Monday, 7 November 2005
2

Effects of Annual Forage Crops and Growth Stages on Dry Matter Yield and Silage Quality in the Upper Peninsula of Michigan.

Doo-Hong Min, Christian Kapp, and Richard Leep. Michigan State University, Upper Peninsula Experiment Station, E3774 University Drive, Chatham, MI 49816-0168

Effects of Annual Forage Crops and Growth Stages on Dry Matter Yield and Silage Quality in the Upper Peninsula of Michigan

By assessing the suitable annual forage crops in different regions of the Upper Peninsula of Michigan, dairy and livestock producers will be able to save their feed cost and make the farming system more sustainable and profitable. A field study was conducted at the MSU Upper Peninsula Experiment Station in Chatham in 2004 to evaluate the annual forage crops as either pasture or silage crop for dairy/livestock. Annual forage crops used for this trial were; 1) forage oats, 2) peas + oats, 3) peas + triticale, and 4) spring triticale and all annual forage crops were harvested at the four different stages of maturity (i.e., boot, head, milk, and dough). There were significant yield differences in species, cutting, and species by cuttings interaction based on statistical analysis. On average over the cuttings, forage oats had significantly higher yield than peas + oats and peas + triticale. In terms of cutting, as the stage of maturity proceeded, the forage yield increased ranging from 4.08 to 9.32 dry matter Mg/ha over the annual forage species. In both boot and heading stages, forage oats and peas + oats had significantly higher forage yield than peas + triticale and spring triticale. At the milk stage, spring triticale had significantly higher forage yield than other species. In contrast to other stages, there was no yield difference in dough stage across the species. In general, forage quality (i.e., crude protein, acid detergent fiber, neutral detergent fiber, neutral detergent fiber digestibility, in vitro dry matter digestibility, and lactic acid) decreased as the stage of maturity proceeded within each annual forage crops.


Handout (.pdf format, 1124.0 kb)

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