NAIROBI, May 29 (Xinhua) -- In western Kenya, maize farmer Josephat Ouma walked through rows of green, leafy stalks with a smartphone in hand. He paused and bent down before snapping a picture of a sickly-looking leaf.
"I used to wait for someone to come and help. Sometimes, they never came. Now, I take a photo, and the app tells me what is wrong," he told Xinhua in a recent interview.
