Author:
Lowe David B.,Whitwell Ted
Abstract
Growth-regulating characteristics of trinexapac-ethyl, paclobutrazol, and flurprimidol were investigated on ‘Tifway’ bermudagrass and four turfgrass weeds (large crabgrass, goosegrass, bahiagrass, and purple nutsedge). All treatments reduced the height of Tifway bermudagrass (25 to 37%) and large crabgrass (14 to 34%), but the height of purple nutsedge, goosegrass, and bahiagrass was not consistently changed. In 1995, all rates of trinexapac-ethyl reduced clipping weights of Tifway bermudagrass (70 to 87%) and bahiagrass (53 to 59%) more than large crabgrass, goosegrass, or purple nutsedge (< 39%). Trinexapac-ethyl (0.4 kg ai/ha) and paclobutrazol (1.1 kg ai/ha) applications increased both large crabgrass clipping weight and canopy visible density. Increased large crabgrass density was attributed to greater tiller numbers with trinexapac-ethyl (60 tillers/pot) and paclobutrazol (63 tillers/pot) compared to untreated large crabgrass plants (53 tillers/pot). Weed growth was not suppressed as much as Tifway bermudagrass growth; therefore, turfgrass stands may be adversely affected by plant growth regulator use under weedy conditions.
Publisher
Cambridge University Press (CUP)
Subject
Plant Science,Agronomy and Crop Science
Reference21 articles.
1. Tall Fescue Response to Plant Growth Retardants and Fertilizer Sources
1
2. Suppression of a perennial subspecies of annual bluegrass (Poa annua spp;Johnson;reptans) in a creeping bentgrass (Agrostis stolonifera) green with plant growth regulators. Weed Technol.,1996
3. Influence of Plant Growth Regulators and Mowing on Two Bermudagrasses
4. Response of centipedegrass (Eremochloa ophiuroides) to plant growth regulators;Johnson;Weed Technol.,1992
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