Intervale describes organic rotation and city composting to reduce runoff into Lake Champlain

Tim Laird said the Intervale grows on about seven acres (about five actively cultivated, two in cover-crop rotation) and explained why rotation matters for organic systems: it adds organic matter, improves soil structure and interrupts pest and disease cycles.

"We're certified by the Natural Organic Farmers Association of Vermont, in Montpelier," Laird said, and described working with the Intervale Foundation and the city's leaf-waste compost project to obtain low-cost compost that rejuvenates depleted soils. He said the farm used the compost to increase organic matter and reduce reliance on external chemical inputs.

Laird also framed the environmental stakes: because the farm sits in a flood plain, reduced pesticide and fertilizer use helps prevent nutrients and chemicals washing into the Winooski River and ultimately Lake Champlain. "...the Lake Champlain right now is in big trouble, I think, because of all the pollutants," he said.

The segment included a technical observation from an intern about the time and resources needed to convert large conventional farms to organic methods: one farmer the speakers cited said conversion could take eight to ten years to re-establish beneficial insects and a balanced system.

Source and provenance: Interview with Tim Laird and interns for Focus at the Intervale Community Farm.