Sri Lanka was self-sufficient in rice as recently as a few years ago. Banning fertiliser cut yields by 35%. https://www.canr.msu.edu/prci/publications/Policy-R

Sri Lanka was self-sufficient in rice as recently as a few years ago. Banning fertiliser cut yields by 35%. https://www.canr.msu.edu/prci/publications/Policy-Research-Notes/PRCI_PRN_3.pdf https://www.canr.msu.edu/prci/publications/Policy-Research-N...