Effect of Bio and Organic Fertilization on the Growth and Yield of Brassica oleracea var. Botrytis Romanesco

The objective of this study was to determine the effectiveness of different organic fertilization treatments during the agricultural season of 2023–2024 in the province of Babylon. Furthermore, it is essential for Brassica oleracea var. Botrytis Romanesco development and production. Experiments were conducted with three replicates using a randomized complete block design (RCBD). Biofertilization (control) and organic fertilizing agents (vermicompost fertilizer, poultry waste fertilizer, and BioHealth fertilizer) are the primary determinants. The following constitutes the outcomes of the research: Biofertilization with the Novatec 21 fertilizer treatment enhanced the majority of the evaluated indicators significantly more than that with the BioHealth fertilizer treatment. These variables comprised analysis of the plant’s stature, leaf area, dry matter proportion, chlorophyll content, nitrogen, phosphorus, and potassium contents, weight of the flower crown, and overall yield. In contrast to the poultry waste treatment, vermicompost organic fertilization exhibited a substantial enhancement in the majority of the assessed parameters. The aforementioned parameters comprised analysis of the plant’s stature, leaf area, dry matter proportion, chlorophyll content, nitrogen, phosphorus, and potassium contents, weight of the flower crown, and the total yield.