Abstract
During the 2010-2012 period in RIMSA, Troyan (Bulgaria) the comparative testing of two drought tolerant perennial grasses (switchgrass, indiangrass) with traditional grasses (orchard grass, smooth bromegrass, perennial ryegrass, tall fescue) was performed. It was found that the best adaptability had the switchgrass. In the double regime of harvesting it was obtained 1.96 t ha-1 green mass and 0.70 t ha-1 dry matter, which exceeded the standard (orchard grass) by 28.95% and 52.17%, respectively. All tested perennial grasses predominated over the weed plants and weed infestation increased from I to II haymaking.
Highlights
In the last 10-20 years has increasingly seen the adverse effects of global warming on plant species
In a changing of climate some researchers focus to examination of perennial grasses such as ensuring the receipt of sustainable and environmentallyfriendly forage production
The experiment was carried out on an area situated at 385 m above sea level in the experimental field of RIMSA, Troyan (Central Northern Bulgaria) during the 2010-2012 period
Summary
In the last 10-20 years has increasingly seen the adverse effects of global warming on plant species. This suggests the timely establishment of herbage fodder species suitable for growing under dry conditions (Wilkins and Vidrich, 2000). The testing of different meadow species (grasses and legumes) is very important for the animal feeding in the dry summer period of the year – from June to August (Walton, 1983; Frame, 1986; Posler et al, 1993; Lodge, 1994; Gordon and Newmann, 1997; Frame et al, 1998; Paul et al, 2002). It can grow in different weather conditions and soil types. That perennial grass has an ornamental importance (USDA NRCS, 1991; Vogel et al, 2002; Barnes et al, 2003; USDA NRCS, 2007; USDA NRCS, 2009)
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