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Ten species of Umbelliferae were examined with regard to the time of year at which seedlings emerged and the survival of seeds in cultivated soil. The...
Read moreThe presence of weeds within the crop provided a habitat which was more suitable for some of the arthropod predators of P. rapae. Harpalus rufipes was...
Read moreThe effects of 5 planting densities (p), viz. 10x20, 10 x 10, 10 x 7. 5, 10 x 5 and 5 x 7. 5 cm., on leaf growth and bulb yield were investigated for ...
Read morePure swards of S48 timothy and S215 meadow fescue, grown from seed in large concrete containers out of doors, were cut (a) every 4 weeks during summer...
Read moreFactors affecting the production and survival of lambs, including vulnerability to predation, were studied in a flock of about 850 Blackface hill shee...
Read moreSeeding is an important management tool in aridland restoration, but seeded species often fail to establish. Previous research has largely focused on ...
Read moreThe following is based largely on the author's summary. During investigations in Britain in 1968 on the effect of weed control on the incidence of Pie...
Read moreThe principle threats for sustainable production of wild collected medicinal plants are related to ecological factors, such as endemism, and botanical...
Read moreSeeds from 11 ruderal spp. collected from localities in S. Warwickshire were stored outdoors in cylinders sunk in the ground, and seed viability was t...
Read moreWe monitored 100 artificial nests of four different designs to examine the occupancy and breeding success of predatory birds in nest site limited, ste...
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