Journal of Horticultural Sciences

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The present experiment was conducted at the Horticultural Instructional Farm, Department of Horticulture, J.A.U., Junagadh during the winter 2004-05. The experiment comprised of ten treatments, viz., three concentrations of GA3 (50, 150, 250 ppm) at three frequencies (single, double and triple spray at 30, 45 and 60 days from transplanting) and control. Each treatment was replicated thrice in randomized block design. Of the different treatments, GA3 250 ppm single spray recorded maximum plant height and plant spread. Number of branches per plant was highest under double spray of GA3 at 50 ppm. Longest flowering duration, maximum flower diameter and maximum shelf-life were observed with single spray of 250 ppm GA3. It also registered maximum number and weight of flowers per plant besides highest flower yield.

Keywords

Gaillardia, GA3, Growth, Flowering, Yield.
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