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Samples of Heteroptera and Auchenorrhyncha were taken from replicated plots grazed by sheep in spring, summer, autumn and winter and from ungrazed are...

The survival of four populations of eggs of Hylemya (Leptohylemyia) coarctata (Fall.) at Rothamsted in southern England was studied. Few eggs disappea...

In further investigations at Rothamsted [cf. preceding abstract], parasitism, overcrowding (two or more larvae in the same shoot), disease and predati...

In general, bees collecting nectar only, as well as bees collecting nectar and pollen, preferred male-fertile to male-sterile cultivars of onion plant...

The equipment described makes use of a continuous measured flow (v) of dry N2O into a porometer cup attached to a known leaf area (a). The gas within ...

An experiment was conducted over 13 years at Moor House National Nature Reserve in the N. Pennines to examine the effects of clipping and removal on m...

Temperatures were measured at four depths in a strip clear-cut black spruce bog to determine the effect of forest canopy removal. Canopy removal had n...

The influence of interplanted shade trees on the light regime at the surface of mature tea bushes is described. Most of the light reaching a tea bush ...

The penetration of light into 5 distinct foliage patterns of tea bushes was studied. The 2 foliage types (semi-erect and horizontal) representing most...

Earthworm populations in direct drilled and ploughed plots were assessed twice annually for 5 years in a continuous cereal experiment at Woburn. In tw...