The Impact of Spraying Marine Algae Extract, Arginine, and Brassinolide on Vegetative Growth Traits of Albion Strawberry Saplings

Abstract

Abstract The study was done in two plastic greenhouses. The first location was the University of Anbar College of Agriculture research station. The second site was in Dolab village during the 2022-2023 growing season to study the effects of spraying Albion strawberry seedlings with marine algae extract, amino acid (arginine), and growth regulator (Brassinolide) in protected environments. The experiment looked at three things: spraying with marine algae extract at 2 and 4 ml L-1, the amino acid “arginine” at 100 and 200 mg L-1, and the growth regulator “Brassinolide” at 0.05 and 0.10 mg L-1, as well as just spraying with distilled water. A randomized full-block design was used for a three-factor factorial experiment. The experiment has 27 treatments in three blocks, with five plants per unit. The experiment utilized 405 plants per location. The means were compared using the least significant difference (LSD) test at 5% significance. The data was examined using Genstat. All growth characteristics were significantly affected by seaweed extract spraying. The characteristics (number of leaves, leaf area, crowns, dry weight of the vegetative system, leaf chlorophyll, and carbohydrate content) performed best at 4 ml/L. The results were 69.0 and 72.0 leaves plant-1, 59.16 and 56.79 cm2 plant-1, 7.02 and 6.64 crowns plant-1, 32.40 and 24.96 g, 13.15 and 12.67 g, 11.13 mg g-1, 13.82 and 12.83%). However, spraying with arginine affected all sapling development parameters. With the 200 mg L-1 treatment, the study sites had the most leaves, the most leaf area, the most crowns, and the most vegetative dry weight (68.1 and 70.7 leaves per plant, 59.39 and 57.61 cm2 per plant, 6.67 and 6.25 crowns per plant, 32.21 and 24.72 g). The best leaf chlorophyll and carbohydrate values were obtained with 100 mg L-1 arginine. The results for both research locations were 11.68 and 10.69 mg g-1, 13.91 and 12.53%). Spraying Brassinolide at 0.10 mg L-1 produced the greatest results for leaf number, leaf area, crowns, vegetative dry weight, leaf chlorophyll, and glucose content. The first and second sites had (68.1 and 70.7 leaves plant-1, 58.95 and 56.23 cm2 plant-1, 6.62 and 6.27 crowns plant-1, 31.20 and 24.20 g, 11.87 and 10.71 mg g-1, 13.30 and 12.10%).