I've been reading a lot about using corn gluten meal as a pre-emergent but I'm overwhelmed with the information. From what I understand it should be applied on bermudagrass in Alabama in early March? But what I'm not understanding is if that should be the only application or if you apply it throughout the season as well? Also, do you apply corn gluten meal in addition to regular organic or synthetic fertilizers throughout the season? Can anyone recommend where I could go to get corn gluten meal? Thanks!