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| Web URL(s): | http://www.turf.rutgers.edu/research/abstracts/symposium1995.pdf#page=26
Last checked: 11/28/2207
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Heckman, J. R.;
Strick, J. E. |
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| Author Affiliation: | Heckman: Department of Plant Science, Rutgers University, New Brunswick, NJ and Strick: Program of History and Science, Princeton University, Princeton, NJ |
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| Title: | Teaching plant-soil relationships with color images of rhizosphere pH |
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| Section: | Articles
Other records with the "Articles" Section
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| Meeting Info.: | Cook College, Rutgers, NJ: January 5-6, 1995 |
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| Source: | Proceedings of the Fourth Annual Rutgers Turfgrass Symposium. Vol. 25, No. 1, 1995, p. 31. |
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| Publishing Information: | New Brunswick, NJ: Center for Turfgrass Science, Cook College, Rutgers, The State University of New Jersey |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Roots; Soil pH; Interactions; Nutrient availability; Soil acidity; Soil microorganisms; Disease susceptibility
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| Abstract/Contents: | "Plants and soils often do not receive their share of attention in the biology teaching laboratory despite their significance to human life and the environment. The opportunity to study complex living systems in the classroom is limited by many contraints. This laboratory exercise was developed to exhibit clear, graphic results within the normal class period using inexpensive materials and reasonable teacher preparation time. The exercise uses a simple imaging technique to illustrate the rounding soil environment. Plants are grown in rhizotrons using a low organic matter content sandy loam soil with either nitrate (NO₃⁻) or ammonium N (NH₄⁺) added and with or without a nitrification inhibitor. After 4 wk of growth, the root system is exposed and treated with fluid agar containing bromocresol purple pH indicator. The color changes outlining the rhizosphere become visible within about 10 minutes. When N is absorbed as NO₃⁻, alkalization of the rhizosphere occurs and is exhibited as purple. In contrast, when N is absorbed as NH₄⁺, acidification of the rhizosphere occurs and is exhibited as yellow. When NH₄⁺ N is added without the nitrification inhibitor, differences in color (pH) between the rhizosphere and bulk soil are less pronounced. The exercise achieves visually stimulating results that can be used to reinforce lectures on rhizosphere pH, nutrient availability, plant tolerance of soil acidity, microbial activity, and plant susceptibility to diseases." |
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| Language: | English |
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| References: | 13 |
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| Note: | Also appears as an abstract only in Proceedings of the fourth annual Rutgers Turfgrass Symposium, 1995, p. 31.
Pictures, color |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Heckman, J. R., and J. E. Strick. 1995. Teaching plant-soil relationships with color images of rhizosphere pH. Proc. Annu. Rutgers Turfgrass Symp. 25(1):p. 31. |
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| Web URL(s):
http://www.turf.rutgers.edu/research/abstracts/symposium1995.pdf#page=26
Last checked: 11/28/2207
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: SB 433 .R88 |
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