Full TGIF Record # 310288
Item 1 of 1
Web URL(s):https://scisoc.confex.com/scisoc/2019am/meetingapp.cgi/Paper/119505
    Last checked: 02/03/2020
    Requires: JavaScript
Publication Type:
Content Type:Abstract or Summary only
Author(s):Lindsey, Alex; Thoms, Adam; Christians, Nick E.
Author Affiliation:Iowa State University, Ames, IA
Title:Turfgrass rooting response to humic acid fertilizers
Section:Turfgrass management and ecology poster (includes student competition)
Other records with the "Turfgrass management and ecology poster (includes student competition)" Section

C05 turfgrass science
Other records with the "C05 turfgrass science" Section
Meeting Info.:San Antonio, Texas: November 10-13, 2019
Source:ASA, CSSA and SSSA International Annual Meetings. 2019, p. 119505.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Keywords:TIC Keywords: Controlled release fertilizers; Dispersible granules; Fertilizer evaluation; Gypsum; Humic acid; Poa pratensis; Polymer-coated urea; Rooting; Starter fertilizers; Urea
Cultivar Names:Rush
Abstract/Contents:"One method of drought avoidance for turfgrass is to develop a more branched and deeper root system. Greenhouse research was conducted to determine the effects of adding humic containing products to fertilizers on turfgrass rooting. 'Rush' Kentucky bluegrass (Poa pratensis L.) was established in sand filled rooting tubes. Treatments included synthetic fertilizer with black gypsum (30% gypsum and 4.7% humic acid), polymer-coated humic-coated urea (PCHCU; 2.5% humic acid), urea + humic dispersing granules (HDG; 70% humic acid), starter fertilizer + HDG, starter fertilizer, stabilized nitrogen, urea, and a nontreated control. Fertilizers were applied at a rate of 48.8 kg ha-1 N and HDG was applied at 44.4 kg ha-1. Starter fertilizer and starter fertilizer + HDG resulted in increased longest root length (28 and 26%), total root length (105 and 112%), root surface area (152 and 157%), root volume (213 and 214%), root biomass (232 and 244%), longest shoot length (47 and 35%), and shoot biomass (205 and 204%) compared to urea. When compared to the control, starter fertilizer and starter fertilizer + HDG had even greater increases of longest root length (37 and 34%), total root length (213 and 223%), root surface area (287 and 294%), root volume (380 and 382%), root biomass (426 and 445%), longest shoot length (92 and 76%), and shoot biomass (309 and 307%). PCHCU and urea + HDG showed increases of total root length (37 and 20%) compared to urea. Furthermore, PCHCU had improved root surface area (42%) and root volume (46%) relative to urea. These results suggest that starter fertilizer application is critical to turfgrass rooting at establishment. In the absence of starter fertilizer, the addition of humic substances to fertilizers could enhance root development, thus possibly leading to drought avoidance."
Note:This item is an abstract only!
"Poster #1625"
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Lindsey, A., A. Thoms, and N. E. Christians. 2019. Turfgrass rooting response to humic acid fertilizers. Agron. Abr. p. 119505.
Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=310288
If there are problems with this record, send us feedback about record 310288.
Choices for finding the above item:
Web URL(s):
    Last checked: 02/03/2020
    Requires: JavaScript
Request through your local library's inter-library loan service (bring or send a copy of this TGIF record)