After more than 9,000 years in cultivation, annual paddy rice is now available as a long-lived perennial.
After more than 9,000 years in cultivation, annual paddy rice is now available as a long-lived perennial. The advancement means farmers can plant just once and reap up to eight harvests without sacrificing yield, an important step change relative to “ratooning,” or cutting back annual rice to obtain second, weaker harvest.
A new report in Nature Sustainability chronicles agronomic, economic, and environmental outcomes of perennial rice cultivation across China’s Yunnan Province. Already, the retooled crop is changing the lives of more than 55,752 smallholder farmers in southern China and Uganda.
“Farmers are adopting the new perennial rice because it's economically advantageous for them to do so. Farmers in China, like everywhere else, are getting older. Everyone's going to the cities; young people are moving away. Planting rice is very labor intensive and costs a lot of money. By not having to plant twice a year, they save a lot of labor and time,” says Erik Sacks, professor in the Department of Crop Sciences at the University of Illinois and co-author on the report.
Read more at: NASA Earth Observatory
The development of high-yielding perennial rice means up to eight harvests from a single planting, significantly lowering labor and cost for smallholder farmers while simultaneously improving soil quality. Researchers from the University of Illinois, Yunnan Academy of Agricultural Sciences, the International Rice Research Institute, Yunnan University, the University of Queensland, and the Land Institute contributed to the development and deployment of perennial rice. (Photo Credit: Shilai Zhang, Yunnan University)
