Effect of Bio Char and Amino Acid (Steam) on Growth and Green Yield of Onion (Allium cepa L.) Variety (Karbala)

Abstract

The experiment was carried out in the vegetable field of Horticulture and Landscape Department / College of Agriculture and Forestry / University of Mosul, during 2021-2022 season to investigate the effect of administration of bio char in three doses (0, 3.5, 7, 10.5 t. Ha-1) and three Concentrations of Amino acid(Steam)(0, 10, 15 ml.L-1)on growth and green yield of onion variety (Karbala) The experiment was designed according to randomized complete block design (RCBD) with three replications. The results showed that : Adding the bio char in doses of 7 t. Ha-1 to the soil significantly increased several growth and yield properties(bulbs number, leaves number, bulb diameter, fresh and dry weight of leaves and roots, plant yield, and biological yield). Spraying amino acid (Steam) at 15 ml.L-1 doses gave the highest values of plant height, fresh and dry weight of leaves and roots per plant, diameter of bulb neck. But highest values of average weight of bulb and biological yield was from spraying amino acid (Steam) at 10 ml.L-1 doses. The combination treatments between bio char and amino acid (Steam) show a significant effect in some vegetative growth and yield parameters of onion.

Effects of Biochar Type on the Growth and Harvest Index of Onion (Allium cepa L.)

“…As the literature reports, an application of biochar to salt-affected soils could increase solubilized inorganic forms, nutrient availability, and uptake which improve soil quality causing enhancement of soil physiochemical properties which reflect positively on the plant physiological and biochemical characteristics [4]. Other studies reported that applying biochar in 7 t ha −1 doses to the soil significantly increased several growth and yield parameters (bulb number, leaves number, bulb diameter, fresh and dry weight of leaves and roots, plant yield, and biological yield) according to experiments developed at the University of Mosul in Iraq [50]. In addition, spraying amino acid (Steam) gave the highest values of plant height, fresh and dry weight of leaves and roots per plant, and diameter of bulb neck [50].…”

“…Other studies reported that applying biochar in 7 t ha −1 doses to the soil significantly increased several growth and yield parameters (bulb number, leaves number, bulb diameter, fresh and dry weight of leaves and roots, plant yield, and biological yield) according to experiments developed at the University of Mosul in Iraq [50]. In addition, spraying amino acid (Steam) gave the highest values of plant height, fresh and dry weight of leaves and roots per plant, and diameter of bulb neck [50]. In an experiment developed in a silt loam soil in Thailand, rice husk and rice straw biochar application increased onion yields by 22% and 35%, respectively, compared with the current farmer practice of using raw rice husk [45].…”