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Seed collected from natural stands of P. menziesii growing at (a) 250, (b) 520 and (c) 880 m alt. in Oregon, and from a cross between trees in (a) and...
Read moreCombining several crop species and associated agricultural practices in a crop sequence has the potential to control weed abundance while promoting we...
Read moreA hay crop was cut at three different dates in 1990 from a mesotrophic (meadow) grassland in Upper Teesdale, under various fertilizer, grazing and cut...
Read moreThe relevance to conservation of a restriction on the start of haymaking in species-rich meadows is included in the management prescription for the Pe...
Read moreThe enhancement of biodiversity in meadow grassland, an environmental aim of European agricultural policy, requires definition of appropriate manageme...
Read moreAgricultural policy in the Pennine Dales Environmentally Sensitive Area in northern England aims to enhance plant species diversity in agriculturally ...
Read moreSeedlings and 2-tiller ramets of Poa trivialis, P. annua, Agrostis stolonifera and Festuca rubra were planted into an established sward of Lolium pere...
Read moreThe authors present a model simulating the effects of the acridid Melanoplus sanguinipes on the yield of spring wheat planted in infested stubble. The...
Read moreStudies on bird damage to irrigated rice were carried out in 1975-7 on 2 irrigated farms at Bongor, Chad and Yagoua, Cameroun. The level of damage in ...
Read moreFour models for predicting budburst in northern broadleaved trees, based on response to spring warming alone, or with the response to spring warming m...
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