President Obama’s trip to Cuba this week accelerated the warming of U.S.-Cuban relations. Many people in both countries believe that normalizing relations will spur investment that can help Cuba develop its economy and improve life for its citizens.

But in agriculture, U.S. investment could cause harm instead.

For the past 35 years I have studied agroecology in most countries in Central and South America. Agroecology is an approach to farming that developed in the late 1970s in Latin America as a reaction against the top-down, technology-intensive and environmentally destructive strategy that characterizes modern industrial agriculture. It encourages local production by small-scale farmers, using sustainable strategies and combining Western knowledge with traditional expertise.

Cuba took this approach out of necessity when its economic partner, the Soviet bloc, dissolved in the early 1990s. As a result, Cuban farming has become a leading example of ecological agriculture.

But if relations with U.S. agribusiness companies are not managed carefully, Cuba could revert to an industrial approach that relies on mechanization, transgenic crops and agrochemicals, rolling back the revolutionary gains that its campesinos have achieved.