| |
| Web URL(s): | https://www.crops.org/publications/cs/pdfs/36/3/CS0360030705
Last checked: 08/05/2010
Requires: PDF Reader
Access conditions: Item is within a limited-access website _ |
|---|
| Publication Type:
| Refereed |
|---|
| Author(s): | Lee, Chiwon W.;
Jackson, Marcus B.;
Duysen, Murray E.;
Freeman, Thomas P.;
Self, James R. |
|---|
| Author Affiliation: | Dep. Plant Sciences; Dep. Plant Pathology, North Dakota State University, Fargo, ND; and Dep. of Soil and Crop Sciences, Colorado State University, Fort Collins, CO |
|---|
| Title: | Induced micronutrient toxicity in 'Touchdown' Kentucky bluegrass |
|---|
| Section: | Turfgrass Science
Other records with the "Turfgrass Science" Section
|
|---|
| Source: | Crop Science. Vol. 36, No. 3, May/June 1996, p. 705-712. |
|---|
| Publishing Information: | Madison, WI: Crop Science Society of America |
|---|
| # of Pages: | 8 |
|---|
| Keywords: | TIC Keywords: Toxicity; Mineral element toxicity; Micronutrients; Growth; Pigmentation; Chloroplasts; Poa pratensis; Nutrient uptake; Nutrient intolerance; Boron; Chlorine; Copper; Iron; Manganese; Molybdenum; Zinc; Physiology
|
|---|
| Cultivar Names: | Touchdown |
|---|
| Abstract/Contents: | "The growth of turfgrass may be affected by excess levels of micronutrients. The objectives of this study were to determine changes in growth responses, leaf pigmentation, and chloroplast structure of Kentucky bluegrass (Poa pratensis L. cv. Touchdown) as affected by elevated levels of micronutrients. Plants were established in peat-life mix in 11-cm pots using a standard nutrient solution and were thereafter constantly fertilized with nutrient solutions supplemented with individual treatments of 0.5, 1, 2, 4, 6, 8, or 12 mM of boron (B), chloride (CL), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), or zinc (Zn) for 7 wk. The control solution had (in μM) 20 B, 0.5 Cu, 40 Fe, 10 Mn, 0.5 Mo, and 4 Zn. The lowest micronutrient concentrations that showed visual toxicity symptoms were 0.5mM B, 12mM Cl, 1mM Cu, 4mM Fe, 0.5mM Mo, or 4mM Zn. A reduction in dry matter yield was evident when the nutrient solution contained 2mM B, 4mM Cu, 2mM Mo, or 4mM Zn. Elevated levels of Cl, Fe, or Mn did not alter the biomass yield. Chlorophyll-a (Chl-a), chlorophyll-b (Chl-b), and carotenoid contents decreased as B concentration increased. Chlorophyll (Chl) content, particularly that of Chl-b, increased with elevated levels of Fe. The altered Chl-b levels induced by Fe correlated with increased levels of light harvesting chlorophyll (LHC) aproproteins and granal membrane accumulations. The loss of Chl in the B and Mo treatments correlated with decreased stroma membrane level and smaller chloroplast size, respectively. A linear relationship between the tissue and nutrient-solution concentration existed for each micronutrient, suggesting a passive uptake by the plants. Findings of this study may be used in identifying altered growth and physiological characteristics of Kentucky bluegrass caused by supraoptimal levels of micronutrients." |
|---|
| Language: | English |
|---|
| References: | 39 |
|---|
| See Also: | Other items relating to: MICRO |
|---|
| Note: | Figures
Tables |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Lee, C. W., M. B. Jackson, M. E. Duysen, T. P. Freeman, and J. R. Self. 1996. Induced micronutrient toxicity in 'Touchdown' Kentucky bluegrass. Crop Sci. 36(3):p. 705-712. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=38654 |
| If there are problems with this record, send us feedback about record 38654. |
| Choices for finding the above item: |
|---|
| Web URL(s):
https://www.crops.org/publications/cs/pdfs/36/3/CS0360030705
Last checked: 08/05/2010
Requires: PDF Reader
Access conditions: Item is within a limited-access website _ |
| 
MSU catalog number: SB 183 .C7 |
| Find from within TIC:
Digitally in TIC by record number. |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
