Effects of phosphorus fertilizer and nano-magnesium spray on the vegetative and reproductive of Datura stramonium L.

Abstract

In 2021, a field experiment was conducted at the College of Agriculture, University of Kerbala, Kerbala, Iraq, to study the effect of phosphate fertilization1 and nano-magnesium spraying on Datura plants' vegetative and reproductive traits. The experiment was conducted with three replications according to randomized complete block design (RCBD) with two factors. The first factor included four levels of Phosphorus fertilizer: 0, 25, 50, and 75 kg P h-1. The second factor included spraying of nano-magnesium in four concentrations: 0 (distilled water only) and 60, 120, and 180 mg Mg L-1. The results showed that phosphorous caused a significant increase in the studied traits, as the treatment 50 kg P ha-1 gave the highest mean plant height, number of branches, number of leaves, leaf area, leaf yield, seed yield, alkaloids percentage in leaves and seeds, number of fruits and number of seeds, which amounted to 4953 cm and 27.62 plant-1, 124.49 leaves Plant-1, 1989.12 cm2, 501.36 kg ha-1, 501.49 kg ha-1, 13.16%, 13.18%, 26.02 fruit plant-1 and 228.14 seed plant-1, respectively. The treatment 180 kg Mg h-1 gave the highest average plant height, number of branches, number of leaves, leaf area, yield of leaves, yield of seeds, percentage of alkaloids in leaves and seeds, number of fruits and number of seeds reaching 58.27 cm And 21.90 branches Plant-1, 122.94 leaves Plant-1, 1996.62 cm2, 886.59 kg h-1, 486.17 kg h-1, 14.86%, 15.10%, 26.56 fruits plant-1, 24.63 seeds plant-1. Adding phosphorous and spraying nano-magnesium improves the vegetative and reproductive traits of the Datura plant. Keywords. Fertilization; Nano–Nutrients; Medicinal Plant; Yield; alkaloids.