Full TGIF Record # 310335
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Web URL(s):https://scisoc.confex.com/scisoc/2019am/meetingapp.cgi/Paper/120047
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Publication Type:
Material Type:Unknown
Content Type:Abstract or Summary only
Author(s):Mertz, Isaac; Christians, Nick E.; Thoms, Adam; Pease, Benjamin; Lindsey, Alex
Author Affiliation:Iowa State University, Ames, IA
Title:Evaluation of creeping bentgrass responses to fertilization with the branched-chain amino acids
Section:C05 turfgrass science
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Golf turf management oral 1: Cultural practices, physiology, and water (includes student competition)
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Meeting Info.:San Antonio, Texas: November 10-13, 2019
Source:ASA, CSSA and SSSA International Annual Meetings. 2019, p. 120047.
Monographic Source:Evaluation of creeping bentgrass responses to fertilization with the branched-chain amino acids, 2019, p. 120047.
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: Agrostis stolonifera; Amino acids; Fertilizer combinations; Fertilizer evaluation; Shoot density; Urea fertilizers
Trade Names:GreenNCrease
Abstract/Contents:"The branched-chain amino acids (BCAA) leucine (L), isoleucine (IL), and valine (V) are synthesized in plants and are essential to growth of most organisms. In humans, BCAA have been demonstrated to increase muscle protein synthesis, and that increase is related to the intake ratio of L to IL and V. Preliminary research on creeping bentgrass (Agrostis stolonifera L.) under controlled environment conditions indicated that when BCAA were applied in a 4:1:1 ratio (L:IL:V) (3.4 kg-nitrogen [N] ha-1), shoot density of creeping bentgrass can be increased 30-40% compared to equal urea N. The objective of this study was to determine if increases in shoot density of creeping bentgrass previously observed under controlled environment conditions could translate to a field setting. To investigate this, a study was conducted on a mature creeping bentgrass putting green established on a United States Golf Association specified sand-based rootzone and subjected to application of BCAA, urea, and GreenNCrease. All treatments other than the untreated control received a total of 3.4 kg-N ha-1 application-1. The BCAA ratios evaluated were 4:1:1, 8:1:1 and 12:1:1, using a BCAA full-rate (3.4 kg-N ha-1). These BCAA ratios were also applied as 4:1:1+N, 8:1:1+N, and 12:1:1+N, which consisted of a BCAA half-rate (1.7 kg-BCAA-N ha-1), in combination with urea (1.7 kg-urea-N ha-1). At the conclusion of the study, creeping bentgrass receiving applications of 4:1:1+N increased shoot density by 27% and 7% compared to equal N from urea and GreenNCrease, respectively. Additionally, the BCAA 4:1:1+N treatment also increased creeping bentgrass leaf N content by 10% and 14% compared to urea and GreenNCrease. All other combinations of BCAA were equal to urea N. Based on the results of this study, it appears that BCAA are best applied as 4:1:1+N in the field, as a portion of the total applied N in combination with urea."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Mertz, I., N. E. Christians, A. Thoms, B. Pease, and A. Lindsey. 2019. Evaluation of creeping bentgrass responses to fertilization with the branched-chain amino acids. Agron. Abr. p. 120047.
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