Scientists analyzed stone tools to find out more about the early days of rice gathering.
Schematic representation of rice harvesting methods using a finger-knife and sickle. CREDIT: Jiajing Wang.located at the top of the rice plant are reaped. The stone flakes from the early phase showed that this method was the primary way to harvest the rice. The tools used here had grooves that were mainly perpendicular or diagonal to the edge of the stone flake.
“A rice plant contains numerous panicles that mature at different times, so the finger-knife harvesting technique is especially useful when rice domestication was in the early stage,”Sickle harvesting uses the lower part of the plant. The stone flakes from the later phase had more evidence of this method. The tools from this era had grooves that were predominantly parallel to the tool’s edge, which means that slicing motion had likely been used.
“Sickle harvesting was more widely used when rice became more domesticated, and more ripe seeds stayed on the plant,”. “Since you are harvesting the entire plant at the same time, the rice leaves and stems could also be used for fuel, building materials, and other purposes, making this a much more effective harvesting method. Both harvesting methods would have reduced seed shattering. That’s why we think rice domestication was driven by human unconscious selection.
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