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Publications by O. Vaartaja

39 records.

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Effect of seed exudates of Pinus resinosa on the germination of sporangia and on the population of Pythium irregular in the soil.
Agnihotri, V. P.; Vaartaja, O.
Year: 1970    Catalog ID: 33101
Available from: Great Lakes Forestry Centre
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Stimulation of Waitea circinata by root exudates of Pinus cembroides.
Agnihotri, V. P.; Vaartaja, O.
Year: 1969    Catalog ID: 33115
Available from: Great Lakes Forestry Centre
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Interaction of nutrients and four antifungal antibiotics in their effects on pythium species in vitro and in soil.
Vaartaja, O.; Agnihotri, V. P.
Year: 1969    Catalog ID: 33107
Available from: Great Lakes Forestry Centre
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Seed exudates from Pinus resinosa and their effects on growth and zoospore germination of Pythium afertile.
Agnihotri, V. P.; Vaartaja, O.
Year: 1968    Catalog ID: 33112
Available from: Great Lakes Forestry Centre
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The influence of nitrogenous compounds on growth of pythium species.
Agnihotri, V. P.; Vaartaja, O.
Year: 1967    Catalog ID: 33116
Available from: Great Lakes Forestry Centre
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Root exudates from red pine seedlings and their effects on pythium ultimum.
Agnihotri, V. P.; Vaartaja, O.
Year: 1967    Catalog ID: 33111
Available from: Great Lakes Forestry Centre
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Inhibition of Pythium and Thanatephorus(Rhizoctonia) by leachates from a nursery soil.
Vaartaja, O.; Agnihotri, V. P.
Year: 1967    Catalog ID: 33106
Available from: Great Lakes Forestry Centre
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Effects of amendments, soil moisture contents, and temperatures on germination of pythium sporangia under the influence of soil mycostasis.
Agnihotri, V. P.; Vaartaja, O.
Year: 1967    Catalog ID: 33105
Available from: Great Lakes Forestry Centre
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A comparison of rhizosphere floras in conifer beds treated with fungitoxicants.
Vaartaja, O.; Agnihotri, V. P.
Year: 1967    Catalog ID: 33102
Available from: Great Lakes Forestry Centre
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Biological control of seedling diseases in nursery soils. O-X-3.
Vaartaja, O.
Year: 1965    Catalog ID: 26928
Available from: Great Lakes Forestry Centre
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Fungicide trials to control damping-off of conifers
Vaartaja, O.; Wilner, J.; Cram, W.H.; Salisbury, P.J.; Crookshanks, A.W.; Morgan, G.A.
Year: 1964    Catalog ID: 30439
Available from: Northern Forestry Centre
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Inoculation experiments with Amylostereum sp., from a wood wasp
Vaartaja, O.; King, J.
Year: 1964    Catalog ID: 30440
Available from: Northern Forestry Centre
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Chemical treatment of seedbeds to control nursery diseases
Vaartaja, O.
Year: 1964    Catalog ID: 30441
Available from: Northern Forestry Centre
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Ecotypic variation in photoperiodism of trees with special reference to Pinus resinosa and Thuja occidentalis
Vaartaja, O.
Year: 1962    Catalog ID: 30656
Available from: Northern Forestry Centre
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Taxonomy, morphology, and pathogenicity of Rhizoctonia species from forest nurseries
Saksena, H.K.; Vaartaja, O.
Year: 1961    Catalog ID: 30684
Available from: Northern Forestry Centre
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Potential pathgenicity of pythium isolates from forest nurseries
Vaartaja, O.; Salisbury, P.J.
Year: 1961    Catalog ID: 30702
Available from: Northern Forestry Centre
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Damping-off etiology especially in forest nurseries
Vaartaja, O.; Cram, W.H.; Morgan, G.A.
Year: 1961    Catalog ID: 30704
Available from: Northern Forestry Centre
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Demonstration of photoperiodic ecotypes in Liriodendron and Quercus
Vaartaja, O.
Year: 1961    Catalog ID: 30705
Available from: Northern Forestry Centre
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Photoperiodic ecotypes in trees
Vaartaja, O.
Year: 1961    Catalog ID: 30706
Available from: Northern Forestry Centre
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Descriptions of new species of Rhizoctonia
Saksena, H.K.; Vaartaja, O.
Year: 1960    Catalog ID: 30745
Available from: Northern Forestry Centre
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Notes on growing Abies in greenhouse
Vaartaja, O.
Year: 1960    Catalog ID: 30749
Available from: Northern Forestry Centre
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Photoperiodic response in seedlings of five species of Betula and Pinus
Vaartaja, O.
Year: 1960    Catalog ID: 30750
Available from: Northern Forestry Centre
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Selectivity of fungicidal materials in agar cultures
Vaartaja, O.
Year: 1960    Catalog ID: 30751
Available from: Northern Forestry Centre
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Effect of photoperiod on drought resistance of white spruce seedlings
Vaartaja, O.
Year: 1960    Catalog ID: 30752
Available from: Northern Forestry Centre
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Ecotypic variation of photoperiodic response in trees especially in two Populus species
Vaartaja, O.
Year: 1960    Catalog ID: 30753
Available from: Northern Forestry Centre
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Evidence of photoperiodic ecotypes in trees
Vaartaja, O.
Year: 1959    Catalog ID: 26176
Available from: Northern Forestry Centre
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Prevention of injury to tree seedlings during cellar storage
Wilner, J.; Vaartaja, O.
Year: 1958    Catalog ID: 26183
Available from: Northern Forestry Centre
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Photoperiodic responses in seedlings of northern tree species
Vaartaja, O.
Year: 1957    Catalog ID: 26175
Available from: Northern Forestry Centre
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Rate and timing of fungicidal soil treatments
Cram, W.H.; Vaartaja, O.
Year: 1957    Catalog ID: 25616
Available from: Northern Forestry Centre
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Field tests with fungicides to control damping-off of Scots pine
Vaartaja, O.; Wilner, J.
Year: 1956    Catalog ID: 26168
Available from: Northern Forestry Centre
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Principles and present status of chemical control of seedling diseases
Vaartaja, O.
Year: 1956    Catalog ID: 26169
Available from: Northern Forestry Centre
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Screening fungicides for controlling damping-off of tree seedlings
Vaartaja, O.
Year: 1956    Catalog ID: 26173
Available from: Northern Forestry Centre
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Damping-off pathogens of conifers and of caragana in Saskatchewan
Vaartaja, O.; Cram, W.H.
Year: 1956    Catalog ID: 26162
Available from: Northern Forestry Centre
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Photoperiodic response in germination of seed of certain trees
Vaartaja, O.
Year: 1956    Catalog ID: 26163
Available from: Northern Forestry Centre
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Toxicity of eight pesticides to spruce and caragana seed
Cram, W.H.; Vaartaja, O.
Year: 1955    Catalog ID: 25615
Available from: Northern Forestry Centre
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Review of chemical control of damping-off in forest nurseries.
Vaartaja, O.
Year: 1954    Catalog ID: 34170
Available from: Northern Forestry Centre
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Photoperiodic ecotypes of trees
Vaartaja, O.
Year: 1954    Catalog ID: 26159
Available from: Northern Forestry Centre
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Factors causing mortality of tree seeds and succulent seedlings
Vaartaja, O.
Year: 1954    Catalog ID: 26160
Available from: Northern Forestry Centre
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Temperature and evaporation at and near ground level on certain forest sites
Vaartaja, O.
Year: 1954    Catalog ID: 26161
Available from: Northern Forestry Centre
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This may not be a complete list of the author's publications. This list provides the author's publications since he or she joined, or worked in cooperation with, the CFS. When available, another link is provided for periods of work elsewhere.