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The 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 moreSeeds of 16 arable weed spp. collected in 1977 were sown outdoors in boxes or pots at various depths. Most grass spp. emerged in the autumn, while man...
Read moreChanges in the weed flora of Boddington Barn field were monitored during 20 years of arable cropping after being ploughed out of grass in 1960. Seedli...
Read moreThe buried viable seed content was determined for some leys and permanent pastures. Seeds of Poa annua were abundant under the leys but absent under t...
Read moreAchenes of 7 species of Carduus, Cirsium and Onopordum were collected in August-September and mixed with the top 2.5 or 7.5 cm of soil which was then ...
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 decline of seeds of a natural population of arable weeds under a grass sward was monitored by germination in the field. Plots of 0.9 m2 were dug o...
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