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This is one of the oddest things in agriculture I have seen in a long time: planting rice seed from an airplane.  The pilots fly low over flooded rice paddies in California and drop the seed dive-bomber style into the wet soil. 

Of course the folks here in Arkansas think that's just nuts. It seems pretty doubtful that aerial planting makes much sense from an economic or environmental perspective; the article cites time and weed control as major factors in the decision to plant from airplanes.