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An empirical model used to standardize data on root investigations was P = 100 (1-e-fx) where P was the percentage of roots in x cm of soil, and f was...
Read moreMeasurements were made during the winter of 1977/78 at the Welsh Plant Breeding Station of changes of leaf, stolon and root biomass, stolon length and...
Read moreThis report focuses on the North American aquatic plants Elodea canadensis (Canadian pondweed) and E. nuttallii (Nuttall's waterweed), particularly th...
Read moreExperiments were made in Ontario, Canada, over 12 wk in a greenhouse and 3 yr in the field with different proportions (100; 75/25; 50/50; 25/75; 100) ...
Read moreLight interception by model hedgerow orchards and light distribution over their surfaces were investigated using a computer for the direct light calcu...
Read moreLolium perenne cv. S23, Trifolium repens cv. S184 and T. repens cv. Olwen were grown in the glasshouse as monocultures and as mixtures. Drought condit...
Read moreSenescence and death of plant parts are frequently accelerated by various stresses to which plants are subjected. The dynamics of these responses can ...
Read moreA population of 570 adult beetles (Cyrtobagous sp.) released onto plants of Salvinia molesta in field cages declined to 40 adults over 7 months, and i...
Read moreAnalytical data (tabulated) show that A. indica has considerably improved the nutrient content and physical condition of the infertile acid sands on w...
Read moreSpiders were sampled, by suction (D-vac) and direct counts of their webs, in a controlled sheep-grazing experiment on calcareous ex-arable land and in...
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