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What if the agricultural revolution has already happened and we didn’t realize it? Essentially, that’s the idea in this report from theGuardian about a group of poverty-stricken Indian rice and potato farmers who harvested confirmed world-record yields of rice and potatoes. Best of all: They did it completely sans-GMOs or even chemicals of any kind.

[Sumant] Kumar, a shy young farmer in Nalanda district of India’s poorest state Bihar, had — using only farmyard manure and without any herbicides — grown an astonishing 22.4 tonnes of rice on one hectare [~2.5 acres] of land. This was a world record and with rice the staple food of more than half the world’s population of seven billion, big news.

It beat not just the 19.4 tonnes achieved by the “father of rice”, the Chinese agricultural scientist Yuan Longping, but the World Bank-funded scientists at the International Rice Research Institute in the Philippines, and anything achieved by the biggest European and American seed and GM companies. And it was not just Sumant Kumar. Krishna, Nitish, Sanjay and Bijay, his friends and rivals in Darveshpura, all recorded over 17 tonnes, and many others in the villages around claimed to have more than doubled their usual yields.

Another Bihar farmer broke India’s wheat-growing record the same year. They accomplished all this without GMOs or advanced seed hybrids, artificial fertilizer or herbicide. Instead, they used a technique called System of Rice [or root] Intensification (SRI). It’s a technique developed in Madagascar in the 1980s by a French Jesuit and then identified and promulgated by Cornell political scientist and international development specialist Norman Uphoff.

SRI for rice involves starting with fewer, more widely spaced plants; using less water; actively aerating the soil; and applying lots of organic fertilizer. According to Uphoff’s SRI Institute website [PDF], the farmers who use synthetic fertilizer with the technique get lower yields than those who farm organically. How’s that for pleasant irony?