1 We established monocultures and 16 unique mixed communities of 12 native grasses, legumes and non-N 2 -fixing forbs. We identified species having a greater or lesser yield in the mixed communities than expected from monoculture data as winners and losers, respectively. To test our hypothesis that performance of the subordinate species (losers) is mainly controlled by light availability, where...

The main purpose of this study was to identify species of Parastagonospora in association with poaceous plants in Iran. Some species of Parastagonospora like P. nodorum causes a major loss to wheat production in the world. In the present research, two species including P. nodorum,and P. avenae were identified from different poaceous species. Parastagonospora nodorum was identifiedonPhalaris aru...

A new species, Dictyna palmgrenisp. n., is described from Finland and Russia on the basis of both sexes. Most of the earlier records of Dictyna schmidti Kulczyński, 1926 from the northern Palaearctic refer to this new species. Dictyna shilenkovi Danilov, 2000, syn. n. from Cisbaikalia is synonymised with Dictyna schmidti. The general appearances and copulatory organs of Dictyna palmgrenisp. n.,...

More than 50% of agricultural land is threatened by water erosion in the Czech Republic. With respect to soil erosion, maize (Zea mays L.) belongs most problematic crops; one possibilities increase protection against intercropping. In this study, we attempted find out effects individual intercrops and their mixtures (sown 4–6 weeks after sowing maize) or a mixed culture (maize plus lupine) on l...

1. We demonstrate the potential of extracting high-resolution dietary information from stable carbon isotopes ( δ 13 C) in horse tail-hair, in response to short-term changes in diet in controlled feeding experiments. 2. Tail hairs were sampled from six horses that had been equilibrated to C3 forage and were then subjected to a series of short-term diet switches to the C4 Coastal Bermuda Grass (...