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N fixation by white clover established on colliery spoil in S. Yorkshire was measured weekly between May and Nov. Residual spoil P levels from 2 rates...
Read moreS. jacobaea plants were grown under different irrigation regimes to assess the effect of summer moisture stress on their capacity to compensate for de...
Read moreThe effects of cultivation on the number of seeds of different spp. in arable land were investigated at 4 sites over several yr. Soil cores were obtai...
Read moreThe effects of different cultivation regimes on arable weed floras were investigated at 5 sites over several yr. At 3 sites arable crops were grown in...
Read moreThe relative importance to hares of pasture fields, with and without farm livestock, was assessed on a mixed farm of cereals and grass in Hampshire, S...
Read moreResults are given of studies on Arrhenatherum elatius-dominated grassland in 1973-5. The relevance of the results to grassland management for nature c...
Read moreSeeds collected from native herbaceous plants in the Sheffield region were subjected to a range of amplitudes of diurnal fluctuations in temp. All exp...
Read morePerennial ryegrass swards were continuously grazed by sheep. One sward was grazed to maintain an LAI (lamina) close to 1.0 ('hard' grazed) and a 2nd s...
Read moreThe design of an instrument for the simultaneous measurement of photosynthetically active radiation and red, far-red and blue light is described. The ...
Read moreProblems associated with the population dynamics and control of Simulium damnosum Theo. s.l. are discussed in relation to the programme for the contro...
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