Efficacy of Foliar Application of Micronutrients and BA Concentrations on Flowering and Vase Life of Zinnia Plant (Zinnia elegans)
DOI:
https://doi.org/10.53555/jaz.v46i1.5083Keywords:
Zinnia cultivar, Micronutrients, BA concentration and Foliar Application.Abstract
This study was carried out in the lath house of the Horticulture Department Nursery, College of Agriculture Engineering Sciences, Duhok University. Kurdistan region, Iraq, for the period from 5th 2024 to study the effect of different levels of Zn (0, 0.50 and 0.75) and different concentration of BA (0. 50, and 100) mgl-1 on some flowering and vase life of two cultivars of Zinnia plant. The results were as follows: The best results (fewest days) for the number of days from planting to bud emergence, and anthesis were obtained on Zinnia Lavanda (54.957 and 85.185) respectively. Also, these treatments were significantly superior in the other characteristics like flower stem length (cm), flower stem diameter (cm) and vase life (days) for Zinnia Lavanda cultivar reached (3.815 cm 8.169 cm 10.710 day) respectively. While the flower dry weight 1.429g and vase life 11.009 day was significantly increased when plant spraying with 0.75 % Zn compared with other treatments. The responses of the Zinnia plants to micro elements under study, significantly increased number of flowers per plant 4.389, flower stem diameter 0.437 cm, flower fresh weight 9.510 g and vase life 11.148 for the Zinnia Lavanda when spraying with 0.75% Zn compared to the control. While the maximum result about the flower stem length 87.310 cm, flower diameter 8.319 cm and flower dry weight 1.674 g for Zinnia rosso scarlatta when spraying with 0.75% Zn. Also, the best result of Zinnia Lavanda for number of flowers per plant, flower stem diameter, flower fresh weight and vase life (4.333, 0.405 cm, 10.462 g and 11.111 days) was obtained when the plant sprays with BA at (100 and 50) mgl-1 respectively compared with control and Zinnia rosso scarlatta. Maximum fresh flower weight (13.030 g) was recorded for plants grown in BA at 50 mgl-1+ 0.50% Zn treatment for the Zinnia Lavanda cultivar follow by 12.217g fresh flower weight for the same cultivar when spraying only 100 mgl-1 BA. Maximum dry flower weight (2.317 g) was recorded for Zinnia rosso scarlatta cultivar in control treatment. Maximum vase life (12.333 days) was recorded for Zinnia Lavanda cultivar in 0.75% Zn combined with 50 mgl-1 BA treatment.
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