Dear Sendhil,

Good question. Via (@ActorAtlas) I posted the question on Twitter with tags #isic0112 , #isic0112IN , #IRRI

Let's hope we get an answer soon. Follow the discussion  via de link below.

ps. IRRI has twitter account @RiceResearch

http://www.actor-atlas.info/csm:0112

Thanks Sir for the info. I will follow the discussion.

How about this paper?

Rice yields and yield gaps in Southeast Asia: Past trends and future outlook

Thanks Sir for the information