Ahmed Yaseen, Mahmoud Alnuimi, and Zabar Al-Dulaimy Ahmed Fatkhan. “Response of Fig Seedlings Cv. Aswad Diyala to Biochar Application and Tryptophan Foliar Spray ”. 2025. Plant Science Today, vol. 12, no. 2, June 2025, doi:10.14719/pst.7632.