Full TGIF Record # 291474
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DOI:10.1080/01904167.2016.1237650
Web URL(s):http://www.tandfonline.com/doi/full/10.1080/01904167.2016.1237650
    Last checked: 11/06/2017
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http://www.tandfonline.com/doi/pdf/10.1080/01904167.2016.1237650
    Last checked: 11/06/2017
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Publication Type:
i
Report
Author(s):Mahdavi, Shahla; Kafi, Mohsen; Fallahi, Esmaeil; Shokrpour, Majid; Tabrizi, Leila
Author Affiliation:Mahdavi and Fallahi: Parma Research and Extension Center, University of Idaho, Parma, Idaho; Kafi, Shokrpour, and Tabrizi: Department of Horticultural Science and Engineering, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
Title:Drought and biostimulant impacts on mineral nutrients, ambient and reflected light-based chlorophyll index, and performance of perennial ryegrass
Source:Journal of Plant Nutrition. Vol. 40, No. 16, 2017, p. 2248-2258.
# of Pages:11
Publishing Information:New York, New York: Marcel Dekker, Inc.
Related Web URL:http://www.tandfonline.com/doi/abstract/10.1080/01904167.2016.1237650
    Last checked: 11/06/2017
    Notes: Abstract only
Keywords:TIC Keywords: Biostimulants; Chlorophyll index; Comparisons; Drought stress; Lolium perenne; Mineral nutrition; Performance; Species evaluation; Turfgrass quality; Water availability
Abstract/Contents:"Water shortage is a critical issue worldwide, and it may adversely impact nonfood landscape plants. Thus, the impact of two levels of evapotranspiration-based (ETc) water stresses and two biostimulants consisting of s-abscisic acid (s-ABA) and glycine betaine (GB), and their combined applications on perennial ryegrass (Lolium perenne) under climatic and soil conditions of the Intermountain West, USA, were studied. Clippings with 50% ETc had higher percentage dry weight (DW) but lower fresh weight (FW) and chlorophyll index (CI) than those with 75% ETc. The performance rating of plots with 75% ETc was significantly higher (better) than those receiving the 50% ETc treatment. Clippings with the 75% ETc treatment had higher concentrations of nitrogen (N), nitrate, phosphorous (P), sulfur (S), potassium (K), sodium (Na), and copper (Cu) than those with the 50% ETc treatment. Considering all mineral nutrient values, CIs, and performance ratings, we conclude that the application of 75% ETc is sufficient for maintaining a healthy turfgrass with a satisfactory appearance, while we can save 25% water as compared to the application of water at 100%. The application of biostimulants had no effect on clipping or root FWs, DWs, or percentage DWs. Clippings from GB-treated turfgrass had significantly higher N than those from all other biostimulants or non-treated control. Additionally, clippings from the plots with the GB treatment had significantly higher S, K, and Cl but lower Zn. Clippings from the s-ABA-treated turfgrass also had significantly higher K than those in non-treated control. Average performance ratings in s-ABA and GB, and s-ABA and GB were significantly higher than those in non-treated control, underscoring the values of these biostimulants in the reduction of drought stress."
Language:English
References:60
Note:Tables
Graphs
Geographic Terms:Intermountain West, US
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Mahdavi, S., M. Kafi, E. Fallahi, M. Shokrpour, and L. Tabrizi. 2017. Drought and biostimulant impacts on mineral nutrients, ambient and reflected light-based chlorophyll index, and performance of perennial ryegrass. J. Plant Nutr. 40(16):p. 2248-2258.
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DOI: 10.1080/01904167.2016.1237650
Web URL(s):
http://www.tandfonline.com/doi/full/10.1080/01904167.2016.1237650
    Last checked: 11/06/2017
    Access conditions: Item is within a limited-access website
http://www.tandfonline.com/doi/pdf/10.1080/01904167.2016.1237650
    Last checked: 11/06/2017
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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