scholarly journals EFFECT OF PREPLANT BULB SOAK WITH UNICONAZOLE ON GROWTH AND DEVELOPMENT OF EASTER LILY

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1144e-1144
Author(s):  
Gary J. Wilfret
Keyword(s):  
Plant Growth ◽  
Flowering Time ◽  
Plant Height ◽  
Flower Development ◽  
Growth And Development ◽  
Lilium Longiflorum ◽  
Floral Buds ◽  
Easter Lily ◽  
Delayed Flowering

Plant growth and flower development of Easter lilies (Lilium longiflorum) were evaluated for 3 years (1988-90). Bulbs of cvs. Ace and Nellie White were soaked preplant in solutions of uniconazole at cones. of 0 to 5 ppm at durations of 1 to 5 minutes and compared to bulbs soaked in ancymidol at 5 to 40 ppm. Time of bulb soak had no effect on amount of solution absorbed and on growth and flower development. Plant height from bulbs soaked in water alone was variable among the 3 years, ranging from 56 to 70 cm for Nellie White and 55 to 89 cm for Ace. Ancymidol concs. of 5, 10, 20, and 40 ppm retarded plant height 10.8, 14.5, 33.8, and 46.2%, respectively. Uniconazole solutions at 0.625, 1.25, 2.5, 5, 10, and 20 ppm produced Nellie White plants 16.7, 70.4, 56.8, 46.9, 39.3, and 30.8% of the height of the water soaked bulbs, respectively. Response of Ace to similar uniconazole concentrations was slightly less. High uniconazole concentration (> 5 ppm) delayed flowering time and reduced the number of floral buds which developed. Variability among plants within uniconazole treatments was large and would not be acceptable commercially.

LEAF SENESCENCE OF EASTER LILY AS INFLUENCED BY ROOT/SHOOT GROWTH, PHOSPHORUS NUTRITION AND ANCYMIDOL

1979 ◽  
Vol 59 (3) ◽  
pp. 757-761 ◽  
Author(s):  
M. J. TSUJITA ◽  
D. P. MURR ◽  
GAIL JOHNSON
Keyword(s):  
Plant Height ◽  
Leaf Senescence ◽  
Shoot Growth ◽  
Phosphorus Content ◽  
Foliar Spray ◽  
Lilium Longiflorum ◽  
Dry Weight ◽  
Phosphorus Nutrition ◽  
Easter Lily ◽  
Delayed Flowering

The effect of ancymidol (A-Rest) applications and phosphorus nutrition on shoot and root growth and the development of lower leaf senescence in Easter lilies (Lilium longiflorum Thunb.) was examined. Ancymidol delayed flowering in the first but not in the second experiment. Bud count was not affected by application method of ancymidol. Plant height and shoot and root dry weight were reduced with 0.25 and 0.50 mg/15 cm pot ancymidol concentrations. Leaf senescence was increased by ancymidol, the effects of drench application being more severe than those of the foliar spray treatment. The phosphorus content of leaves and roots was not influenced by ancymidol. Phosphorus nutrition did not affect flowering, bud count or plant height but significantly affected dry weight and phosphorus content of roots and shoots. In the second experiment leaf senescence was reduced by high applications of phosphorus.

scholarly journals Substrate Drenches Containing Flurprimidol Suppress Height of ‘Nellie White’ Easter Lilies

2012 ◽  
Vol 22 (2) ◽  
pp. 164-168 ◽  
Author(s):  
Christopher J. Currey ◽  
Roberto G. Lopez ◽  
Brian A. Krug ◽  
Ingram McCall ◽  
Brian E. Whipker
Keyword(s):  
Plant Growth ◽  
Plant Height ◽  
Lilium Longiflorum ◽  
Growth Retardant ◽  
Flower Number ◽  
Height Control ◽  
Easter Lily ◽  
The Cost ◽  
Economical Alternative ◽  
Pot Plant

The objective of this research was to quantify how flurprimidol substrate drenches applied to ‘Nellie White’ easter lilies (Lilium longiflorum) affected height at flowering, time to flower, and flower number. In Expt. 1, size 9/10 ‘Nellie White’ easter lilies were treated with a 4-fl oz drench applied to the surface of the substrate when shoots were ≈3 inches tall providing 0.0, 0.02, 0.04, 0.08, 0.16, or 0.24 mg flurprimidol per pot or 0.03 or 0.06 mg uniconazole per pot. In Expt. 2, size 10/12 ‘Nellie White’ easter lilies were treated with 4-fl oz drenches applied to the surface of the substrate when shoots were ≈3 inches tall providing 0.0, 0.01, 0.02, 0.04, 0.06, or 0.08 mg flurprimidol per pot. In Expt. 1, plants treated with flurprimidol or uniconazole were up to 38.9 cm (59%) shorter than untreated plants, while time to flower and flower number remained unaffected by plant growth retardant (PGR) treatments. In Expt. 2, as the amount of flurprimidol increased from 0.01 to 0.08 mg/pot, plant height was suppressed linearly (r2 = 0.63), by up to 23.2 cm (28%), while time to flower and flower number remained unaffected. Additionally, the chemical cost for drenches containing flurprimidol is less than the cost of uniconazole required to achieve comparable height control. Flurprimidol substrate drenches appear to be an effective and economical alternative to control easter lily height.

Effect of Bensulfuron-Methyl on Cotton (Gossypium hirsutumL.) Growth and Development

1996 ◽  
Vol 10 (4) ◽  
pp. 851-855
Author(s):  
C. Dale Monks ◽  
Michael G. Patterson ◽  
Malcolm Pegues
Keyword(s):  
Methyl Ester ◽  
Plant Growth ◽  
Plant Height ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Growth And Development ◽  
Field Experiments ◽  
Mepiquat Chloride ◽  
Boll Rot ◽  
Effect On Yield

Field experiments were conducted in Alabama from 1992 through 1994 to evaluate the potential of the methyl ester of bensulfuron applied at sublethal rates as a plant growth regulator for reducing plant height and boll rot in cotton. Bensulfuron at 0.017 and 0.034 g ai/ha or mepiquat chloride at 10 g ai/ha was applied POST alone at the pinhead square or early-bloom stage of cotton growth or sequentially at 0.017 followed by (fb) 0.017 g/ha, 0.034 fb 0.034 g/ha of bensulfuron and 5 fb 5, 10 fb 10, 10 fb 20, or 20 fb 20 g/ha of mepiquat chloride. Mepiquat chloride had no effect on yield in 1992 and 1994 but decreased yield when applied sequentially in 1993. Bensulfuron was generally detrimental to first position fruit retention, and it delayed maturity. Treatments that reduced plant height did not reduce boll rot. Bensulfuron treatments that reduced plant height also reduced yield; therefore, the potential for its use as a growth regulator in cotton appears limited.

Effect of triapenthenol plant-growth regulator on canola height, yield, side branches and pod density

1992 ◽  
Vol 72 (4) ◽  
pp. 1153-1156 ◽  
Author(s):  
K. J. Kirkland
Keyword(s):  
Brassica Napus ◽  
Plant Growth ◽  
Field Experiment ◽  
Plant Height ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Growth And Development ◽  
Management Tool ◽  
Brassica Napus L ◽  
Growing Conditions

A 3-yr field experiment was conducted at the Scott Experimental Farm to determine the effect of the growth regulator, triapenthenol, on the growth and development of Argentine canola (Brassica napus L.). Triapenthenol reduced plant height 25–45 cm under optimal growing conditions. Increases in yield, branches and total pods were observed. Application at the bud stage was more effective than earlier treatment in the rosette. It was concluded that triapenthenol application to canola could be a useful management tool, particularly under optimal growing conditions.Key words: Canola, growth regulator, RSW-0411, lodging

INFLUENCE OF PHOSPHORUS NUTRITION AND ANCYMIDOL ON LEAF SENESCENCE AND GROWTH OF EASTER LILY

1978 ◽  
Vol 58 (1) ◽  
pp. 287-290 ◽  
Author(s):  
M. J. TSUJITA ◽  
D. P. MURR ◽  
A. G. JOHNSON
Keyword(s):  
Plant Growth ◽  
Leaf Senescence ◽  
Lilium Longiflorum ◽  
Phosphorus Nutrition ◽  
Total Chlorophyll ◽  
High Phosphorus ◽  
Easter Lily ◽  
Low Phosphorus

Severity of lower foliage senescence of Easter lilies (Lilium longiflorum Thunb.) was increased in response to application of ancymidol (A-Rest) in combination with low phosphorus nutrition. Leaf senescence in lilies could be related to a reduced foliar content of phosphorus and total chlorophyll. Plant growth was significantly retarded by high rates of A-Rest. Maintaining high phosphorus nutrition lessened the severity of leaf senescence but partially overcame the effect of A-Rest on growth.

scholarly journals Response of Easter Lily to Preplant Incorporation of Uniconazole into the Planting Medium

HortScience ◽  
1991 ◽  
Vol 26 (2) ◽  
pp. 152-154 ◽  
Author(s):  
Richard J. McAvoy
Keyword(s):  
Plant Growth ◽  
Final Height ◽  
Lilium Longiflorum ◽  
Stem Length ◽  
Effective Height ◽  
Treatment Groups ◽  
Height Control ◽  
Potting Medium ◽  
Easter Lily ◽  
Shoot Emergence

Lilium longiflorum Thunb. cv. Ace grown without plant growth regulators and plants drenched with 0.5 mg a.i. ancymidol per pot following shoot emergence were compared to plants growing in a medium containing uniconazole-impregnated amendments. Uniconazole was applied at rates of 0.18, 0.018, and 0.0018 mg a.i. per pot using either impregnated rockwool (RW) or copolymer acrylamide acrylate (CA). Two other treatment groups received a uniconazole drench at potting (0.018 or 0.0018 mg a.i. per pot). Impregnated CA resulted in undesirably short lilies (i.e., plants <1.5 times the height of the pot) when 0.18 mg uniconazole per pot was incorporated into the medium; effective height control was obtained with CA at 0.018 mg/pot; no height control was observed at 0.0018 mg/pot. Similarly, final height of lilies grown in medium containing uniconazole-impregnated RW decreased as the rate of uniconazole increased. Pre-emergence potting medium drenches with uniconazole (0.018 and 0.0018 mg a.i. per pot) did not significantly affect lily growth and flowering. Ancymidol drench was less effective at retarding stem length and plant height than medium incorporation of 0.18 mg uniconazole. Flowering was not significantly affected by any treatment. Chemical names used: a-cyclopropyl-a-(4-methoxy-phenyl)-5-pyriimidine methanol(ancymidol);B-[(4-cyclophenyl)methyl]-a-(1,1-dimethylethyl)1 H-1,2,4-triazole-1-ethanol(paclobutrazol);(E)-(p-chloro-phenyl)-4,4-dimethyl-2-(1,2,4-triazol-1-yl)-1-penten-3-ol(uniconazole).

scholarly journals Prevernalization Daily Light Integral and Vernalization Temperature Influences Flowering of Herbaceous Perennials

HortScience ◽  
2002 ◽  
Vol 37 (7) ◽  
pp. 1028-1031 ◽  
Author(s):  
Genhua Niu ◽  
Royal Heins ◽  
Arthur Cameron ◽  
William Carlson
Keyword(s):  
Plant Height ◽  
Flower Development ◽  
Flower Number ◽  
Lavandula Angustifolia ◽  
Herbaceous Perennials ◽  
Daily Light Integral ◽  
Delayed Flowering ◽  
Light Integral

The influence of daily light integral (DLI) before vernalization and vernalization temperature and duration on growth and flower development was determined for seed-propagated perennials Aquilegia ×hybrida Sims `Remembrance', Coreopsis grandiflora Hogg ex Sweet `Sunray', and Lavandula angustifolia Mill. `Hidcote Blue'. Seedlings were grown under two DLIs (4 or 14 mol·m-2·d-l) for 5 weeks before being vernalized at -2.5, 0, 2.5, or 5 °C for 2,4,5, or 8 weeks. `Remembrance' and `Sunray' plants were vernalized in the dark, while `Hidcote Blue' plants were vernalized in light at 5 to 10 μmol·m-2·s-l for 9 hourslday. After vernalization, plants were forced under a 16-h photoperiod in the greenhouse at 20±2 °C. `Remembrance' plants flowered uniformly when vernalized at 0 to 2.5 °C for 2 weeks or longer, and flower number, plant height, time to visible bud or to flower were generally not influenced by vernalization temperature or duration. No `Sunray' plants flowered without vernalization, and only a low percentage flowered with 4-week vernalization. Compared with low DLI, a 14 mol·m-2·d-1 before vernalization delayed flowering by 7 to 20 days in `Remembrance', but there were no substantial differences in flowering characteristics of `Sunray'. `Hidcote Blue' plants were best vernalized in the light at 5 °C for 8 weeks to obtain rapid and uniform flowering and the highest number of inflorescences. Flowering and survival percentages of `Hidcote Blue' were much lower for plants at 14 mol·m-2·d-l DLI compared to 4 mol·m-2·d-1.

scholarly journals Interaction of Shoot Emergence Date and Long Days after Controlled-temperature forcing of `Nellie White' Easter Lilies

1993 ◽  
Vol 118 (6) ◽  
pp. 741-746
Author(s):  
John M. Dole
Keyword(s):  
Plant Height ◽  
Lilium Longiflorum ◽  
Emergence Time ◽  
Easter Lily ◽  
Emergence Date ◽  
Shoot Emergence

`Nellie White' Easter lily bulbs (Lilium longiflorum Thunb.) were given 6 weeks of 5.5C, placed in the greenhouse, and divided into groups based on number of days to emergence: 0 to 6, 7 to 13, 14 to 20, or 21 to 27 days. At emergence, the shoots received 0, 1, 2, or 3 weeks of long days (LDs). The experiment was repeated for 3 consecutive years. Late-emerging plants had fewer days from emergence to visible bud and anthesis than early-emerging plants. Consequently, late-emerging plants flowered within 3 to 11 days of early emerging plants despite 16 to 22 days difference in emergence time. Late-emerging plants were tallest, while plants emerging in the second week had the most leaves. Flower count was not influenced by emergence date in Year 1. In Year 2, flower count decreased curvilinearly with later emergence. In Year 3, flower count was highest in plants emerging in the second week and lowest in the last week. Increasing LDs decreased the number of days from emergence to visible bud and anthesis but increased plant height. LDs did not affect leaf count in any year or flower count in Years 1 and 2. In Year 3, flower count increased with increasing weeks of LDs. LD × emergence date interactions existed, but varied from year to year.

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