On the Forgues Family Organic Dairy Farm, near Alburg Springs, Vermont during 2003-2005 we studied pasture forage yield and quality under Voisin management-intensive grazing with treatments of irrigation or nonirrigation, and eight levels of soil fertility treatments (0, PKlime, NPKlime, fish, fish/seaweed, crab shell, and two levels of dairy manure compost). Compost, nitrogen, and irrigation increased forage yield, with compost providing the most beneficial effects on yield and forage quality. This research was used as a focal point to attract graziers to two pasture walks per season, to learn about the research and basic and advanced aspects of management-intensive grazing. Graziers learned techniques that help them either to begin using or improve their use and profitability of management-intensive grazing.
The outreach objective/performance target was to have 30 experienced graziers adopt at least two of these new practices: a) pre- and post-grazing pasture dry matter estimating, b) feed planning, or c) phenological timing of N fertilization; and have 10 inexperienced graziers begin using management-intensive grazing.
The research objective was to determine N fertilizer and organic soil amendment effects on forage yield and quality of irrigated and nonirrigated pasture under Voisin management-intensive grazing.