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| Web URL(s): | https://dl.sciencesocieties.org/publications/sssaj/pdfs/40/3/SS0400030398
Last checked: 12/07/2016
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| Publication Type:
| Refereed |
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| Author(s): | Brown, J. C.;
Jones, W. E. |
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| Author Affiliation: | USDA, ARS, Plant Stress Laboratory, Beltsville, MD |
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| Title: | A technique to determine iron efficiency in plants |
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| Source: | Soil Science Society of America Journal. Vol. 40, No. 3, May/June 1976, p. 398-405. |
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| Publishing Information: | Madison, WIS |
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| Keywords: | TIC Keywords: Stress; Iron
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| Abstract/Contents: | Soil tests should predict crop response to fertilization. In the case of Fe, plant factors seem to affect the use of Fe by the plant; thus, soil tests may not be reliable. Use of soil Fe by plants is genetically controlled by an adaptive mechanism which is activated in Fe-efficient plants in response to Fe-stress, but remains inactive if Fe is sufficient. Fe-inefficient plants develop less Fe-stress response than Fe-efficient plants. Using this range of Fe-stress response in plants as a basis, we developed a technique to screen plants for Fe efficiency. A limited supply of Fe and some control of pH in the growth medium were required in this technique. The pH was controlled by using nutrient solutions, N only as NO3, and N as NH4 and NO3, and by varying the CaCO3 and P concentrations in the solutions. The optimum supply of Fe (0.2 mg Fe/liter) was determined by growing the plants at different Fe concentrations. Four Fe-inefficient and four Fe-efficient plant varieties, representing four plant species, were used as test plants. The plants were screened in mixed cultures and were rated in order of greatest Fe efficiency. Green plants contained more and chlorotic plants contained < 43 ug Fe/g, but the degree of Fe-chlorosis was the best index of Fe-efficiency. A suggested sequence for screening plants for Fe-efficiency is presented. |
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| Language: | English |
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| References: | Unknown |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Brown, J. C., and W. E. Jones. 1976. A technique to determine iron efficiency in plants. Soil Sci. Soc. Am. J. 40(3):p. 398-405. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/sssaj/pdfs/40/3/SS0400030398
Last checked: 12/07/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: S 590 .S65 |
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