Paclobutrazol, Uniconazole, or Flurprimidol Applied at Various Concentrations as a Substrate Drench or Through Subirrigation Have Little Effect on Bee Balm Growth

Pepin, R.; Cole, Janet C.

doi:10.21273/horttech.24.3.313

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…Method of application has been shown to have an effect in other species, although results seem to be very species dependent. Application of paclobutrazol to bee balm (Monarda didyma L.) by drench reduced growth in height at an increasing rate with higher concentrations while subirrigation treatment did not (Pepin and Cole, 2014). In contrast, paclobutrazol treatment by spray increased height in Oriental lily hybrids more than treatment by drench relative to the control treatment (Puja et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

Spray and Drench Treatments of Paclobutrazol Influence Growth of Dissotis and Tibouchina

Hawkins¹,

Ruter

Robacker

2015

horts

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Dissotis rotundifolia (Sm.) Triana and Tibouchina fothergillae ×pilosa are members of the Melastomataceae family with high ornamental potential. The growth habits of these species are not ideal for nursery production or shipping. D. rotundifolia grows rapidly and needs frequent pruning. T. fothergillae ×pilosa has an open growth habit and could benefit from a more compact form. The effect of the plant growth regulator (PGR) paclobutrazol on D. rotundifolia and T. fothergillae ×pilosa was assessed to determine whether it could produce plants with a more compact growth habit. Paclobutrazol was applied as a drench and a spray. Drench application was more effective in reducing the growth of both species. Spray application was effective in reducing the growth of D. rotundifolia but was not effective on T. fothergillae ×pilosa. Neither drench nor spray application delayed or reduced flowering in D. rotundifolia. T. fothergillae ×pilosa did not flower during the study. For both D. rotundifolia and T. fothergillae ×pilosa, neither drench nor spray application had an effect on root dry weight. Low-to-medium dosages were effective at controlling plant growth in D. rotundifolia and T. fothergillae ×pilosa without adverse effects on plants. Drench treatments have more persistent effects on plant growth than spray treatments.

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Section: Discussionmentioning

confidence: 99%

Spray and Drench Treatments of Paclobutrazol Influence Growth of Dissotis and Tibouchina

Hawkins¹,

Ruter

Robacker

2015

horts

View full text Add to dashboard Cite

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“…However, trials must be conducted to determine appropriate rates for each specific condition (Schnelle and Barrett, 2009). Effects of PGRs on plant growth can be affected by environmental conditions, as well as by the rate (Cochran and Fulcher, 2013), timing (Banko and Landon, 2005;Starman, 1993), and method of application (Pepin and Cole, 2014).…”

Section: Discussionmentioning

confidence: 99%

Effect of Uniconazole on the Control of Plant Height and Fruit Yield of Potted Tomato, Pepper, and Eggplant

Villavicencio

Bethke²,

Corkidi³

2015

hortte

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Two experiments were conducted to evaluate the effect of the plant regulator uniconazole on plant height, flowering, and fruit yield of vegetable transplants. In the first experiment, seedlings of tomato (Solanum lycopersicum ‘Early Girl’), pepper (Capsicum annuum ‘Jalapeno’), and eggplant (Solanum melongena ‘Millionaire’), were sprayed with water (untreated control) or with 2.5, 5, and 10 mg·L−1 of uniconazole. Five weeks after treatment (WAT), application of 2.5 mg·L−1 of uniconazole reduced the height of tomato by 17%, and of 5 and 10 mg·L−1, by 25%. The effect of 10 mg·L−1 of uniconazole on tomato plant height persisted until 13 WAT, but did not affect fruit yield. ‘Early Girl’ tomato plants treated with 10 mg·L−1 of uniconazole were still shorter than the untreated control at this time, but there were no significant differences in the number or weight of the fruit produced by the plants treated with 10 mg·L−1 of uniconazole, and the untreated controls. In contrast, as the rate of uniconazole increased, the height of ‘Jalapeno’ pepper and ‘Millionaire’ eggplant decreased. Application of uniconazole had no effect on the number of fruit produced by ‘Millionaire’ eggplant. However, treatment with 10 mg·L−1 of uniconazole reduced the number of fruit produced by pepper plants by 50%, and reduced the total weight of fruit produced by pepper and eggplant plants by 30% and 50%, respectively, compared with the untreated control. The second experiment analyzed the effects of 5, 8, and 10 mg·L−1 of uniconazole on two cultivars of tomato with different growth habit, Early Girl (determinate) and Sun Sugar (indeterminate). Application of all rates of uniconazole decreased plant height but not the final fruit yield of the two tomato cultivars.

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Paclobutrazol, Uniconazole, or Flurprimidol Applied at Various Concentrations as a Substrate Drench or Through Subirrigation Have Little Effect on Bee Balm Growth

Cited by 2 publications

References 5 publications

Spray and Drench Treatments of Paclobutrazol Influence Growth of Dissotis and Tibouchina

Spray and Drench Treatments of Paclobutrazol Influence Growth of Dissotis and Tibouchina

Effect of Uniconazole on the Control of Plant Height and Fruit Yield of Potted Tomato, Pepper, and Eggplant

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