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  • 1
    ISSN: 1573-5036
    Keywords: Aster ; Bedding plants ; Celosia ; Coleus ; Growth effects ; Marigold ; NPK solutions ; Osmotic stress ; Petunia ; Polyethylene glycol ; Salinity ; Snapdragon
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Six ornamental species (Petunia hybrida, Callistephus hortensis, Coleus blumei, Celosia pyramidalis, Antirrhinum majus andTagetes erecta) were grown in solutions containing high concentrations of polyethylene glycol (MW 4000) or of Nitrogen: Phosphorus: Potassium. At equal osmotic potentials, top dry weight, leaf area and leaf elongation rate were all reduced more by polyethylene glycol than by NPK. Polyethylene glycol also produced some leaf damage which did not occur with NPK solutions. Osmotic potentials of −600 kPa due to NPK reduced growth of the six species by at least 25% compared with growth of control plants (at −20 kPa). Tolerance ranking to high fertilizer in the irrigation solution increased from Snapdragon (most sensitive), Marigold Coleus, Aster, Celosia and Petunia (most tolerant).
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1573-5036
    Keywords: Drainage ; Lycopersicon esculentum ; Salinity ; Temperature ; Tomato
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Tomato plants were grown at three constant temperatures (10, 20 and 28°C) with drained or waterlogged rootzones and were irrigated with saline solution (0.09M NaCl). Each increase in temperature resulted in an increase in leaf Na-ion and Cl-ion concentrations in plants grown with drained rootzones. However, with plants grown with waterlogged rootzones, maximum leaf concentrations of Na-ions and Cl-ions occurred at 20°C. At 10°C there were no differences between Na-ion and Cl-ion concentrations for drained or waterlogged treatments. At 20 and 28°C, waterlogging of the rootzone resulted in significantly higher concentrations of Na-ions and Cl-ions in leaf and stem tissues than occurred with drained rootzones. There were no differences in Na-ions and Cl-ions and Cl-ions in plant tops if plants were waterlogged with saline solution during the day or night. Transpiration increased significantly with each increase in temperature but showed no other treatment dependent responses.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Plant and soil 62 (1981), S. 221-230 
    ISSN: 1573-5036
    Keywords: Germination ; Salinity ; Subterranean clover
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Germination and growth responses of 15 early to midseason cultivars ofTrifolium subterraneum L. were determined at a range of irrigation water salinities (NaCl). There were significant cultivar differences in seed germination under standard conditions in the presence of pure solutions of NaCl from −10 to −330 kPa osmotic potential range. There were also significant cultivar differences in growth on a clay loam soil with increasing NaCl over the same range of osmotic potentials as used to test germination. There was a generally poor correlation between salt tolerance at germination and at later stages of growth.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1433-7339
    Keywords: Key words Bacteremia ; Crude mortality ; Attributable mortality ; Risk factors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A total of 262 bacteremic episodes were observed in cancer patients in a single cancer institution during the last 7 years, and the recorded outcome was death in 65. The 65 patients who died (24.8% overall mortality) were divided retrospectively into two subgroups: (a) those who died of underlying disease with bacteremia (45 cases, 16.9% crude mortality) and (b) those who died of bacteremia (20 patients, 7.7% attributable mortality). Comparison of several risk factors in subgroups of patients who achieved a cure (197 cases) and of those who died and whose deaths were attributable (20 cases) revealed six risk factors that were associated with attributable mortality: (1) chemotherapy-induced neutropenia (P 〈 0.03), (2) Acinetobacter/Stenotrophomonas spp. bacteremias (P 〈 0.001), (3) liver failure (P 〈 0.001), (4) inappropriate therapy (P 〈 0.0001), (5) organ complications (P 〈 0.003) and (6) multiresistant organisms (P 〈 0.001). Enterococci and Pseudomonas aeruginosa, surprisingly, were found more frequently in those who died of an underlying disease with bacteremia than among patients who were cured (17.6% vs 7.6%, P 〈 0.05 and 29.1% vs 13.8%, P 〈 0.02). Those who died of infection had higher numbers of positive blood cultures, with 2.05 per episode, than did those who died of underlying disease with bacteremia (1.82) or those who were cured (1.51). Other risk factors, such as underlying disease, type of chemotherapy, origin of bacteremia, age, and catheters did not predict either overall or attributable mortality within the study group.
    Type of Medium: Electronic Resource
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