Interaction between micro elements and macro elements with manure on barley feed yield and soil nutrient content in Sistan region. International Journal of Manures and Fertilizers, [S. l.], v. 3, n. 1, p. 572–575, 2014. Disponível em: https://www.ijpp.org/journal/index.php/ijmf/article/view/121. Acesso em: 5 apr. 2026.