Sana, et al (2024) Enhancing the Physiological and Biochemical Potential of Praecitrullus fistulosus L. through Synergistic Action of BiocharBiochar is a carbon-rich material created from biomass decomposition in low-oxygen conditions. It has important applications in environmental remediation, soil improvement, agriculture, carbon sequestration, energy storage, and sustainable materials, promoting efficiency and reducing waste in various contexts while addressing climate change challenges. More and Zinc Oxide Nanoparticles. Journal of Soil Science and Plant Nutrition. https://doi.org/10.1007/s42729-024-01894-8

In modern agriculture, biochar combined with nano-priming of seeds is proving to be a game-changer for soil fertility, germination rates, and seedling vigor. A pot experiment conducted in a completely randomized design (CRD) with factorial arrangement and triplicate replication explored these benefits. Biochar was mixed into the soil at concentrations of 0.1% and 0.2% for a week before seed sowing. Zinc oxide nanoparticles (ZnO NP) were used to nano-prime round gourd (tinda) seeds at concentrations of 20 mg, 40 mg, and 60 mg, which were then sown in the biochar-amended soil.

Results showed that the combination of 0.1% biochar and 60 mg ZnO NP (T3) produced the longest shoots, roots, and the highest shoot fresh weight compared to control and other treatments. Although photosynthetic pigments did not show significant increases, other physiological attributes improved markedly in treated plants. The highest levels of total soluble sugars and proline were found in the combination of 0.2% biochar and 20 mg ZnO NP (T4). Antioxidant enzyme catalase content was highest in the 0.1% biochar and 20 mg ZnO NP treatment (T1), followed by treatments with higher ZnO concentrations. The highest peroxidase and superoxide dismutase activities were observed in the combination of 0.2% biochar and 60 mg ZnO NP (T6).

These findings suggest that integrating biochar into soil and using green ZnO nanoparticles as seed priming agents can significantly enhance the growth and productivity of round gourd plants, offering a promising approach for sustainable agriculture.