Forage productivity and profitability in newly-established open pasture, silvopasture, and thinned forest production systems

摘要

There is growing interest among farmers in the northeast US in silvopasture and other practices that would help them expand their agricultural land base in this forested region. Unfortunately, little quantitative data exist regarding forage performance and economic outcomes associated with different forest-to-agriculture conversion strategies, particularly for the northern tier of states. This research examined forage dry matter production and quality in six forage treatments (orchardgrass, bluegrass, brome, and perennial ryegrass bicultures with white clover; cut hay; and a control) in newly-established silvopastures and open pastures converted from an early successional northern hardwood forest in New York. In addition, we conducted a financial analysis of the establishment of both agricultural systems, as well as a thinned forest treatment managed solely for wood products. Total forage dry matter production (planted forages plus volunteer grasses) was greater in open pastures than silvopastures in the first year after establishment; however, no differences in total forage production were found between silvopastures and open pastures in June or August of the second year. Total forage dry matter production was greater in the orchardgrass-white clover biculture compared to the control treatment in both years. Orchardgrass percent crude protein was lower in open pastures (10.7%) compared to silvopastures (12.9%) in June of year two. The financial analysis indicated that silvopasture outperformed open pasture and thinned forest treatments in terms of both IRR and NPV. We conclude that forage production in silvopastures can be competitive with that in open pastures on sites with a similar, forested, starting condition.