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Atrazine-resistant or -susceptible biotypes of Senecio vulgaris and Amaranthus retroflexus were compared with regard to DM production, resource alloca...

Ten species of Umbelliferae were examined with regard to the time of year at which seedlings emerged and the survival of seeds in cultivated soil. The...

On flat bog with deep peat where heather (Calluna vulgaris), the principal food of the birds, was scarce application of superphosphate, or ground mine...

At two localities in northwest England that had recently been inundated by the sea, the decline in the density, biomass and species spectrum of Lumbri...

Ammonium-oxidizing bacteria (Nitrosolobus sp.) were counted every 2 days for 28 days in the top 5 cm of a soil at Rothamsted. The population density f...

The rate of increase of Erysiphe graminis f. sp. hordei, in the stands grown in small field plots, was directly related to the proportion of barley in...

The growth of Festuca arundinacea and Lolium perenne at a moderately exposed site in SE Scotland was compared with that in a sheltered enclosure in 19...

Diurnal movements of heads and leaves of sunflower cv. Hysun 30 were determined from 3-dimensional maps of the organs. Dirunal E.-W. oscillations of t...

A new technique is described which can be used to separate the effects of root and shoot interactions between spp. or populations. The technique allow...

An analysis was made of recent observations of solar radiation receipt in upland areas and the longer term data on h of bright sunshine. Estimates wer...