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Litter bags, containing aspen or aster leaf litter, were used to compare decomposition in burned and adjacent unburned areas in forests in northeaster...
Read moreA triploid meadow fescue/perennial ryegrass hybrid and the 2 parent species were grown alone or in binary mixture and subjected to management for hay ...
Read moreThe abundance of several species of Forcipomyia, known to be pollinators of cacao, increased markedly in 1 cacao farm in Costa Rica when discs of rott...
Read moreThe mean nitrate reductase activity (NRA) of leaf tissue, from various nitrogen environments, was four times greater in Sporobolus pyramidalis than in...
Read moreA simple model is used to calculate transpiration and assimilation rates for leaves or canopies. This is then used to investigate interactions between...
Read moreSeed 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 moreClimax perennial grasses from Rhodesia showed greater preference than earlier seral species or crop cultivars for the ammonium source of nitrogen. It ...
Read moreIn the salt marshes of Morecambe Bay P. maritima was largely restricted to immature soils at low elevations and more organic soils with high Na conten...
Read moreBioassay based on the uptake of 32P from 5 X 10-6 M phosphate solution during a 15 min period was tested on birch (Betula verrucosa Ehrh.) and sycamor...
Read moreA 3-parameter probabilistic model provided a good fit to data relating seed set to the number of florets on red clover inflorescences visited by bumbl...
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