Predicting initial tall fescue root growth response to calcium/aluminum solution concentrations

John S. Kruse, William P. Miller, Maxim J. Schlossberg, Daniel Yanosky, Daniel B. Hall

Research output: Contribution to journalArticle

Abstract

A study was conducted to quantify effects of soluble aluminum (Al) and gypsum (CaSO4) on initial root growth of three varieties of tall fescue (Festuca arundinacea). Experiments were performed in a growth chamber using hydroponic solutions containing Al from 0 to74 μM in combination with CaSO4 at 0 to10 mM. Seedlings were grown for 7d, harvested, air dried, scanned, and weighed for treatment comparisons. Significant differences in root length existed between varieties in Al-only solutions at low Al concentrations. All varieties showed reduced root growth at concentrations greater than 37 μM Al. Increased calcium (Ca2+) and sulfate (SO42-) at given concentrations of Al resulted in greater root growth. Relative root growth increased approximately 30% to >80% at 37 μM Al as CaSO4 increased from 2.5 to 10mM. A simple logistic model adequately described the effects of Al and CaSO4 on root growth (r2 = 0.86, 0.95, and 0.96 for the three varieties).

Original languageEnglish (US)
Pages (from-to)1227-1239
Number of pages13
JournalCommunications in Soil Science and Plant Analysis
Volume40
Issue number7-8
DOIs
StatePublished - Apr 1 2009

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Festuca arundinacea
growth response
aluminum
root growth
calcium
calcium sulfate
hydroponics
air drying
gypsum
logit analysis
growth chambers
logistics
sulfates
seedling
sulfate
seedlings
air

All Science Journal Classification (ASJC) codes

  • Agronomy and Crop Science
  • Soil Science

Cite this

Kruse, John S. ; Miller, William P. ; Schlossberg, Maxim J. ; Yanosky, Daniel ; Hall, Daniel B. / Predicting initial tall fescue root growth response to calcium/aluminum solution concentrations. In: Communications in Soil Science and Plant Analysis. 2009 ; Vol. 40, No. 7-8. pp. 1227-1239.
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Predicting initial tall fescue root growth response to calcium/aluminum solution concentrations. / Kruse, John S.; Miller, William P.; Schlossberg, Maxim J.; Yanosky, Daniel; Hall, Daniel B.

In: Communications in Soil Science and Plant Analysis, Vol. 40, No. 7-8, 01.04.2009, p. 1227-1239.

Research output: Contribution to journalArticle

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