Abstract Docks are a widespread problem in grassland, necessitating novel management solutions as pesticides become increasingly regulated. The objective was to investigate the role of soil test Potassium (K) concentrations (Morgan's solution; Na acetate + acetic acid, pH 4.8; STK) on competitiveness docks grassland. experimental site (52°21 N, 7°18 W) reseeded with perennial ryegrass October 2...

ABSTRACT The present study was undertaken to investigate the diuretic activity of Rumex vesicariys.Linn and its formulation in experimental rats. The preliminary phytochemical investigation was carried out to identify the various chemical constituents present in the alcoholic extract. It was found that the Rumex vesicarius contain carbohydrate, glycosides, saponin, steroids, and flavonoids and ...

Canton Ticino in southern Switzerland is exposed to some of the highest concentrations of tropospheric ozone in Europe. During recent field surveys in Canton Ticino, foliar symptoms identical to those caused by ozone have been documented on native tree and shrub species. In Europe, the critical ozone level for forest trees has been defined at an AOT40 of 10 ppm.h O3 (10 ppm.h accumulated exposu...

One idea to explain the high incidence of specialisation in phytophagous insects is that their nervous systems are simple and unable to efficiently recognise multiple host plants. Here this 'neural limitations' hypothesis is tested using a generalist (the summer winged virginopara) and specialist (the autumn gynopara) morph of a single clone of the black bean aphid, Aphis fabae, that are almost...