Effect of foliar spraying with Alpha tocopherol and nano fertilizers calcium and boron on growth of two chili pepper hybrids

• Sroor Saeed Khamees Suhail Othman Khalid Alwan Mohamad

  Author

     A field experiment was carried out at research station, Horticulture and Landscape design Department, College of Agriculture, University of Diyala During the 2025-2026 growing season, a study was conducted on the effect of foliar spraying with alpha tocopherol, nano calcium and nano boron fertilizers on the growth and yield of two chili pepper hybrids. The split-plot system was used within the completely randomized block design, where the foliar spray treatments were placed in the main blocks and the hybrids in the subblocks to facilitate foliar spraying operations the following combinations were applied: (Control treatment), (alpha tocopherol at a concentration of 100 mg L^-1), (Nano calcium 500 mg L^-1), (Nano boron 250 mg L^-1), combination (alpha tocopherol 100 + Nano calcium 500 mg L^-1), combination (alpha tocopherol 100 + Nano boron 250 mg L^-1), and combination (alpha tocopherol 100 + Nano calcium 500 + Nano boron 250 mg L^-1).

The results showed that the treatment with the triple combination significantly and significantly improved the biochemical and vegetative growth characteristics, and gave the highest values ​​in chlorophyll content (29.67 mg/100 g^-1 fresh weight), plant height (127.4 cm), stem diameter (3.600 cm), number of main branches (4.567 branches per plant), and total number of leaves per plant (2401 leaves per plant) were all significant. Among hybrids, the hybrid (BARBARIAN F1) significantly outperformed in most traits no significant superiority was observed in the two characteristics of the number of branches and the total number of leaves of the plant.

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