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  • Articles  (34)
  • Angiosperms
  • Calcium
  • Ultrastructure
  • hypertension
  • Springer  (34)
  • Cell Press
  • Nature Publishing Group
  • 1980-1984  (34)
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (34)
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  • Articles  (34)
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  • Springer  (34)
  • Cell Press
  • Nature Publishing Group
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  • 1
    Electronic Resource
    Electronic Resource
    Effects of acid irrigation and liming on two clones of Norway spruce (1980)
    Springer
    Plant and soil 57 (1980), S. 305-321 
    Details
    ISSN: 1573-5036
    Keywords: Aluminium ; Acid precipitation ; Calcium ; Calcium carbonate ; Clone ; Iron ; Magnesium ; Manganese ; Nitrogen ; Picea abies ; Phosphorus ; Potassium ; Sulphate ; Sulphur
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The effect of acid irrigation on the growth of rooted cuttings ofPicea abies (L.) Karst, was investigated in a pot experiment lasting 3 years. It involved two clones of Norway spruce, H 253 Bogstad I and H 254 Bogstad II. Irrigation water of pH 5.4, 4.0, 3.0 and 2.5 was used. Liming was included in the experiment. After the experimental period, the plants of all treatments were growing reasonably well. However, those plants irrigated at pH 2.5 were slightly discoloured. The plant mortality was only 3% throughout the experiment, and was not connected to acid irrigation. The limiting growth factor was N. All other nutrient elements measured in the plants were close to optimal concentration. Plants irrigated at pH 2.5, and to some extent at pH 3, contained excessively high concentrations of Al, t-S and SO4. The total amount of Ca, Fe and Mn taken up by the plants decreased with increasing soil acidity. The increased growth of clone H 254 relative to H 253, produces a corresponding impression on soil characteristics. Soil acidity is governed by acid irrigation and CaCO3 application, but the clonal effects are also of importance. Norway spruce appears to be tolerant to Al concentrations as high as 50 mmol/kg in the needles.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02211689
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  • 2
    Electronic Resource
    Electronic Resource
    Effects of a soil fulvic acid on the growth and nutrient content of cucumber (Cucumis sativus) plants (1981)
    Springer
    Plant and soil 63 (1981), S. 491-495 
    Details
    ISSN: 1573-5036
    Keywords: Calcium ; Copper ; Flowers ; Iron ; Leaves ; Magnesium ; Nitrogen ; Nutrient uptake ; Phosphorus ; Potassium ; Koots ; Shoots ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Cucumber (Cucumis sativus) plants were grown in Hoagland solution to which 20 to 2000 ppm of a soil fulvic acid (FA) were added. The addition of 100 to 300 ppm of FA produced highly significant increases in the growth and development of above and below ground plant parts, in the uptake of nutrient elements (N, P, K, Ca, Mg, Cu, Fe and Zn), and in the formation of numbers of flowers per plant. Effects of adding 500 and more ppm of FA were less beneficial.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02370049
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  • 3
    Electronic Resource
    Electronic Resource
    Effects of dry and moist incubation of soils on the extractability of native and applied soil copper (1982)
    Springer
    Plant and soil 64 (1982), S. 215-224 
    Details
    ISSN: 1573-5036
    Keywords: Calcium ; chloride-extractable Cu ; Copper ; EDTA-extractable Cu ; Incubation ; Isotopically-exchangeable Cu ; Moisture content ; Temperature
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The amount of copper extracted from soils by EDTA was found to increase with the temperature of extraction. Under controlled conditions of extraction, the amount of applied copper extracted from soils by EDTA decreased during incubation of soils under both moist and dry conditions. The recovery of applied copper by EDTA appeared to be related to the amounts of manganese and iron oxides in the soil. On the basis of comparisons with calcium chloride-extractable copper and isotopically-exchangeable copper it is suggested that EDTA extraction could over-estimate the availability of soil copper to plants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02184253
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  • 4
    Electronic Resource
    Electronic Resource
    Nutrition ofPinus caribaea in its native savanna habitat (1982)
    Springer
    Plant and soil 64 (1982), S. 381-391 
    Details
    ISSN: 1573-5036
    Keywords: Atmosphere ; Calcium ; Fertility ; Forestry ; Magnesium ; Nitrogen ; Nutrients ; Phosphorus ; Pinus caribaea ; Potassium ; Savanna ; Sodium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Fertility levels in soils beneathPinus caribaea trees were examined in the Mountain Pine Ridge savannas, Belize, where fire control has precipitated the development of pine woodland. Slight surface soil enrichment was recorded beneath pine canopies, but to levels well below those found beneath associated hardwoods. Estimates of total nutrient pools beneath trees showed modest cation accumulation beneath a 73 year old tree but some defecits in Ca and Mg beneath a 24 year old tree. A tap root cutting experiment on trees of the same species revealed no significant declines in foliar nutrient levels after 19 months. It is concluded that no pronounced long-term deterioration in soil fertility levels is developing beneath stands ofP. caribaea in the savanna, although some temporary nutrient declines may exist beneath young pine stands. Atmospheric inputs are the most likely source of nutrient accretion and it is suggested that the establishment of hardwood associates with pine may enhance the rates of nutrient capture from this source.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02372521
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  • 5
    Electronic Resource
    Electronic Resource
    Soil amelioration effects on peanut growth, yield and quality (1982)
    Springer
    Plant and soil 65 (1982), S. 319-334 
    Details
    ISSN: 1573-5036
    Keywords: Arachis hypogaea L. ; Calcium ; Gypsum ; Lime ; Nodulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary In order to study the reasons for poor peanut (Arachis hypogaea L.) performance on an Avalon medium sandy loam, a three year field study was undertaken to investigate the effects of lime and gypsum applications on growth, yield and quality. Rates of up to 2,400 kg agricultural lime/ha/annum significantly increased soil pH (1N KCl) and exch. Ca and decreased levels of exch. Al and Al saturation in the soil (0–150 mm). The effect of the same rates of gypsum was much less marked, only exch. Ca increasing and Al saturation decreasing to any substantial extent. In the absence of lime (i.e. even where gypsum was applied). nodulation was poor and the plants developed a general chlorosisc. 90 days after planting. Liming markedly improved nodulation whereas annual applications of gypsum had the opposite effect. Liming significantly increased the hay, pod and kernel yields by up to 73, 105 and 117%, respectively. On average, gypsum applications had no significant effects. Liming increased shelling percentage, the percentage mature pods, 100-kernel mass and protein concentration in the kernel, and decreased the incidence of pops and kernels with black plumule. Applications of gypsum had little effect on quality except for a decreased incidence of black plumule. It appeared that the improved crop performance with liming resulted from a reduction in Al toxicity which improved nodulation. Calcium deficiency did not appear to be a major cause of poor peanut growth and quality in the unameliorated soil.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02375053
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  • 6
    Electronic Resource
    Electronic Resource
    Nutrient accumulation byPinus caribaea in its native savanna habitat (1982)
    Springer
    Plant and soil 69 (1982), S. 105-118 
    Details
    ISSN: 1573-5036
    Keywords: Calcium ; Fertility ; Forestry ; Magnesium ; Nitrogen ; Nutrients ; Phosphorus ; Pinus caribaea ; Potassium ; Savanna
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Concentrations of P, N, K, Ca, and Mg in above-ground tissues ofP. caribaea were sampled in the species'native savanna habitat. Concentrations were relatively low, but some evidence of higher consumption of K and Ca was found in trees grown on more fertile soils. Regressions were developed to predict the quantities of nutrients sequestered in above-ground tree tissues, and estimates made of the quantities stored in above-ground stands of this species in its native habitat and in several plantations elsewhere. Estimates were also made of the nutrient removals to be expected by harvesting these stands in different ways. Nutrient quantities stored in stands generally exceed those extractable from savanna surface soils, and it is suggested that inputs from the atmosphere are the most probable alternate nutrient source. A comparison of these inputs for tropical areas with the quantities required for stand growth in the savanna, and harvesting removals, suggests that an adequate supply of all elements except P exists, provided that capture by pine is effective. However, atmospheric inputs generally fall below the storage and harvest removal rates for fast growing exotic plantations of this species suggesting that multiple rotations of these plantations at current growth rates may not be feasible without artifical fertilization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02185709
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  • 7
    Electronic Resource
    Electronic Resource
    Effects of waterlogging on young wheat plants (Triticum aestivum L.) and on soil solutes at different soil temperatures (1982)
    Springer
    Plant and soil 69 (1982), S. 311-326 
    Details
    ISSN: 1573-5036
    Keywords: Aeration ; Calcium ; Carbon dioxide ; Ethylene ; Nitrate ; Nitrite ; Nitrous oxide ; Oxygen ; Potassium ; Roots ; Triticum aestivum ; Waterlogging ; Wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary We report a study of the mechanism by which the response of plants to waterlogging can be modified by soil temperature. Wheat was grown initially in well-aerated soil in a controlled environment room before the soil was flooded with aerated, deionized water. The soil temperature was maintained constant in the range 6–18°C while the air temperature was at 14°C. Waterlogging damage was greater in plants at the higher soil temperatures when the plants were compared at the same chronological age. However, when compared at the same growth stage, the response to soil temperature was little differenti.e. plants subjected to waterlogging for a long time at low soil temperatures exhibited a similar reduction in growth and other properties as those subjected briefly at higher temperatures. The concentration of dissolved oxygen in the soil solution declined rapidly at all temperatures, being almost zero after 36 h waterlogging. Temperature affected rates of change of the concentrations of dissolved carbon dioxide, ethylene, nitrous oxide, nitrite, nitrate, calcium and potassium. The importance of soil-and plant-determined properties in the waterlogging response of plants at different temperatures are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02372453
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  • 8
    Electronic Resource
    Electronic Resource
    Some aspects of the development of the endodermis and cortex ofTilia cordata andPicea sitchensis (1983)
    Springer
    Plant and soil 71 (1983), S. 147-153 
    Details
    ISSN: 1573-5036
    Keywords: Cortex ; Endodermis ; Picea sitchensis ; Tilia cordata ; Transfer cells ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The endodermis of bothTilia cordata andPicae citchensis progressess through 3 characteristic phases of development. These developments are delayed somewhat in the xylem pole endodermis ofT. cordata, while inP. sitchensis 3–5 passage cells are found. The cortex ofT. cordata is characterised by very thick walls, while that ofP. sitchensis is characterised by a thick walled layer just outside the endodermis and by 2–3 outer layers of transfer cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02182649
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  • 9
    Electronic Resource
    Electronic Resource
    The search for and interpretation of genetic controls that enhance plant growth under deficiency levels of a macronutrient (1983)
    Springer
    Plant and soil 72 (1983), S. 335-350 
    Details
    ISSN: 1573-5036
    Keywords: Calcium ; Nutrient stress ; Phosphorus ; Potassium ; Root growth
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Techniques developed to measure growth of tomatoes and beans under limiting amounts of either P, K or Ca in solution culture reveal differences among strains. Genetic analysis permits estimates of gene action for control of efficiency and the isolation of improved segregants. The genetic isolates have value in studying mechanisms contributing to uptake, transport and utilization processes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02181972
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  • 10
    Electronic Resource
    Electronic Resource
    Observations on the ultrastructure ofFrankia sp. in root nodules ofDatisca cannabina L. (1984)
    Springer
    Plant and soil 79 (1984), S. 383-402 
    Details
    ISSN: 1573-5036
    Keywords: Actinorhizae ; Datisca cannabina ; Frankia ; Nitrogen fixation ; Root nodules ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The fine structures of the microsymbiont inside the root nodules ofDatisca cannabina have been studied by light, by transmission- and by scanning-electron microscopy. The endophyte is prokaryotic and actinomycetal in nature. The hyphae are septate and branched, diameter 0.3–0.5 μm. The tips of hyphae are swollen to form electron-dense, clubshaped to filamentous vesicles, ranging in diameter: 0.4–1.4 μm. The endophyte penetrates through walls of the cortial cells. The infected zone is kidney shaped and confined to one side of the acentric stele. The orientation of infection is reversed from other actinorhizae exceptCoriaria. The hyphae are near the host cell wall and vesicles are directed towards the central vacuole. Vesicles are aseptate and no collapsing of the vesicle cell wall (void area) has been observed. Vesicle clusters structures are globular with an opening at one side of the cluster. The host cell is multinucleate or contains a lobed nucleus. Groups of mitochondria are located in between the hyphae, suggesting a strong association between the host and the endophyte for energy supply and amino acid production. The consequences of the inability to separate the mitochondria from the vesicle clusters in nodule homogenates in physiological studies have been discussed. Isolated vesicles clusters showed dehydrogenase activity, indicated by the presence of formazan crystals, after incubation with NADH and NBT. Strongest reducing activity was found within the vesicles. The possible role of filamentous vesicles in nitrogen fixation has been discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02184330
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