Full TGIF Record # 71228
Item 1 of 1
Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Cummings, H. D.; Yelverton, F. H.; Bowman, D. C.; Rufty, T. W. Jr.
Author Affiliation:North Carolina State University
Title:Root-zone temperature had a greater effect on creeping bentgrass rooting than trinexapac-ethyl
Section:Turfgrass science
Other records with the "Turfgrass science" Section
Meeting Info.:Minneapolis, MN: November 5-9, 2000
Source:2000 Annual Meeting Abstracts [ASA/CSSA/SSSA]. 2000, p. 165.
Publishing Information:[Madison, WI]: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America
# of Pages:1
Keywords:TIC Keywords: Agrostis stolonifera; Golf courses; Golf greens; Root growth; Growth regulators; Trinexapac-ethyl; Shoot growth; Root weight; Root zone; Soil temperature
Cultivar Names:Penncross
Abstract/Contents:"Creeping bentgrass (Agrostis stoloniferous var. palustris Huds.) is the grass of choice for most golf course putting greens; however, it is marginally adapted to the transition zone as evidenced by the loss of most of the root system during summer months. Maximum root growth of creeping bentgrass in North Carolina occurs in spring and fall. Plant growth regulators (PGRs) like trinexapac-ethyl (TE) are applied to creeping bentgrass in spring and fall to control shoot growth, but they may also impact rooting during these periods of maximum growth. The objective of this experiment was to determine the relative effects of TE on root-biomass production of 'Penncross' creeping bentgrass maintained in hydroponics with nutrient solutions at either 14, 18, 22, 26, 30, 34, or 38 C for 16 days. Nutrient solution temperatures simulated common soil temperatures. Twice the label rate (0.11 kg ai/ha) was applied to 1/2 of the plants 1 month before and 2 days before initiation of temperature treatments in run 1 and 2 days before initiation of temperature treatments in run 2. Root-zone temperature (p=<0.0001, runs 1 and 2) had a grater effect on root-biomass production than the TE treatment (p=0.028, p=0.017 runs 1 and 2, respectively). The response of root weights to root-zone temperature was curvilinear and showed a large decline at 34 C. TE treated roots had more root-biomass than the non-treated."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Cummings, H. D., F. H. Yelverton, D. C. Bowman, and T. W. Jr. Rufty. 2000. Root-zone temperature had a greater effect on creeping bentgrass rooting than trinexapac-ethyl. Annu. Meet. Abstr. p. 165.
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