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  • Eucalyptus maculata  (3)
  • Springer  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Copper nutrition of Eucalyptus maculata Hook. seedlings: Requirements for growth, distribution of copper and the diagnosis of copper deficiency (1994)
    Springer
    Plant and soil 167 (1994), S. 181-187 
    Details
    ISSN: 1573-5036
    Keywords: copper deficiency ; critical concentrations ; diagnosis ; Eucalyptus maculata ; lignification ; symptoms
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract A glasshouse experiment was conducted to define the response of Eucalyptus maculata seedlings to the addition of nine rates of copper (Cu) to a Cu-deficient sand. Plants were harvested 128 days from sowing. Symptoms of Cu deficiency included marginal necrosis in young fully expanded leaves (YFEL), deformed leaf margins, death of lateral shoots, bleeding at nodes on the main stem and reduced lignification of xylem fibres and vessels. Plant height and the number of nodes on the main stem were unaffected. In plants supplied with 0 Cu, whole top and root fresh weights were depressed by 27% and 32% respectively. The external Cu requirement for maximum growth of E. maculata seedlings was similar to that for wheat grown in the same soil. In Cu-adequate plants, leaf Cu concentrations decreased with distance from the shoot apex. Cu levels in stems varied little with position and were similar to the YFEL. Cu concentrations in leaves and stems were depressed in Cu-deficient plants to 〈1.0 μg g−1 dry weight (d.w.) (roots: 1.5 μg g−1 d.w.). The external Cu supply did not greatly alter the distribution of Cu within the plant. Young leaves at the shoot tip are recommended for diagnosis of Cu deficiency: critical values for shoot d.w. were about 1.5 μg Cu g−1 d.w. Lignification of wood was suppressed where Cu concentrations fell below 1.5 μg g−1 d.w.: the Bussler test for lignification would thus be a valuable indicator of Cu deficiency.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00007943
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  • 2
    Electronic Resource
    Electronic Resource
    Zinc nutrition and leaf carbonic anhydrase activity ofEucalyptus maculata seedlings andTrifolium subterraneum (1989)
    Springer
    Plant and soil 113 (1989), S. 287-290 
    Details
    ISSN: 1573-5036
    Keywords: carbonic anhydrase ; diagnosis ; Eucalyptus maculata ; nutrient deficiency ; Trifolium subterraneum ; zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Carbonic anhydrase activity in selected leaves was examined in relation to zinc supply toEucalyptus maculata seedlings andTrifolium subterraneum grown in the glasshouse on a zinc-deficient sand. In both species, carbonic anhydrase activity was closely related to the zinc supply and fell to 0 in severely-deficient plants. Enzyme activity increased linearly as a function of the leaf zinc concentration. InE. maculata plants supplied with adequate zinc, carbonic anhydrase levels were only 3% of those inT. subterraneum. It is concluded that foliar zinc analysis is more sensitive than the carbonic anhydrase assay for determining the zinc status ofE. maculata seedlings. Critical zinc concentration for young fully-expandedE. maculata leaves was between 9 and 10 μg g−1 dry matter.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02280195
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  • 3
    Electronic Resource
    Electronic Resource
    Effect of zinc supply on growth of three species of Eucalyptus seedlings and wheat (1985)
    Springer
    Plant and soil 88 (1985), S. 377-384 
    Details
    ISSN: 1573-5036
    Keywords: Carbonic anhydrase ; Dry matter ; Eucalyptus maculata ; E. marginata ; E. patens ; Seedlings ; Symptoms ; Triticum aestivum ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Effects of zinc supply on shoot and root dry weight, root length, zinc concentrations and carbonic anhydrase activity were measured in 52 day old seedlings ofEucalyptus maculata, E. marginata, E. patens and wheat grown in a zinc deficient soil in the glasshouse. Symptoms of zinc deficiency in the eucalyptus and wheat appeared within 20 to 35 days. Eucalypt seedlings had short internodes and small necrotic leaves, reduced dry weight of shoots and roots, root length and zinc concentrations in young leaves; the measurable level of leaf carbonic anhydrase activity decreased to zero. Similar responses also occurred in wheat. The level of zinc fertilizer required for normal growth of Eucalyptus seedlings is therefore likely to be similar to that used for wheat and other agricultural crops.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02197494
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