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The pH, percentage moisture, and temperature of colliery spoil, and the K, Ca, Mg, Na, Fe, Zn, Cu, Mn and Al concentration of saturation paste extract...Read more
The enchytraeid populations of soil samples were recorded for 4 yr in a newly felled area and untreated control area (Sept. 1975-79) and for 2 yr (197...Read more
Trees of two Scots pine phenotypes (poor and fertile soils) and lodgepole pine (intermediate) were exposed side by side in a field study. Biomass cons...Read more
Plant productivity is influenced by water status, temperature, and photosynthetically active radiation, the effects of which provide an environmental ...Read more
Low phosphorus (P) availability limits plant biomass production in fens, which is a prerequisite for the persistence of many endangered plant species....Read more
Plant-parasitic nematodes are important pests of agriculture, and transgenic plants with potential for nematode control are currently being developed....Read more
The performance of Lolium perenne plants grown in roadside soil in the absence of roadside atmospheric conditions was studied. Significantly fewer pla...Read more
Plant diversity can increase nitrogen cycling and decrease soil-borne pests, which are feedback mechanisms influencing subsequent plant growth. The re...Read more
Changes in microbial activity and populations of Protozoa and nematodes were followed in decomposing barley root material buried in soil cores and in ...Read more
Though co-occurrence of invasive plant species is common, few studies have compared the community and ecosystem impacts of invaders when they occur al...Read more