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Two cultivars of barley, one resistant and one susceptible to aphids, were grown in pots in mono- or mixed culture in the laboratory, and either infes...
Read moreThe unwanted development of dense understorey vegetation composed of resource-acquisitive, tall plant species competing strongly with tree regeneratio...
Read moreMeasurements were made of the length and disposition of all branches on young trees of P. contorta (a) planted in Peeblesshire, Scotland, in 1966, and...
Read moreBarley and perennial ryegrass were grown at various densities in boxes and Italian ryegrass and timothy at various densities in the field. The initial...
Read moreIn the UK, overwintered stubbles are important foraging habitats for farmland birds, many of which are of current conservation concern. Maximizing the...
Read moreThe abundance of breeding skylarks (Alauda arvensis) was determined by surveying singing males in over 600 randomly selected 1-km squares throughout B...
Read moreThe scrub layer was studied in 11 selected areas of Riding Mountain National Park, Manitoba, which are used as winter range by wapiti (Cervus canadens...
Read moreTo estimate the effect of foliage at different positions in the profiles of kale crops on the rate of photosynthesis below it, crop LAI was varied by ...
Read moreAgrostis capillaris-Festuca ovina plant communities are widespread in the uplands of Great Britain. They are agriculturally productive but little is k...
Read moreWhen mammalian herbivores are present at high densities their browsing activity can have a negative effect on establishment or regeneration of native ...
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