Effect of alar on zinnia (Zinnia elegans I.).
1988
Salem M.A. | El Tantawy A. | Selim S.M.
This work carried out at the Experimental Area, Faculty of Agriculture, Cairo University, in the two successive seasons 1985 and 1986. The objective of the study was to investigate the response of Zinnia elegans plants to different rates of Alar (0, 3000, 4000 ana 5000 and 5000 ppm) and the effect of alternating the rates on growth, flowering and sugars concentrations of Z. elegans. The following results were obtained:- Spraying the plants with Alar at the rates of 3000, 4000 and 5000 ppm reduced the plant height and total fresh and dry weight of the plant. The treatments tended to increase the number of flowers/ plant in the first season. Meanwhile, the lowest rate (3000 ppm) silightly increased the diameter of flowers. Number of nodes and the diameter of stem were not significantly afftected by the treatments. -Soluble, non-soluble and total sugars were-in-general- increased especially with the high levels of Alar. -The sequence of Alar concentration significantly reduced both plant height and its total fresh and dry weight, as well as slightly reduced the number of nodes/ plant in the first season. Whereas, these treatments increased the number of flowers/ plant. The alternation of Alar beginning with 4000 or 5000 ppm tended to increase soluble sugar contents in the plant.
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