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1

Adjuvant effects on plant growth regulators in winter wheat

100%
Stachecki S., Praczyk T., Adamczewski K.
Journal of Plant Protection Research
|
2004
|
tom 44
|
nr 4
The influence of adjuvants on the efficacy of the plant growth regulators: chlormequat chloride (CCC) and prohexadione-calcium was investigated in winter wheat in 2002 and 2003. Field trials were carried out in the Agricultural Experimental Farm in Winna Góra. The plant growth regulators were applied alone at normal rate and at a reduced rate with and without adjuvants. Two adjuvants were used: Adpros 85 SL, a methylated rapeseed oil and Break-Thru S-240, an organosilicone surfactant. Crop height, lodging, yield and quality of the harvested crop were assessed. Physicochemical properties of spray solution were measured. Adjuvants improved the biological activity of both, CCC and prohexadione-calcium, especially when reduced doses were applied. Efficacy of the plant growth regulators used at normal rate without adjuvant and at reduced rates with adjuvants was similar. Break-Thru S-240 increased the efficacy of CCC and prohexadione-calcium more compared to Adpros 85 SL measured in terms of reduction of plant height.
2
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Influence of prohexadione-calcium on vegetative growth and reproduction of ‘0900 Ziraat’ sweet cherry

84%
Aglar E.
Acta Scientiarum Polonorum. Hortorum Cultus
|
2018
|
tom 17
|
nr 4
Effects of prohexadione-calcium (ProCa, 125 and 250 mgL–1) and ProCa + ammonium sulfate (AMS, 500 mgL–1) treatments on vegetative characteristics (shoot growth, branch diameter, trunk cross-sectional area (TCSA), canopy volume, number of flower per cm2, number of fruits per cm2) and quality parameters (fruit size, flesh firmness, color, titratable acidity and soluble solids content (SSC)) of ‘0900 Ziraat’ sweet cherry were investigated in this study. Solutions were sprayed when the shoots were just 10 cm long in 2014 and 2015. As compared to control, in 2015, TCSA decreased only with ProCa treatments (125 and 250 mgL–1) and canopy volume and shoot length decreased with all treatments. On the other hand, number of flower and fruit per cm2 significantly increased with all treatments. While there were not significant differences in fruit size, flesh firmness, color, SSC and titratable acidity values were significantly lower in 250 mgL–1 ProCa and 250 mgL–1 ProCa + AMS treatments. It was concluded that ProCa treatments could be used as an efficient tool for suppression of shoot growth and to increase the number of flower and fruits per cm2 in ‘0900 Ziraat’ sweet cherry cultivar.
3

Growth, anatomy and chlorophyll fluorescence of coriander plants [Coriandrum sativum L.] treated with prohexadione-calcium and daminozide

84%
Kofidis G., Giannakoula A., Ilias I. F.
Acta Biologica Cracoviensia. Series Botanica
|
2008
|
tom 50
|
nr 2
55-62
This study evaluates the effects of the two gibberellin inhibitors (daminozide, prohexadione-calcium) on certain growth and anatomical characteristics of coriander (Coriandrum sativum L.). Both growth retardants were found effective in reducing stem elongation; that response varied with the concentration used. Prohexadione-Ca at 200 mg l-1 reduced height by 38%. Coriander fruits were heavier after the application of prohexadione-Ca, but this did not translate to increased fruit yield or fruit essential oil yield. Prohexadione-Ca induced precocious anthesis (3-5 days earlier). Both prohexadione-Ca and daminozide apparently affected leaf and stem anatomy. Generally, retardant-treated plants possessed thicker leaves, wider stems with more collenchyma tissue, and more vessels in the vascular bundles. Chlorophyll fluorescence measurements disclosed a decrease in the photochemical efficiency of PSII in retardant-treated plants as compared to the controls. The chlorophyll fluorescence parameters Fv/Fm and Fv/Fo can provide a tool for early diagnosis of the use of growth retardant even before any signs of growth retardation are visible in the plants.
4
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Content available

Direct and apparent residual effects of prohexadione – calcium applied to young cropping sweet cherry trees

84%
Jacyna T., Lipa T.
Acta Agrobotanica
|
2010
|
tom 63
|
nr 1
The same young cropping ‘Regina’ sweet cherry trees were foliar treated with prohexadione-calcium (Pro- Ca) in two consecutive years at a concentration of [ 125, 125 x 2, 250 ]-(A) and [ 250, 375, 500 ]-(B) mg ProCa l-1, respectively. The following year some trees from A-treatments were left untreated to observe carry-over effects (C). None of A-treatments influenced tree trunk, shoot extension and internode growth, whereas B-treatments reduced shoot extension and internode length, simultaneously increasing flower bud density, particularly by 500 mg ProCa l-1. There were no carry-over effects produced by C-trees, except some retardation in shoot extension. None of the treatments influenced the tree cropping level. Fruit diameter was reduced by A-treatments, but fruit shape (L/D ratio) and mass were reduced by treatments B, and such reduction was also exhibited by C-trees (residual effects).
5

Effects of different pH sprays on the efficiency of prohexadione-Ca in sweet cherry trees

67%
Jacyna T., Wojcik W., Lipa T.
Folia Horticulturae
|
2011
|
tom 23
|
nr 1
6

Wplyw lacznego stosowania jodosulfuronu metylowego i propoksykarbazonu sodowego z retardantami na wzrost i plonowanie pszenicy ozimej

43%
Miziniak W., Praczyk T.
Progress in Plant Protection
|
2006
|
tom 46
|
nr 2
295-299
7

Wplyw lacznego stosowania fenoksapropu-P-etylowego z retardantami na wzrost i plonowanie pszenicy ozimej oraz zwalczanie miotly zbozowej [Apera spica-venti]

43%
Miziniak W., Praczyk T.
Progress in Plant Protection
|
2007
|
tom 47
|
nr 3
210-215
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