HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) An erratum has been published Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Bacha, R. E. Articles by Hossner, L. R. Search for Related Content PubMed Articles by Bacha, R. E. Articles by Hossner, L. R. Agricola Articles by Bacha, R. E. Articles by Hossner, L. R.

Characteristics of Coatings formed on Rice Roots as Affected by Iron and Manganese Additions¹

ABSTRACT

Rice plants (Oryza sativa ‘Brazos’) were grown with varying rates of application of Fe and Mn. Solution concentration of Fe ranged from 0.5 to 50.5 ppm and Mn from 0.1 to 12.5 ppm in an experiment designed to study the coatings formed on rice roots grown under anaerobic conditions. Root coatings were removed for analysis with citrate-bicarbonate-dithionite solution. Chemical analysis inidcated that the coatings were composed primarily of Fe. Manganese was present in detectable amounts only when solution concentrations were > 1.0 ppm.

Scanning electron micrographs of the coatings showed a precipitate on the surface of the rice root. X-ray diffraction analysis of coatings identified the iron oxide mineral lepidocrocite (-FeOOH) as the only crystalline component of the coatings.

¹ Contribution from Dep. of Soil & Crop Sci. and Texas Agric. Exp. Stn., Texas A & M University, College Station, TX 77843.

² Graduate Research Assistant and Professor, respectively. The senior author is now Agronomist for Instituto Riograndense do Arroz, Cachoeirinha, R. S., Brazil.

Received for publication March 2, 1977. Accepted for publication May 4, 1977.

This article has been cited by other articles:

				W-J. Liu, Y-G. Zhu, F. A. Smith, and S. E. Smith Do iron plaque and genotypes affect arsenate uptake and translocation by rice seedlings (Oryza sativa L.) grown in solution culture? J. Exp. Bot., August 1, 2004; 55(403): 1707 - 1713. [Abstract] [Full Text] [PDF]

				L. C. BATTY, A. J. M. BAKER, and B. D. WHEELER Aluminium and Phosphate Uptake by Phragmites australis: the Role of Fe, Mn and Al Root Plaques Ann. Bot., April 1, 2002; 89(4): 443 - 449. [Abstract] [Full Text] [PDF]