Role of bio health extract on wheat growth according to Zadoks decimal scale

Combating climate change and promoting sustainability are agricultural experts’ priorities in Iraq. Using environmentally friendly fertilizers on strategic crops is considered a milestone for accomplishing that. This study aimed to determine the effect of Bio Health fertilizer spraying on some growth qualities of two wheat cultivars (Triticum aestivum L.). A field experiment was conducted at the Agricultural Research Station, Faculty of Agricultural Engineering Sciences - University of Baghdad, during the winter season 2023-24. A randomized complete block design (RCBD) was used in a split-plot arrangement with three replicates, and the experiment included two factors, the first in the main plots such as two wheat cultivars (Ibaa 99 and Adina), while the second factor in the secondary plots was spraying with Bio Health at concentrations of 800, 1600 and 2400 mg/L, in addition to the control treatment (without spraying). The results showed the superiority of the Ibaa 99 cultivar in plant height, the area of the flag leaf, the number of total branches, chlorophyll content, dry weight of the flag leaf, dry weight of the plant, crop growth rate and biological quotient with an increase of 3.64, 15.77, 5.01, 3.38, 7.33, 3.31, 3.34 and 5.73%, respectively. The results also showed the superiority of spraying with Bio Health at a concentration of 1600 mg/L compared to the comparative treatment, the number of total branches, the dry weight of the plant, the growth rate of the crop and the biological yield, with an increase of 28.39, 48.88, 13.21, 12.10 and 23.19%. As for the study's two factors overlap, the results demonstrated a considerable superiority between the two qualities, the height of the plant as well as its dry weight, and the combination of Bio Health spraying at a concentration of 1600 mg/L for the Ibaa 99 cultivar achieved the highest averages.