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Mixtures of equal numbers of plants of different barley varieties or of a barley variety and an oat variety were grown in 5 field trials and 1 glassho...Read more
The effect of different intensities of winter grazing by barnacle geese, Branta leucopsis, on the yields of agricultural grasslands dominated by Loliu...Read more
Replacement series experiments are commonly used to study interactions between component spp. in a mixture. Conventional data analysis compares actual...Read more
Barley, Sinapis alba and Papaver rhoeas, and then barley, S. alba and Avena fatua were grown in pure stand and in mixtures of 2 and 3 species at diffe...Read more
A range of densities of B. sterilis were sown in pots with winter wheat cv. Avalon in 4 soils; a heavy clay loam and a lighter, sandy soil from Oxford...Read more
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...Read more
Sugar-beet was grown at 7 locations with different soil types in the E. of England and received 2 levels of N during 1960-2. Differences in yield betw...Read more
A statistical model is presented which explores the effects of weed patchiness on crop yield. Input data are a non-linear regression of yield versus w...Read more
Above-ground and below-ground environmental conditions influence crop yield by pollination, pest pressure and resource supply. However, little is know...Read more
Tropical agroforestry systems provide farmers with resources for their livelihoods, but are also well-recognized as refuges for biodiversity. However,...Read more