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Common PGR helps creeping bentgrass weather drought
Date:4/15/2010

NEW BRUNSWICK, NJIrrigation water for turfgrass has become increasingly restricted due to environmental factors such as insufficient precipitation; increased domestic, agricultural, and industrial consumption; and contamination of potable water supplies. This water deficit has created an increased need to identify promising water conservation strategies and implement stringent restrictions in water use.

In their ongoing search for ways to improve turfgrass growth in environments where water is limited, scientists are searching for effective water saving practices by looking to factors that influence drought resistance. Discovering which turfgrasses respond favorably to these practices can assist turfgrass management professionals in their selection of water-saving species or cultivars and provide valuable information to the burgeoning turfgrass industry.

A new study examines the effects of the plant growth regulator trinexapac-ethyl (TE) on turf growth and water use for creeping bentgrass (Agrostis stolonifera L.) exposed to drought stress. Researchers from Rutgers University and the Agricultural University of Hebei, China, published the study in a recent issue of the Journal of the American Society for Horticultural Science. According to the study, among the most common practices used for water conservation in turfgrass management is the use of plant growth regulators (PGRs). Trinexapac-ethyl (TE) is one of the most widely used PGRs in the management of turfgrass, used mainly for clipping reduction, seedhead suppression in annual bluegrass, and improvement of overall turf quality.

The researchers sprayed plant foliage of a creeping bentgrass cultivar with TE at 14 days before and at the initiation of drought stress. TE-treated and untreated plants were exposed to well-watered or drought stress conditions for 28 days in a growth chamber. Among the results: TE-treated plants exhibited a reduced rate of water depletion from the soil a
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Contact: Michael W. Neff
mwneff@ashs.org
703-836-4606
American Society for Horticultural Science
Source:Eurekalert

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