scholarly journals Benzyladenine Improves Summer Quality of Hosta

2000 ◽  
Vol 18 (1) ◽  
pp. 49-52
Author(s):  
Heather C. Schultz ◽  
Gary J. Keever ◽  
J. Raymond Kessler ◽  
Roland R. Dute
Keyword(s):  
Plant Growth ◽  
Foliar Spray ◽  
Growth Index ◽  
Leaf Number ◽  
Spray Application ◽  
Whole Plant ◽  
Summer Dormancy ◽  
Container Production

Abstract A study was conducted to determine the effects of benzyladenine (BA) on improving summer quality of hosta in container production and in the landscape. For container production, stock plants of Hosta ‘Sum and Substance’, H. sieboldiana ‘Elegans’, H. ‘Francee’, H. sieboldiana ‘Frances Williams’, H. plantaginea, and H. ‘Tokudama’ were divided and potted. When they showed signs of summer dormancy or foliar decline, half the plants of each cultivar/species received a single foliar spray application of 3000 ppm BA. In the landscape, half the established field-planted hosta with 27–4 initial offsets (‘Francee’) or 0–3 initial offsets (‘Frances Williams’) received a single foliar spray application of 3000 ppm BA when plants began to show signs of summer dormancy. BA stimulated the outgrowth of axillary and rhizomic buds in all cultivars/species in both parts of the study. Offsets formed more leaves on plants treated with BA compared to the untreated hosta. Offset leaf number was dependent on cultivar in both locations, and initial offset number affected leaf number for ‘Frances Williams’ in the landscape. Generally, BA application improved plant appearance of cultivars/species in both parts of the study. Cultivar/species and BA influenced whole plant growth index in container production, but had no effect in the landscape.

scholarly journals Root Mass and BA Affect Offset Formation in Hosta

2000 ◽  
Vol 18 (1) ◽  
pp. 45-48
Author(s):  
Heather C. Schultz ◽  
Gary J. Keever ◽  
J. Raymond Kessler ◽  
Roland R. Dute ◽  
John W. Olive
Keyword(s):  
Plant Growth ◽  
Root Development ◽  
Foliar Spray ◽  
Growth Index ◽  
Advanced Stage ◽  
Root Mass ◽  
Spray Application ◽  
Stage Of Development ◽  
Whole Plant ◽  
Mass Group

Abstract A study was conducted to determine the effects of root mass and benzyladenine (BA) on offset formation in hosta. Stock plants of two cultivars, ‘Francee’ and ‘Frances Williams’, were divided, and offsets were placed in either small, medium, or large root mass groups. Offsets were potted and, when surface root development was evident, half of the plants in each root mass group received a foliar spray application of 3000 ppm BA, while half served as BA controls. Offset formation was positively correlated with increasing root mass, regardless of BA application. BA stimulated the outgrowth of axillary and rhizomic buds in both cultivars. Offsets on plants treated with BA were at a more advanced stage of development (SOD) than offsets on BA controls, but root mass did not affect SOD. Root mass, but not BA, affected whole plant growth index, which increased with increases in root mass.

scholarly journals BA Does Not Reduce Detrimental Effects of High Nighttime Temperature on Offset Formation in Hosta

2001 ◽  
Vol 19 (1) ◽  
pp. 29-32
Author(s):  
Heather C. Schultz ◽  
Gary J. Keever ◽  
J. Raymond Kessler ◽  
Roland R. Dute
Keyword(s):  
Plant Growth ◽  
High Temperatures ◽  
Foliar Spray ◽  
Growth Index ◽  
Plant Quality ◽  
Spray Application ◽  
Whole Plant ◽  
Growth Chambers ◽  
Nighttime Temperatures

Abstract A study was conducted to investigate the effects of nighttime temperatures on offset formation in hosta, and determine if benzyladenine (BA) can overcome potential detrimental effects of high temperatures. Stock plants of two cultivars, ‘Francee’ and ‘Frances Williams’, were divided, potted, and allowed to establish. When roots had reached the substrate-container side interface, half the plants of each cultivar received a foliar spray application of 3000 ppm BA. Plants were immediately transferred to growth chambers programmed for a 12-hour photoperiod at 32C (90F) and a 12-hour dark temperature of 12.8C (55F), 18.3C (65F), 23.9C (75F), or 29.4C (85F). Plants grown at the three lower nighttime temperatures produced more offsets than plants grown at the highest nighttime temperature, but only when treated with BA (both cultivars) or in ‘Francee’ (±BA). Plants treated with BA formed more offsets than −BA plants and ‘Francee’ produced more offsets than ‘Frances Williams’, but only at the three lower nighttime temperatures. Across nighttime temperatures, both cultivars produced more offsets when treated with BA, and ‘Francee’ produced more offsets than ‘Frances Williams’, but only in the presence of BA. Whole plant growth index decreased as nighttime temperature increased, and generally was lower for ‘Frances Williams’ than for ‘Francee’. Plant quality or stage of offset development was not affected by nighttime temperature

scholarly journals BA Application Timing Affects Offset Formation in Hosta

2000 ◽  
Vol 18 (2) ◽  
pp. 63-65
Author(s):  
Heather C. Schultz ◽  
Gary J. Keever ◽  
J. Raymond Kessler ◽  
Roland R. Dute
Keyword(s):  
Foliar Spray ◽  
Growth Index ◽  
Leaf Number ◽  
Spray Application ◽  
Application Timing ◽  
Potted Plants

Abstract A study was conducted to determine the effects of timing of benzyladenine (BA) application following division and potting of hosta on offset formation as a means of accelerating propagation. Stock plants of two cultivars, ‘Francee’ and ‘Frances Williams’, were divided and potted. Plants received a single foliar spray application of 3000 ppm BA immediately after potting (0) or 1, 2, 3, 4, 5, or 6 weeks after potting. BA stimulated the outgrowth of axillary and rhizomic buds in both cultivars, but in most cases, only for plants in which BA application was delayed 3 or more weeks after potting. Compared to the non-treated control, plants treated with BA 3 or more weeks after potting produced more offsets; however, plants treated 0, 1, or 2 weeks after potting produced similar numbers of offsets as the control. Offsets on plants treated with BA formed more leaves than offsets on non-treated control plants, but application timing did not affect leaf number. ‘Francee’ produced offsets with more leaves than offsets of ‘Frances Williams’. Neither application timing nor BA affected growth index.

scholarly journals Bamboo Biochar Pyrolyzed at Low Temperature Improves Tomato Plant Growth and Fruit Quality

Agriculture ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 153 ◽  
Author(s):  
Ratna Suthar ◽  
Cun Wang ◽  
M. Nunes ◽  
Jianjun Chen ◽  
Steven Sargent ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Plant Growth ◽  
Fruit Quality ◽  
Growth Index ◽  
Application Rate ◽  
Soluble Solids ◽  
Solanum Lycopersicum L ◽  
Different Temperatures ◽  
Solids Content

As a soil amendment, biochar can significantly improve soil quality and crop growth. Few studies, however, have explored biochar effects on crop quality. This study investigated the amendment effects of bamboo biochar pyrolyzed at different temperatures on plant growth and fruit quality of tomato (Solanum lycopersicum L.). Tomato ‘Micro-Tom’ plants were grown in a sand medium amended with 0, 1, and 3% of biochars produced at 300 °C, 450 °C, and 600 °C, respectively. Plant growth was monitored, and fruit harvested at the red stage was analyzed for color, texture, soluble solids content, sugars, ascorbic acid, and acidity. Results showed that biochars produced at 300 °C and amended at 3% or pyrolyzed at 450 °C and amended at 1% increased plant growth index. Contents of glucose, fructose, soluble solids, ascorbic acid, and sugar-to-acid ratios of fruits produced from the two treatments were significantly higher than the other treatments. The improved plant growth and fruit quality were related to the higher concentrations of NO3, P, Ca, and Mg in the growing media. Our results suggest that optimizing biochar use can be achieved by targeting biochar production conditions and application rate, which resulted in desirable amendment and fruit quality effects.

scholarly journals Paclobutrazol Application Method Influences Growth and Flowering of `New Gold' Lantana

1996 ◽  
Vol 6 (1) ◽  
pp. 19-20 ◽  
Author(s):  
John M. Ruter
Keyword(s):  
Plant Growth ◽  
Control Plant ◽  
Growth Control ◽  
Foliar Spray ◽  
Growth Index ◽  
Dry Weight ◽  
Plant Size ◽  
Pine Bark ◽  
Root Dry Weight ◽  
Spray Applications

Paclobutrazol was applied as a foliar spray, root-medium drench, and impregnated spike to `New Gold' lantana grown in 2.8-liter pots. Plants were treated 14 June 1993 at rates of 0, 0.5, and 1.0 mg a.i. paclobutrazol/pot and were harvested 27 July 1993 when control plants required further pruning. Impregnated spikes reduced plant size and flowering to a greater degree than spray applications. Drenches reduced root dry weight and biomass compared to spray applications. Plants treated with 0.5 and 1.0 mg a.i. paclobutrazol/pot were not different in regards to plant growth and flowering. Compared to nontreated controls, plants treated with paclobutrazol had a reduced growth index, decreased shoot and root dry weight, and fewer flowers with open florets. All plants in the study were marketable, even though growth control was considered excessive. Lower rates than used in this study should be considered for controlling growth. These results suggest that impregnated spike formulations of paclobutrazol may control plant growth in pine bark-based media.

scholarly journals (93) Evaluating the Effectiveness of Prohexadione-Ca as a Plant Growth Retardant on Buddleia, Dianthus, Eupatorium, and Lilium

HortScience ◽  
2005 ◽  
Vol 40 (4) ◽  
pp. 1045E-1046
Author(s):  
Roberto G. Lopez ◽  
Erik S. Runkle
Keyword(s):  
Plant Growth ◽  
Foliar Spray ◽  
Lilium Longiflorum ◽  
Fruit Trees ◽  
Growth Retardant ◽  
Spray Application ◽  
Commercial Use ◽  
Dianthus Barbatus ◽  
Small Grains ◽  
Buddleia Davidii

Prohexadione-Ca (ProCa) is a relatively new plant growth regulator (PGR) that inhibits internode length in rice, small grains, and fruit trees. However, little is known about its efficacy and potential phytotoxicity on floriculture crops and how it compares to other commercially available PGR chemicals. The effects of two foliar spray applications (2 weeks apart) of ProCa (500, 1000, or 2000 ppm), paclobutrazol (30 ppm), or a tank mix of daminozide plus chlormequat (2500 and 1000 ppm, respectively) were quantified on Dianthus barbatus L. `Interspecific Dynasty Red', Ageratina altissima R. King & H. Robinson (Eupatorium rugosum) `Chocolate', Lilium longiflorum Thunb. `Fangio', and Buddleia davidii Franch. `Mixed.' All plants were forced in a glass-glazed greenhouse with a constant temperature setpoint of 20 °C under a 16-h photoperiod. Two weeks after the second spray application of ProCa at 500, 1000, or 2000 ppm, plant height of Dianthus and Lilium was shorter than control plants by 56%, 60%, and 65% and by 6%, 26%, and 28%, respectively. However, ProCa bleached and reduced the size of Dianthus flowers. ProCa at 2000 ppm and daminozide plus chlormequat were effective at controlling the height of Eupatorium (64% and 53% reduction, respectively); however, leaves of Eupatorium were discolored and showed symptoms of phytotoxicity 1 week after the first ProCa application. Only daminozide plus chlormequat were effective on Buddleia. ProCa is an effective PGR for most of the crops we tested; however, its discoloration of red flowers and foliage may limit its application for commercial use.

scholarly journals Suitability Of Sixteen Asparagus Cultivars For Growing In Polish Environmental Conditions

2014 ◽  
Vol 22 (2) ◽  
pp. 151-157 ◽  
Author(s):  
Mikołaj Knaflewski ◽  
Alina Kałużewicz ◽  
Wenjing Chen ◽  
Anna Zaworska ◽  
Włodzimierz Krzesiński
Keyword(s):  
Plant Growth ◽  
Correlation Coefficients ◽  
Growth Index ◽  
Vegetation Period ◽  
Regression Equations ◽  
Sectional Area ◽  
Cross Sectional ◽  
Total Cross Sectional Area ◽  
Two Parameters

AbstractGreen spear yield of 16 asparagus cultivars originating from six countries was assessed from 2011 to 2013. There were considerable differences in total, marketable and early yields between the cultivars. The quality of harvested spears also varied remarkably. On average, the highest mean total and marketable yields from 3 years of investigation came from Dutch cultivars ‘Gijnlim’ and ‘Cumulus’ and German cv. ‘Mondeo’. The lowest yields were found in New Zealand cultivars ‘Pacific Challenger’ and ‘Pacific 2000’. The greatest mean marketable spear weight was recorded for ‘Cumulus’, whereas the smallest spear weight was obtained from ‘Pacific 2000’, ‘H666’ and ‘NJ 953’. Cultivars ‘Gijnlim’, ‘Cumulus’ and ‘Mondeo’ produced the highest early yields, while ‘Pacific 2000’ and ‘Pacific Challenger’ produced the lowest. In order to determine the dependence between summer stalks size of tested cultivars in the preceding year and their yields in the following year, regression equations and their correlation coefficients were estimated. The size of summer stalks was expressed as plant growth index, which was the multiplication of height and total cross-sectional area of summer stalks. There was a significant and positive correlation between plant growth index of tested cultivars and their yields in the next vegetation period. The correlation coefficients between these two parameters amounted to 0.62 and 0.68 in 2011/2012 and 2012/2013, respectively

scholarly journals Method of Silicon Application Affects Quality of Strawberry Daughter Plants during Cutting Propagation in Hydroponic Substrate System

Agronomy ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1753
Author(s):  
Yali Li ◽  
Jie Xiao ◽  
Jiangtao Hu ◽  
Byoung Ryong Jeong
Keyword(s):  
Plant Growth ◽  
Foliar Spray ◽  
High Temperature Stress ◽  
Leaf Length ◽  
Guaiacol Peroxidase ◽  
Optimal Method ◽  
Cutting Propagation ◽  
Before And After ◽  
Soilless Cultivation

The beneficial effects that silicon (Si) has on plant growth as well as resistance to biotic and abiotic stresses have been well documented for many crops in recent years. However, few studies focus on the effects of Si on plant growth during the propagation stage of strawberry (Fragaria × ananassa, Duchesne). This study was conducted to investigate the optimal method for Si application during the cutting propagation of strawberry in soilless cultivation. Strawberry mother plants were supplied with Si through foliar spray, runner spray, or root drench before the cutting propagation, then half of the daughter plants in each treatment received continued Si supply through foliar spray or through root drench after the cutting propagation. The results showed that the plant height, petiole length and diameter, leaf length and width, shoot fresh and dry weights, and root fresh and dry weights were significantly increased by Si root drench both before and after the cutting propagation. Moreover, plants absorbed more Si by drench than by spray, and the absorbed Si was only able to be transported from the root to the shoot, and from the mother plant to the daughter plant. Further research found that the chlorophyll fluorescence parameter of the maximum quantum efficiency of the photosystem II (Fv/Fm) and the activities of superoxide dismutase, ascorbate peroxidase, and guaiacol peroxidase were also enhanced while catalase did not change under a high temperature stress in strawberry treated with Si before and after cutting propagation by root drench. Thus, Si application by drenching the roots during the whole propagation period is recommended to increase the quality of the strawberry daughter plants in soilless cultivation.

Sign in / Sign up

Export Citation Format

Share Document