Effect of adding different levels of biochar and cow manure on some yield characteristics of soybean (Glycine max L.) and some physical properties of the soil. bioscnc [Internet]. 2024 Aug. 5 [cited 2026 May 10];46(3):299-30. Available from: https://journal.latakia-univ.edu.sy/index.php/bioscnc/article/view/17559