PDF
Root Chemistry of Douglas-fir Seedlings Grown Under Different Nitrogen and Potassium Treatments Item Info
- Title:
- Root Chemistry of Douglas-fir Seedlings Grown Under Different Nitrogen and Potassium Treatments
- Creator:
- Shaw, T.M.; Moore, J.A.; Marshall, J.D.
- Date Created (ISO Standard):
- 1998-04-01
- Description:
- Chemical changes in roots of Douglas-fir (Pseudotsuga menziesii var. g/auca (Bessn.) Franco) seedlings were induced under optimal and deficient levels of nitrogen (N) and potassium (K). Concentrations of sugar, starch, phenolics and proteinprecipitable tannins were significantly different by treatment in the roots of four-year-old Douglas-fir seedlings under varied Nand K regimes. Root tip starch concentrations were significantly higher and sugar concentrations were lower in plants receiving the low-N treatments. Seedlings receiving the high N-low K treatment had significantly lower concentrations of phenolics and tannins and lower ratios of defensive compounds to carbohydrates than seedlings receiving the high potassium treatments. Samples taken from two locations on the root system show that concentrations of all storage and defensive compounds were substantially higher in the root collar than in the root tips. Due to lower within tissue variation, we recommend sampling at root tips to better detect treatment differences. This study shows that N levels affect starch concentrations in the roots, while K levels affect root phenolic and tannin concentrations.
- Subjects:
- research (document genres) roots (plant components) fertilizer statistics
- Location:
- North and Central Idaho; Eastern Washington; Western Montana; Northeastern Oregon
- Publisher:
- Intermountain Forest Tree Nutrition Cooperative, University of Idaho, College of Forest, Wildlife and Range Sciences, Moscow
- Source:
- Shaw, T.M., J.A. Moore, J.D. Marshall, 1998. IFTNC Supplemental Report No. 3, Root Chemistry of Douglas-fir Seedlings Grown Under Different Nitrogen and Potassium Treatments. IFTNC, FWR, Univ. of Idaho, Moscow.
- Source Identifier:
- Root_Chemistry_of_DF_Seedlings_Grown_Under_Different_Nitrogen_and_Potassium_Treatments_IFTNC_1998
- Type:
- text
- Format:
- application/pdf
Source
- Preferred Citation:
- "Root Chemistry of Douglas-fir Seedlings Grown Under Different Nitrogen and Potassium Treatments", Idaho Forestry Research Collection, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/forestryresearch/items/forestryresearch903.html
Rights
- Rights:
- Educational use includes non-commercial use of text and images in materials for teaching and research purposes. Digital reproduction rights granted by University of Idaho Library. For other uses beyond educational use, please contact University of Idaho Library Special Collections and Archives Department at libspec@uidaho.edu.
- Standardized Rights:
- http://rightsstatements.org/vocab/InC-EDU/1.0/