... When the Soviet Union collapsed in 1991, Cuba was stuck with an agricultural system dependent on agrochemicals it could no longer get and an environment damaged by their heavy use.
Rios, then a doctoral student in agricultural sciences, began to see positive results as farmers, out of necessity, turned to traditional ways. In the late 1990s he launched a program to encourage their broader use.
His biggest emphasis, he told Reuters in a recent interview, was to simply give farmers more seed choices and to let them, not distant bureaucrats and scientists, decide which ones to use.
He began organizing "seed fairs" in farming communities where farmers could choose from a broad selection of seeds. They were encouraged to share information on the results so that each farm became a micro-experimental station.
The key was that farmers chose seeds suited to their specific conditions, he said, instead of everyone getting the same ones.
In different regions of the island, "the criteria for seed selection are completely different," Rios said.
He said yields began doubling and tripling, and soil damaged by years of overuse and chemicals began to recuperate as crops were rotated and agrochemicals abandoned.
"When you use a diversified system, over the years it increases the amount of protein per area, the amount of vitamins per area, it diminishes the amount of work per area and above all, it increases the smiles of the people," he said.
He says 50,000 farmers are involved in his Program for Local Agricultural Innovation, which is backed by the National Institute of Agricultural Sciences, but much work remains.
Most land and agriculture is under state control in Cuba, but the island has 250,000 small farmers and 1,100 private cooperatives who, together, produce 70 percent of agricultural output on less than a third of the available land.
Cuba is dependent on imports for most of its basic foods, which drains its fragile economy and has forced President Raul Castro to put more land in private hands and -- as Rios advocates -- decentralize decision-making to local levels.
/...
http://www.scientificamerican.com/article.cfm?id=cuban-scientist-wins-us-b