. Two experiments were conducted where nursery liners were potted as stock plants and produced at four rates of fertility using Osmocote Plus (15N:9P2O5: 12K2O; 8–9 m formulation) applied as a top dress at 5.5, 11.0, 15.0, and 21.0 g/3.7-L container. The experiment was arranged as a CRD with 12 single-plant replicates of each fertility rate. Stock plant growth, cutting production, and subsequent rooting characteristics (percent rooting, root number, length) were evaluated for cuttings harvested at each of four harvests (30-day interval). Stock plant height increased as fertility rate increased for all harvests. After the first harvest, plant height did not differ among fertility rates above 5.5 g. Growth indices demonstrated that a 21.0-g application of fertilizer was necessary to increase stock plant size. The number of cuttings produced per stock plant increased linearly with increasing rate of fertility for all harvests. Cutting weight of individual cuttings increased linearly with an increase in fertilizer rate for harvests one and two, but cutting weight did not differ thereafter. The rooting response differed depending on the time of harvest. Percent rooting decreased with an increase in fertility rate for harvests two and three. Increased fertility rate did result in a decrease in root number for harvest one, but no further decrease was evident thereafter. Root length did not differ among harvest dates or fertility rates.

scholarly journals Effect of Stock Plant Photoperiod and Temperature on Cutting Production and Rooting of Herbaceous Perennials

HortScience ◽  
1997 ◽  
Vol 32 (3) ◽  
pp. 501E-501
Author(s):  
Paul Koreman ◽  
Art Cameron ◽  
Royal Heins ◽  
William Carlson
Keyword(s):  
Stock Plant ◽  
Herbaceous Perennials ◽  
Long Day ◽  
Phlox Paniculata ◽  
Short Days ◽  
Cutting Production

Previous research has shown that the photoperiod under which stock plants are grown has a significant effect on cutting production and rooting of several species of herbaceous perennials. Long-day (LD) treatment of stock plants promoted cutting production of certain LD perennials but reduced rooting. Cuttings from plants grown under short days rooted readily but few were produced. Stock plants were exposed to alternating photoperiods to determine if this treatment would yield many cuttings with high rooting potential. Coreopsis verticillata `Moonbeam' and Phlox paniculata `Eva Cullum' stock plants were given 4 weeks of 4-h night interruption (NI), while Sedum `Autumn Joy' stock plants were grown under 14-h days. After 4 weeks plants were given 0, 2, or 4 weeks of 10-h days. Cuttings were harvested and propagated under mist and three different photoperiods (10-h, 14-h, NI) for 4 weeks, after which rooting percentage and the number and length of roots produced by each cutting were measured. The results will be presented.

scholarly journals Effects of Ethephon on Stock Plant Management of Coreopsis verticillata, Dianthus caryophyllus, and Veronica longifolia

HortScience ◽  
2007 ◽  
Vol 42 (7) ◽  
pp. 1616-1621 ◽  
Author(s):  
Janelle E. Glady ◽  
N. Suzanne Lang ◽  
Erik S. Runkle
Keyword(s):  
Dianthus Caryophyllus ◽  
Plant Management ◽  
Internode Elongation ◽  
Perennial Species ◽  
Stock Plant ◽  
Long Day ◽  
Leaf Necrosis ◽  
Vegetative Cuttings ◽  
Herbaceous Perennial ◽  
Short Days

Some day-neutral herbaceous perennial species can be difficult to manage as vegetative stock plants because they initiate floral buds under most environmental conditions. Although flowering of many long-day plants can be inhibited by maintaining plants under short days, extension growth is often suppressed, which makes cuttings difficult to harvest. Ethephon (2-chloroethylphosphonic acid) is an ethylene-releasing chemical used to abort flowers, inhibit internode elongation, and promote branching of floriculture crops. The objective of this research was to determine whether ethephon is effective at maintaining vegetative growth and increasing the number of cuttings harvested for three popular perennial species that are difficult to maintain as vegetative plants. Spray applications of ethephon were applied for 10 weeks biweekly (every 2 weeks) or weekly at 0, 400, 600, or 800 mg·L−1. Biweekly applications at 600 mg·L−1 or weekly applications at 400 mg·L−1 increased branching and the number of vegetative cuttings in Coreopsis verticillata L. ‘Moonbeam’ and Veronica longifolia L. ‘Sunny Border Blue’, respectively. Ethephon application increased branching in Dianthus caryophyllus L. ‘Cinnamon Red Hots’, inhibited leaf expansion and stem extension, but did not abort flowers, and induced marginal leaf necrosis at all concentrations tested. Therefore, ethephon application has potential to maintain vegetative stock plants of C. verticillata ‘Moonbeam’ and V. longifolia ‘Sunny Border Blue’ but not D. caryophyllus ‘Cinnamon Red Hots’.

scholarly journals Effects of Growth Substrate and Container Size on Cutting Production from Mojave Sage Stock Plants

2020 ◽  
Vol 30 (4) ◽  
pp. 528-531
Author(s):  
Sean J. Markovic ◽  
Shana G. Brown ◽  
James E. Klett
Keyword(s):  
Plant Productivity ◽  
Growth Substrate ◽  
Stock Plant ◽  
Important Concern ◽  
Plant Experiment ◽  
Secondary Objective ◽  
Woody Growth ◽  
Vegetative Cuttings ◽  
Cutting Production ◽  
All Treatment

Stock plant productivity is an important concern for growers of mojave sage (Salvia pachyphylla) because this species produces more woody growth as the plant ages. The objective of the study was to determine the best growth substrate and container size combination to maximize stock plant productivity. A secondary objective was to determine whether the stock plant treatments influenced the rooting of vegetative cuttings. Three different container sizes (3, 12, and 15.5 qt) and four soilless substrates composed primarily of bark, peat, and perlite (substrate 1); bark, peat, and vermiculite (substrate 2); bark, peat, and coarse perlite (substrate 3); and peat (substrate 4) were used. The stock plant experiment was conducted using 12 treatment combinations, and a subset of those stock plants was selected randomly for the rooting study that immediately followed the stock plant experiment. Stock plants responded to substrate treatments differently. The most successful stock plants, which produced more cuttings per plant and per square foot, as well as larger cuttings, were those grown in substrate 3. Regardless of substrate, the highest number of cuttings per square foot was obtained from stock plants grown in 3-qt containers, indicating that the smaller containers allow for the most efficient use of space when growing mojave sage stock plants for 4 to 6 months. The rooting of vegetative cuttings was successful (88% to 100% of cuttings rooted after 4 weeks under mist) for all treatment combinations.

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