Physiological roles of nano fertilizer and thiamine (B1) on some growth and flowering of Petunia plant (Petunia hybrida L.)

Abstract

The study was carried out at the Lath house located in the Department of Horticulture and Landscape Design, University of Kirkuk, Agricultural Research and Experiments Station, Al-Sayada. To assess the impact of two parameters, namely the foliar application of Nano fertilizer with varying concentrations of macro and micro components (0, 1.5, and 3) g, the study was conducted from October 23, 2022, to June 4, 2023. The doses of L-1 and thiamine are 0 mg, 150 mg, and 300 mg. The experiment on growth and flowering attributes was planned using a randomized complete block design (RCBD). The findings were analyzed using the statistical tool SAS (2005). The Dunkin' test was conducted at a significance level of 0.05. The findings revealed that the application of Nano fertilizer, at a concentration of 3 g. L-1 , resulted in an increase in plant height by 18.6 cm. Conversely, the use of thiamine led to a significant reduction in plant height when the concentration was increased to 300 mg. The length of L-1 is 14.16 cm. The study revealed that the combination between Nano fertilizer, which contains both macro and micro components, and thiamine had a notable impact at a concentration of 3 g. Concentrations of L-1 thiamine at 0.0 and 300 mg L-1 resulted in significant increases in plant height (24.3 cm) and leaf area (1459 cm2 ), respectively. Additionally, the plants exhibited an early blooming date at a dosage of 1.5 g. The treatment with L-1 and 300 mg L-1 (27.67) resulted in a delay in blooming date (56.67) compared to the plant control.