Campus Units

Agronomy, Horticulture

Document Type

Article

Publication Version

Accepted Manuscript

Publication Date

6-28-2021

Journal or Book Title

Crop Science

DOI

10.1002/csc2.20577

Abstract

Turfgrass with sand-based root zones, such as golf course putting greens, are highly important economically and require intense management. However, problems are often associated with sand-based root zones such as low nutrient retention and limited microbial activity. Soil additives may increase soil biological activity, improve nitrogen (N) cycling efficiency, and thus reduce fertilizer N inputs. A two-year experiment was conducted on a sand-based creeping bentgrass (Agrostis stolonifera L.) putting green to investigate whether humic products could increase soil biological activity and improve turfgrass quality. Treatments included humic-coated urea (HCU; 2/3 rate and full rate), HCU + humic dispersing granules (HDG), HCU + black gypsum (BG), urea, HDG, and a nontreated control. Minimal differences were seen in microbial biomass and activity besides HCU + BG. The HCU + BG had 60% greater potentially net N mineralization (PMN) relative to the HDG and the nontreated control. Overall, incorporating humic substances with N fertilizer did not increase turfgrass quality, cover, and clipping biomass compared to N fertilizer alone. However, the addition of BG to N fertilizer enhanced microbial activity (i.e., PMN).

Comments

This is a manuscript of an article published as Lindsey, Alex J., Adam W. Thoms, Marshall D. McDaniel, and Nick E. Christians. "Evaluation of humic fertilizers on a sand‐based creeping bentgrass putting green." Crop Science (2021). doi:10.1002/csc2.20577. Posted with permission.

Copyright Owner

© The Authors. Crop Science © Crop Science Society of America

Language

en

File Format

application/pdf

Available for download on Tuesday, June 28, 2022

Published Version

Share

COinS