What happens to soil nitrogen after fumigation?

Every year, the main research field at the Strawberry Center is divided in half: fumigated and non-fumigated. Within the first few months after transplanting, I always notice how vigorous the plants on the fumigated side are compared to the non-fumigated side. Could fumigation also be influencing nutrient availability, perhaps even creating a fertilizer effect?  In … Continue reading What happens to soil nitrogen after fumigation?