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pinus radiata/potassium
L'enllaç es desa al porta-retalls
7 resultats
Magnesium nutrition and photosynthesis in Pinus radiata: clonal variation and influence of potassium.
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Magnesium (Mg) nutrition and photosynthesis were studied in clones of Pinus radiata D. Don grown in sand culture for 21 weeks at four Mg concentrations (0.008, 0.04, 0.2 and 0.4 mM) and three potassium (K) concentrations (0.25, 0.5 and 2.5 mM). We found significant clonal variation in Mg nutrition
Effects of certain cations on the formation and infectivity of Phytophthora zoospores. 1. Effects of calcium, magnesium, potassium, and iron ions.
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The effects of four cations, Ca2+, Mg2+, K+, and Fe3+, upon the production of zoosporangia by isolates of four species of Phytophthora in axenic culture have been investigated. A response surface design was used to examine main effects and possible interactions. Responses to Ca2+ and Fe3+ were
Effects of wood bark and fertilizer amendment on trace element mobility in mine soils, Broken Hill, Australia: implications for mined land reclamation.
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Soil amendments can immobilize metals in soils, reducing the risks of metal exposure and associated impacts to flora, fauna and human health. In this study, soil amendments were compared, based on "closed system" water extracts, for reducing metal mobility in metal-contaminated soil from the Broken
Nutrient accumulation in trees and soil following irrigation with municipal effluent in Australia.
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Irrigation of tree crops is being evaluated as a method of land disposal of municipal effluent in Australia. A study was carried out from 1980-84 in which seven tree species were sprinkler-irrigated with effluent at an annual rate of 1191-1752 mm. Effective weed control and frequent irrigation
Foliar nutrient retranslocation in Eucalyptus globulus.
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We measured patterns of change in concentrations and contents of nitrogen, phosphorus, potassium, magnesium and calcium in fully expanded leaves of young Eucalyptus globulus (Labill.) trees growing in a plantation in southeastern Australia, over a 12-month period beginning at the onset of spring.
Capillary electrophoresis of the major anions and cations in leaf extracts of woody species.
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Capillary electrophoresis methods are described for the analysis of the major inorganic anions (nitrite, nitrate, chloride, sulphate, phosphate), organic acids (oxalate, malate, citrate, succinate) and inorganic cations (ammonium, potassium, sodium, calcium, magnesium) in leaf extracts. Analytical
Retranslocation of foliar nutrients in evergreen tree species planted in a Mediterranean environment.
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Internal nutrient recycling through retranslocation (resorption) is important for meeting the nutrient demands of new tissue production in trees. We conducted a comparative study of nutrient retranslocation from leaves of five tree species from three genera grown in plantation forests for commercial
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