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| DOI: | 10.21273/HORTSCI.49.5.662 |
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| Publication Type:
| Refereed |
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| Author(s): | Zeng, Lusheng;
Liu, Jiayang;
Carrow, Robert N.;
Raymer, Paul L.;
Huang, Qingguo |
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| Author Affiliation: | Zeng: College of Resource and Environment, Qingdao Agricultural University, Qingdao; Liu: Fermentation Technology Division, School of Bioengineering, Huanghuai University, Zhumadian, China; Zeng, Carrow, Raymer, and Huang: Crop and Soil Sciences, Griffin Campus, University of Georgia, Griffin, GA |
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| Title: | Evaluation of direct application of enzymes to remediate soil water repellency |
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| Column Name: | Turf management
Other records with the "Turf management" Column
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| Source: | HortScience. Vol. 49, No. 5, May 1 2014, p. 662-666. |
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| Publishing Information: | Alexandria, Virginia: American Society for Horticultural Science |
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| # of Pages: | 5 |
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| Keywords: | TIC Keywords: Chitinase; Enzymes; Hydrophobic soils; Laccase; Localized dry spots; Organic coatings; Proteases; Water droplet penetration test; Water management; Water repellency
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| Abstract/Contents: | "Organic coatings on sand particles can cause soil water repellency (SWR) where a soil does not spontaneously wet; this leads to challenges in water management and crop production. In laboratory studies, we evaluated a novel approach using direct application of 10 enzymes at three (low, medium, high) dosages to remediate SWR on two sand turfgrass soils in a 3-day incubation study and a second study at high dosage with 1-day incubation. A soil:solution ratio of 1:1 (10 g soil and 10 mL solution) was used and a deionized water control included. For Soil 7, a very strongly hydrophobic soil from a localized dry spot turfgrass area with a water drop penetration time (WDPT) of 7440 seconds (untreated) and 332 to 338 seconds (water-treated), the high dosage rates of laccase, chitinase, and protease at 1 and 3 days incubation resulted in WDPT of less than 60 seconds (i.e., hydrophilic soil). Pectinase exhibited similar results only in the 3-day incubation study. On the strongly hydrophobic Soil 21 (WDPT of 655 seconds untreated; 94 to 133 water-treated) from the dry area of a fairy ring-affected area on a turfgrass site, high dosages of chitinase, laccase, pectinase, and protease reduced WDPT to less than 60 seconds in both studies; and medium dosage rates were also effective for all but protease in the 3-day incubation study. Each of the four most effective enzymes for reducing WDPT, noted previously, demonstrated a significant exponential or logarithmic relationship between decreasing WDPT and increasing enzyme dosage. Further studies in field situations will be required to determine enzyme effectiveness on SWR and water management." |
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| Language: | English |
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| References: | 28 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Zeng, L., J. Liu, R. N. Carrow, P. L. Raymer, and Q. Huang. 2014. Evaluation of direct application of enzymes to remediate soil water repellency. HortScience. 49(5):p. 662-666. |
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| DOI: 10.21273/HORTSCI.49.5.662 |
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MSU catalog number: b2217685a |
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