|Authors: ||J. Drobna, V. Ptácek|
|Keywords: ||forage legumes, multiplication, pollination, Bombus terrestris|
Data on efforts to increase seeds of various forage legumes grown in technical isolation or in combinations using Bombus terrestris colonies for pollination are presented in this paper.
In 1997, some varieties of Trifolium repens were multiplied in isolation.
Plants grown outside of enclosures yielded 70% more seed.
In 1998 two species, Medicago sativa L. and Trifolium pratense L., were placed in one enclosure.
Average yield per plant was higher for lucerne compared to red clover.
Combinations of several Medicago (Medicago romanica, M. polychroa, M. falcata, and M. sativa) and Trifolium (Trifolium rubens, T. ambiguum, T. hybridum, T. repens, and T. pratense) species grown in one enclosure were also tested in 1999. In two cages a third component, Lotus corniculatus, was placed.
Higher average seed yields per plants were obtained in Medicago compared to the Trifolium species; however, L. cornitulatus produced the most satisfactory results in isolators.
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