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DOI:10.21273/HORTSCI.33.5.841
Web URL(s):https://journals.ashs.org/hortsci/view/journals/hortsci/33/5/article-p841.xml
    Last checked: 11/13/2019
    Requires: PDF Reader
Publication Type:
i
Refereed
Author(s):Green, R. L.; Hartwig, R. C.; Richie, W. E.; Loeppert, R. H.; Beard, J. B.
Author Affiliation:Department of Soil and Crop Sciences, Texas A & M University, College Station, TX 77843-2474
Title:A selection procedure for iron-deficiency stress tolerance among warm-season turfgrasses using ferrihydrite-amended growth media
Section:Turf management
Other records with the "Turf management" Section
Source:HortScience. Vol. 33, No. 5, August 1998, p. 841-844.
# of Pages:4
Publishing Information:Alexandria, VA: American Society for Horticultural Science
Keywords:TIC Keywords: Warm season turfgrasses; Nutrient deficiency; Iron; Growing media; Soil amendments; Calcareous soils; Choice of cultivar; Stenotaphrum secundatum; Cynodon dactylon; Cynodon transvaalensis; Chlorosis; Resistance; Measurement; Methodology
Cultivar Names:Raleigh; Tifway
Abstract/Contents:"Iron-deficiency (Fe-deficiency) stress, characterized by chlorosis of leaf tissue, is a major limiting factor in turfgrass production on calcareous soils. The objectives of this study were to: 1) evaluate ferrihydrite-amended growth media and the threshold amount of Fe initially added for use in a whole-plant screening procedure for selecting cultivars that are tolerant to Fe-deficiency stress conditions; 2) measure and evaluate whole-plant growth characteristics that could be an index of Fe deficiency stress; and 3) assess the potential of using a synthetically produced Fe oxide, ferrihydrite, as a slow-release Fe fertilizer source. Iron-stress sensitive 'Raleigh' St. Augustinegrass [Stenotaphrum secundatum (Walt.) Kuntze] and Fe-stress tolerant 'Tifway' bermudagrass [Cynodon dactylon (L.) pers x C. transvaalensis Davy] cultivars were grown under glasshouse conditions in a medium consisting of quartz sand, 5% (m/m) CaCO₃, and a ferrihydrite amendment providing Fe in concentrations of 0, 15, 30, 46, or 120 mg·kg⁻¹ media, (equivalent to 2, 3, 4, 5, or 10 mg DTPA-extractable Fe/kg media). There also was a nonlimiting iron control. St. Augustinegrass was first rated for iron chlorosis 83 days after planting (DAP) while bermudagrass was first rated at 294 DAP. Initial Fe levels equivalent to 5 mg DTPA-extractable Fe/kg media showed potential for screening genotypes. Visual estimates of iron chlorosis and chlorophyll contents of leaves were the best indicators of low soil Fe availability. A single ferrihydrite soil amendment at 10 mg DTPA-extractable Fe/kg media was adequate in preventing chlorosis for the duration of the study (174 and 509 days for St. Augustinegrass and bermudagrass, respectively).
Language:English
References:28
Note:Tables
See Also:Other items relating to: IRON
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Green, R. L., R. C. Hartwig, W. E. Richie, R. H. Loeppert, and J. B. Beard. 1998. A selection procedure for iron-deficiency stress tolerance among warm-season turfgrasses using ferrihydrite-amended growth media. HortScience. 33(5):p. 841-844.
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DOI: 10.21273/HORTSCI.33.5.841
Web URL(s):
https://journals.ashs.org/hortsci/view/journals/hortsci/33/5/article-p841.xml
    Last checked: 11/13/2019
    Requires: PDF Reader
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