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| DOI: | 10.2134/itsrj2016.03.0202 |
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| Web URL(s): | https://dl.sciencesocieties.org/publications/its/articles/13/1/575
Last checked: 10/15/2019
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Mertz, Isaac;
Christians, Nick;
Ervin, Erik H.;
Zhang, Xunzhong |
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| Author Affiliation: | Mertz and Christians: Dep. of Horticulture, Iowa State Univ., Ames, IA; Ervin and Zhang: Dep. of Crop and Soil Environmental Sciences, Virginia Polytechnic Institute and State Univ., Blacksburg, VA |
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| Title: | Physiological responses of creeping bentgrass (Agrostis stolonifera L.) to a tryptophan-containing organic byproduct |
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| Section: | Soil biology, chemistry, and plant nutrition
Other records with the "Soil biology, chemistry, and plant nutrition" Section
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| Meeting Info.: | New Brunswick, New Jersey: July 16-21, 2017 |
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| Source: | International Turfgrass Society Research Journal. Vol. 13, No. 1, November 2017, p. 575-583. |
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| Publishing Information: | s.l.: International Turfgrass Society |
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| # of Pages: | 9 |
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| Related Web URL: | https://dl.sciencesocieties.org/publications/its/abstracts/13/1/575
Last checked: 01/19/2018
Notes: Abstract only |
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| Abstract/Contents: | "Amino acid-based products have been used as alternative fertilizer nitrogen (N) sources to improve turfgrass performance, especially where there is a strong reliance on synthetic N sources. However, the physiological mechanisms underlying improvements in turfgrass performance are not well documented. The objective of this research was to determine whether applications of a tryptophan-containing organic byproduct (TRP-B) or tryptophan (TRP) + urea improve creeping bentgrass (Agrostis stolonifera L.) performance compared with standalone applications of urea, a commonly used synthetic N source. At two separate universities, mature 'A-4' creeping bentgrass plugs were transplanted into containers and allowed to re-establish in growth chambers before being treated. Treatments included TRP-B, urea, and TRP + urea applied every 14 d at three different N rates: 2.5, 12.25, and 24.5 kg N ha-1. At the trial's end, TRP-B and TRP + urea increased leaf indole-3-acetic acid (IAA) by 227 and 255%, respectively, relative to urea at the high N rate, as measured at day 42 of the study. Applications of TRP-B and TRP + urea also increased root biomass by 22 and 20%, respectively, when compared with urea only at the high N rate. The TRP-B and TRP + urea treatments did not impact leaf total amino acids or photochemical efficiency when compared with urea only. Overall, results indicate that application of TRP-B or TRP + urea at 24.5 kg N ha-1 every 2 wk may improve leaf and root IAA content, root biomass, and subsequent creeping bentgrass quality relative to applications of urea only." |
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| Language: | English |
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| References: | 33 |
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| Note: | TIC-hosted web link available 2 years after publication date.
Tables
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Mertz, I., N. Christians, E. H. Ervin, and X. Zhang. 2017. Physiological responses of creeping bentgrass (Agrostis stolonifera L.) to a tryptophan-containing organic byproduct. Int. Turfgrass Soc. Res. J. 13(1):p. 575-583. |
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| DOI: 10.2134/itsrj2016.03.0202 |
| Web URL(s):
https://dl.sciencesocieties.org/publications/its/articles/13/1/575
Last checked: 10/15/2019
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: b2394179 |
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