Spray application factors and plant growth regulator performance

IV. Dose response relationships

authored by
Moritz Knoche, Norman K. Lownds, Martin J. Bukovac
Abstract

Effect of carrier volume (range 119 to 668 L · ha-1) on dose response relationships of daminozide and GA3 was investigated using bean (Phaseolus vulgaris L.) seedlings as a model system. Carrier volume was varied by altering nozzle travel speed thereby maintaining constant flow rate and droplet size. Response was indexed by inhibition (daminozide) or stimulation (GA3) of elongation of first plus second internodes above primary leaves 14 days after spray application. Increasing dose by increasing concentration and/or increasing carrier volume at constant concentration increased response. For a given dose retained, response to daminozide was related positively to carrier volume, while GA3 response was not affected. Chemical names used: butanedioic acid mono(2,2-dimethylhydrazide) (daminozide); gibberellic acid (GA3).

External Organisation(s)
Wageningen University and Research
Martin Luther University Halle-Wittenberg
Michigan State University (MSU)
Type
Article
Journal
Journal of the American Society for Horticultural Science
Volume
125
Pages
195-199
No. of pages
5
ISSN
0003-1062
Publication date
03.2000
Publication status
Published
Peer reviewed
Yes
ASJC Scopus subject areas
Genetics, Horticulture
Electronic version(s)
https://doi.org/10.21273/jashs.125.2.195 (Access: Open)