Hawar Halshoy; Ayub Mahmood; Ghwncha Tofiq
Volume 23, Issue 1 , March 2023, , Pages 130-140
Abstract
By offering biostimulants as substitutes for conventional chemical fertilization, increasing consumer awareness has helped to raise issues related to food safety and the environment. Creating a suitable plan for the deployment of conventional chemical fertilization alternatives in agriculture. So, this ...
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By offering biostimulants as substitutes for conventional chemical fertilization, increasing consumer awareness has helped to raise issues related to food safety and the environment. Creating a suitable plan for the deployment of conventional chemical fertilization alternatives in agriculture. So, this investigation was conducted at the College of Agricultural Engineering Sciences, University of Sulaimani, Kurdistan Region-Iraq to study the effect of two plant biostimulants, algae extract (Algaton-20) and plant bio-cozyme, on broccoli which was under greenhouse conditions. After two weeks from transplanting the biostimulants were applied through soil at different concentrations (0 ml.L-1, 1ml.L-1 and 2 ml.L-1). The experiment was laid out according to Randomized Complete Block Design (RCBD) with three replications. The results revealed that algae extract and bio-cozyme at 2 ml.L-1 gave the maximum number lateral head, lateral head weight, plant yield, total marketable yield, phosphorus and iron. The interaction effect of algae extracts and bio-cozyme showed that number of leaves per plant and head diameter at 1 ml.L-1 algae extract and bio-cozyme, percentage of dry matter at 1 ml.L-1 algae extract without bio-cozyme, content of chlorophyll in leaves and number lateral head at 1 ml.L-1 algae extract and 2 ml.L-1 bio-cozyme, and head diameter at 1 ml.L-1 of both algae extract and bio-cozyme were the best. Also, main head weight, lateral head weight, plant yield, total marketable yield and iron (674.46 g, 208.58 g, 883.04 g, 42.05 ton.ha-1, 5.36 ppm, respectively) were the highest at 2 ml.L-1 combination of the two biostimulants. Moreover, nitrate and potassium (134.67 ppm, 336.13 ppm, respectively) were maximum at 2 ml.L-1 algae extract and 1 ml.L-1 bio-cozyme. Individually, 2 ml.L-1 of the two biostimulants were the best concentrations, but there was no a big difference between 1 and 2 ml.L-1 of the two biostimulants when they interacted together in most study measurements.
