| phytotoxic effects of (+/-)-catechin in vitro, in soil, and in the field. | exploring the residence time of allelochemicals released by plants into different soils, episodic exposure of plants to allelochemicals, and the effects of allelochemicals in the field has the potential to improve our understanding of interactions among plants. | 2008 | 18648546 |
| fungal endophyte increases the allelopathic effects of an invasive forb. | endophytic plant symbionts can have powerful effects on the way their hosts interact with pathogens, competitors, and consumers. the presence of endophytes in plants can alter food webs, community composition and ecosystem processes, suggesting that endophyte-plant symbioses may represent unique forms of extended phenotypes. we tested the impact of the fungal endophyte alternaria alternata (phylotype cid 120) on the allelopathic effect of the invasive forb centaurea stoebe when in competition wi ... | 2014 | 24488227 |
| selectivity of florasulam in 4 grass species during the seed harvest year. | results from one year indicated that florasulam (primus) and its combination with fluorxypyr applied in spring of the seed harvest year, were completely selective in seed crops of 4 grass species; namely agrostis stolonifera, festuca rubra rubra, koeleria macrantha and lolium multiflorum. experimental treatments also included a reference product i.e. bentazone + dichlorprop-p and an untreated control; in total 7 treatments were involved. the prime objective of this study was to investigate not o ... | 2001 | 12425099 |
| an invader differentially affects leaf physiology of two natives across a gradient in diversity. | little is known about how exotics influence the ecophysiology of co-occurring native plants or how invader impact on plant physiology may be mediated by community diversity or resource levels. we measured the effect of the widespread invasive forb spotted knapweed (centaurea maculosa) on leaf traits (leaf dry matter content, specific leaf area, leaf nitrogen percentage, leaf c:n ratios, and delta13c as a proxy for water use efficiency) of two co-occurring native perennial grassland species, mona ... | 2008 | 18543627 |
| differences in root uptake of radiocaesium by 30 plant taxa. | the concentration of cs was measured in the shoots of 30 taxa of plants after exposing the roots for 6 h to 0.1 microg radiolabelled cs g(-1) soil. there were maximum differences between chenopodium quinoa and koeleria macrantha of 20-fold in cs concentration and 100-fold in total cs accumulated. there was a weak relationship between rb (k) and cs concentration across the 30 taxa, but a strong relationship within the gramineae and chenopodiaceae. taxa in the chenopodiaceae discriminated approxim ... | 1997 | 15093373 |