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  • 1
    Electronic Resource
    Electronic Resource
    Mineral composition and growth of Colorado spruce (Picea pungens) seedlings under calcareous soil conditions (1986)
    Springer
    Plant and soil 94 (1986), S. 341-348 
    Details
    ISSN: 1573-5036
    Keywords: Calcareous soil ; Foliar analysis ; Growth pattern ; Nitrogen nutrition ; Picea pungens Engeln ; Prairie ; Provenances
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Field studies were conducted to assess the mineral nutrition and growth of Colorado spruce (Picea pungens Engln) seedlings (2–4 yr) from provenances selected for superior growth on calcareous prairie soils. Tissue nutrient concentrations and response to nitrogen were determined by use of foliar analysis and growth pattern studies. Soil conditions ranged from 7.6–7.8 for pH, 12–23% for total CaCO3, and 5–6% for active CaCO3. Foliage mineral composition showed relatively low phosphorus (0.09–0.15%) and high calcium (0.45–1.52%) assimilation. Seasonal growth and seedling response to added nitrogen was not adversely affected by the calcareous soil condition. Levels of nitrogen in the foliage required for optimum growth ranged from 1.5–2.0% and were similar to that of other conifer species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374328
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  • 2
    Electronic Resource
    Electronic Resource
    Association of cation and organic anion accumulation with iron chlorosis of Scots pine on prairie soils (1980)
    Springer
    Plant and soil 56 (1980), S. 293-300 
    Details
    ISSN: 1573-5036
    Keywords: Calcareous soils ; Calcium ; Cation-anion balance ; Induced-iron chlorosis ; Nitrate ; Organic anions ; Pinus sylvestris L ; Prairie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Iron chlorosis of 4 year old Scots pine (Pinus sylvestris L.) in comparison to areas of adjacent healthy growth on calcareous prairie soil, was associated with slight increases in the soluble ion content of the saturation paste extract. Such increases in soluble ions (mainly calcium sulphate) were associated with significant increases in ash, cation (including iron) and organic anion content of the chlorotic needles. Increasing levels of available soil nitrate were also related to increase in organic anions. Nitrogen and phosphorus assimilation was adversely affected under conditions of iron chlorosis. These observations support the theory of induced iron deficiency associated with elevated levels of organic anions or translocated cations and are applicable to plantings of conifers on prairie soils.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02205858
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    Paper (German National Licenses)
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