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Radiation balance was measured from Oct.-Dec. 1965 in an irrigated cotton crop grown on ridges. During this time crop cover increased from about 10% t...

Examination of the effects of vehicle and pedestrian tracks of known age (13 or more years) and intensity of use (single to multiple passages) on vege...

A seed drill with 2 adjacent spouts blocked was used to sow winter wheat so that there were rows (a) 18 cm apart, (b) 18 cm from the next row on one s...

As a result of sunny and low flow conditions during late June 1976, water temp. increased to a max. of 27.6 deg C and accelerated the decay of substan...

Conservation and natural resource management challenges are as much social problems as biological ones. In recognition of this fact, ecologists and ec...

Mean adult bee populations were 18 000 in late May, 37 000 in early June and 13 000 in late September, while mean brood populations were 15 000 in lat...

The growth of interspecific hybrids between oilseed rape (Brassica napus subsp. oleifera) and hoary mustard (Hirschfeldia incana) was studied in diffe...

The population dynamics of B. globosus were studied at 5 river sites in the Zimbabwe highveld for between 4 and 28 months. Adult snail abundance, recr...

The following is virtually the author's summary. The patterns of distribution, of insects flying over pasture, to leeward of a mixed hedge in southern...

One ml Kjeldahl digest containing 1-25µg N is pipetted into a specimen tube. A nylon fabric disc is placed in a depression inside the plastic cap and ...