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Specialist seed-feeders are widely used in weed biological control, but seed predation rates are frequently insufficient to cause the required impacts...
Read moreAmbrosia trifida L. (giant ragweed), an aggressive weed of US grain crops and indigenous to North America, colonizes no-tillage crop fields and undist...
Read moreRecent changes in land use have resulted in dramatic habitat loss for numerous species. More than 99% of the habitat for Fender's blue butterfly Icari...
Read moreExtracts and leachates of the grass Aristida adscensionis inhibited the growth of Rhizobium in sterile culture. The results confirm previous studies o...
Read moreThe published results of the Park Grass Experiment (PGE), at Rothamsted, UK begun in 1856, provide up to 30 yr of annual data which may be used to det...
Read moreSeeds of Poa annua, P. trivialis and Festuca rubra were sown into gaps within established Lolium perenne swards, planted in systematic pattern to give...
Read morePhleum pratense cv. Vanadis, Saga and Alma were grown with Trifolium pratense in an outdoor pot experiment in replacement series with or without the a...
Read moreThe numbers of Sinapis arvensis plants in 3 permanent quadrats in an arable field were examined over 3 years. Plant size was positively correlated wit...
Read moreSexual reproduction in 9 clones of Eichhornia crassipes from different parts of the world was examined in the glasshouse. Eight of the clones flowered...
Read moreSexual reproduction and natural seed production in Eichhornia crassipes was examined in a total of 19 populations from 2 tropical regions (Lower Amazo...
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