Thank you very much for your advice! I really appreciate that. I also noticed that ecoinvent data is free for educational users from non OECD countries such as myself.
I sent necessary documents to openLCA and applied for the ecoinvent database few days ago. I should be able to import their database very soon. As you mentioned it was indeed becoming difficult to enter background data for my LCA on rice.
If all goes to plan, this case study will one day be my first publication. Thank you for wishing me luck!