CHLORIDE UPTAKE BY VARIOUS TURFGRASS SPECIES AND CULTIVARS

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Abstract
Twelve cultivars representing eight grass species were each grown in a sand/vermiculite medium in the greenhouse, fed six solutions varying in chloride content for 140 days, and cut at lawn height. Six harvests were obtained and analyzed for chloride uptake. Visual ratings and yields indicated that the grasses tolerate relatively high chloride levels for a considerable time. Chloride uptake increased with time and increasing chloride content of the solutions. Uptake was less from alkaline than from acid solutions. Highland bentgrass (Agrostis tenuis Sibth.), Italian ryegrass (Lolium multiflorum Lam.) and timothy (Phleum pratense L.) were the least tolerant, while Norlea perennial ryegrass (Lolium perenne L.) and Kentucky 31 tall fescue (Festuca arundinacea Schreb.) were the most tolerant to chlorides. Kentucky bluegrass (Poa pratensis L.) and creeping red fescue (Festuca rubra L.) were intermediate in this respect.

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