Abstract
The present investigation was conducted in the Research Field, Department of Horticulture, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, from November 2021 to March 2022 to study the effect of plant growth retardants on the growth and flowering of dahlia (Dahlia variabilis L.) cv. Edinburgh. The seedlings were planted at a spacing of 50cm x 50cm from row to row and plant to plant to accommodate nine plants per 3- meter square area. The experiment's design used a Randomized Block Design with thirteen treatments that were duplicated three times. The plants were watered immediately after planting and at weekly intervals during the growing period. Based on the present investigation, the treatment T12 maleic hydrazide@1200ppm was found best in terms of plant growth parameters, flower, and yield of Dahlia. In terms of economics, the maximum Cost Benefit ratio (1: 2.62) was also found in treatment T12 maleic hydrazide@1200ppm, whereas the minimum Cost benefit ratio (1:1.33) was recorded in treatment T0 (Control).
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