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Найдено документов в текущей БД: 21
06
D 48

    Studien zur Biologie des Erregers Drechslera tritici-repentis, zur Anfalligkeit des Weizens und verschiedener Artverwandten sowie zur Bekamfung der DTR-Weizenblattdurre
[Текст] : монография / H. Mielke, A. Reichelt. - Berlin : Parey Buchverlag, 1999. - 76 с. : Ill. - (Mitteilungen aus der Biologischen Bundesanstalt fur Land- und Forstwirtschaft Berlin-Dahlem, ISSN 0067-5849 ; 366). - Библиогр: S. 72-76%ISBN 3-8263-3250-4. - 25-00 р.
УДК

Кл.слова (ненормированные):
Symptomauspragung%mykologische Untersuchungen%Material und Methoden

Аннотация: This work suggests and discusses possibilities for reductions of infection and prevention of DTR leaf-blight which may be accompished, by "classical methods of agricultural production" such as crop rotation, proper preparation of the seedbeds, suitable choice of wheat types, dressed seeds, optimal sowing and use of fungicides. For direct action against DTR leaf-blight in wheat, an early diagnosis of attack is of decisive importance to allow the best treatment with fungicides to be carried out. It is recommendable to use DTR fungicides at the very start of secondary infections (condia infections). With continuing +infection pressure, second treatments (and third treatments with mulched seeds) are necessary.


Доп.точки доступа:
Reichelt, A.
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632
C 46

    Field studies on attack flight and log selection by the Ambrosia beetle Trypodendron lineatum (Oliv.) (Coleoptera: Scolytidae)
[Текст] / J.A. Chapman. - Ottawa : Forest Entomology and Pathology Branch, Department of Forestry, 1962. - 74-92 с. : figures + tables. - Библиогр: p. 92. - 0-06 р.
УДК

Кл.слова (ненормированные):
methods%field observations%attractiveness

Аннотация: Field observations and objective data from "hidden-log" and other study situations, relating to attack flight behaviour of the ambrosia beetle, Trypodendron, lead to the conclusion that beetles are guided to attack by odours from logs. They indicate, also, that when searching for logs, beetles fly against the wind until they are near a source of attraction and then alight and continue their search by crawling. They suggest, furthermore, that stimuli different from those guiding beetles to logs are involved in initiation of burrowing activity. Attractiveness may differ markedly in logs similar in many other respects and may change greatly during a flight season; that of heavily attacked logs decreases while that of lightly- or non-attacked logs may remain low or increase considerably.

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632
S 36

    Zur Kausalanalyse der Disposition von Nadelbaumen fur den Befall durch nadelfressende Insekten am Beispiel Picea abies (L.) Karst. und Gilpinia hercyniae Htg. (Hym., Diprionidae)
[Текст] : монография / R. Schopf ; Universitat Gottingen. - Frankfurt am Main : J.D. Sauerlander's Verlag, 1986. - 185 с. : Abb. + Tab. - (Schriften aus der Forstlichen Fakultat der Universitat Gottingen und der Niedersachsischen Forstlichen Versuchsanstalt, ISSN 0344-5666 ; 87). - Библиогр: S.156-176%ISBN 3-7939-5087-5. - 8-00 р.
УДК

Кл.слова (ненормированные):
Material und Methoden%Darmproteasen%Biochemisch-physiologische Grundlagen

Аннотация: The book deals with the basis of biochemical needle analysis the predisposition of Norway spruce to the attack by a needle eating insect is quantified. The physiological bond between the sawfly and spruce is divided in three different experimental levels: (1) Synthesis of insect biomass by plant born nutrients. (2) Physiological potency of the plant to inhibit the insect metabolism by allelochemicals. (3) Physiological potency of the insect to break the plant defense.

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674
H66

    Heartwood and tree exudates
[Text] : монография / W.E. Hillis. - Berlin ; Heidelberg ; New York et al : Springer-Verlag, 1987. - 268 s. : рис. - (Springer Series in Wood Science). - eng. - Библиогр.: с. 209-238. - ISBN 3-540-17593-8 : 59.00 р.
УДК

Кл.слова (ненормированные):
forest products -- growth -- utilisation

Аннотация: Mankind will depend on renewable resources produced at low energy cost-such as forest products. Greater demands will require increased growth as well as utilisation with reduced loss. After a certain age, trees form heartwood containing increased amounts of extractives which are also formed in injured sapwood or are exuded. Their presence can provide trees with resistance to disease and forest attack, and they can also affect the efficient utisation of wood. In this book different facets of heartwood, extractives and exudates are reviewed as a whole for the first time. Basic biological and chemical aspects are brought together in a systematic fashion and will be invaluable for biologists, wood scientists and technologists

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06
S92

    Resistance to snow blight (Phacidium infestans Karst.) in different provenances of Pinus silvestris L.
[Text] = Resistens mot snoskytte hos olika tallprovenienser : научное издание / E. Bjorkman. - Stockholm : Skogshogskolan, 1963. - 16 p. : рис., табл., фото.цв. - (Studia Forestalia Suecica ; № 5). - eng. - Библиогр.: с. 14-15. - 0.05 р.
УДК

Кл.слова (ненормированные):
infection -- experimental material -- fungus

Аннотация: The experimental material was put out as 2+ 1 plants in the spring of 1954. In October 1956, four plants in each plot were inoculated with snow blight, and the remaing plants sprayed with a 3% solution of lime-sulphur to protect them from attack. The inoculated plants were all attacked by the fungus, and during the following winter constituted natural seats of infection; Details can be seen in table 1 and figs. 1 and 2

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06
S92

    Enzymatic splitting of sucrose by some strains of Valsa nivea Fr.
[Text] = Enzymatisk spjalkning av sackaros med nagra stammar av Valsa nivea Fr. : научное издание / A. Persson-Huppel. - Stockholm : Skogshogskolan, 1963. - 29 p. : рис., табл. - (Studia Forestalia Suecica ; № 7). - eng. - Библиогр.: с. 26-27. - 0.09 р.
УДК

Кл.слова (ненормированные):
bark extracts -- parent species -- fungus -- strains

Аннотация: The paper deals with the results of the present investigation: bark extracts from hybrid aspen and its parent species contained different sugars; if the fungus will, on the whole, establish and develop an attack inside the host, the capacity of utilizing the present sources of energy may be decisive; in experiments in vitro the effect of sucrose as a source of energy has been studied

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06
S92

    Physiology and decay activity of the birch cnk fungus Polyporus betulinus (Bull.) Fr.
[Текст] = Fysiologi och vednedbrytning hos bjorktickan Polyporus betulinus (Bull.) Fr. : научное издание / B. Henningsson. - Stockholm : Skogshogskolan, 1965. - 77 с. : рис., табл. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 34). - eng. - Библиогр.: с. 71-74. - 3.50 р.
УДК

Кл.слова (ненормированные):
decay experiments -- physiological experiments

Аннотация: The destructive activity on wood and physiological behaviour of Polyporus betulinus have been studied. When attacking birch wood under favourable conditions P. betulinus proved able to cause a maximal weight loss of about 71%. This was also true for Polyporus marginatus which was chosen as a comparative organism. Wood moisture increased steeply during the attack, at its peak reaching more than three times the moisture at the start. P. betulinus and P. marginatus did not cause so great a weight loss on birch sapwood as the most destructive white rotters

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06
S92

    Changes in impact bending strength, weight and alkali solubility following fungal attack on birch wood
[Text] = Foranderingar i slaghallfasthet, vikt och alkali- loslighet vid svampangrepp pa bjorkved : научное издание / B. Henningsson. - Stockholm : Skoghogskolan, 1967. - 21 p. : рис., табл. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 41). - eng. - Библиогр.: с. 20. - 0.52 р.
УДК

Кл.слова (ненормированные):
microbial attack -- pulpwood -- weight loss

Аннотация: The present study is part of comprehensive investigation of microbial attack on pulpwood of birch and aspen. The purpose of this study was to find out whether the various fungi which attack birch wood affect the strength of the wood to diffefering extents. It was also intended to discover whether there was a substantial loss in strength before any loss in weight could be recorded. Later the inerest was focussed on the relationships between alkali solubility, strength and weight loss.

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06
S92

    Microbial decomposition of unpeeled birch and aspen pulpwood during storage
[Text] = Mikrobiell nedbrytning av obarkad bjork- och asp- massaved under lagring : научное издание / B. Henningsson. - Stockholm : Skoghogskolan, 1967. - 32 p. : рис., табл. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 54). - eng. - Библиогр.: с. 31. - 0.86 р.
УДК

Кл.слова (ненормированные):
methods -- climate -- storage -- microflora -- density

Аннотация: The present study is part of comprehensive investigation concerning microbial attack on pulpwood of birch and aspen. the climate of storage places, the fungus flora, and the changes in moisture content, dry density and chemical composition of stores wood will be described and discussed.

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06
S92

    Effect of Fomes annosus on seedlings of Picea abies in the presernce of Boletus bovinus
[Text] = Fomes annosus' inverkan pa groddplantor av Picea abies i narvaro av Boletus bovinus : научное издание / A. Hyppel. - Stockholm : Skogshogskolan, 1968. - 16 p. : рис. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 66). - eng. - Библиогр. в конце ст. - 0.20 р.
УДК

Кл.слова (ненормированные):
attack -- microorganisms -- greenhouse conditions

Аннотация: The mycorrhiza-forming fungus Boletus bovinus (L. ex Fr.) O. Kuntze was shown to protect seedlings of Norway spruce from the usually fatal attacks, which result from treatment with the root rot fungus Fomes annosus (Fr.) Cke. New techniques were developed for the culture and application of both species of the microorganisms. The investigation was performed under greenhouse conditions

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06
S92

    Melampsora pinitorqua (Braun) Rostr. on progenies of Pinus silvestris L. and in relation to growth regulating substances
[Text] = Melampsora pinitorqua (Braun) Rostr. pa avkommor av Pinus silvestris och i forhallande till tillvaxtreglerande amnen : монография / A. Klingstrom. - Stockholm : Skogshogskolan, 1969. - 76 p. : рис., табл. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 69). - eng. - Библиогр.: с. 71-74. - Б. ц.
УДК

Кл.слова (ненормированные):
methods -- resistance -- extracts -- bioassay -- inhibitor

Аннотация: Various methods of recording pine twisting rust have been discussed, and attack frequences on 75 progenies of Pinus silvestris plus trees have been noted. Mention has also been made to the possibility of resistance breeding. Acid ether extracts of annual shoots of Pinus silvestris have been examined by various bioassays. Marked differences in the inhibitor effect between extracts from different pine clones have been established. A possible connection between inhibitor content and resistance has been discussed. Reduction in inhibitor content during axial extension and inhibitors in leachates from pine shoots has been connected with Melampsora occurrence. Gel filtration combined with thin layer chromatography has been used for separating tha extract components. Among the inhibitors a number of resin acids have been identified by chemical means

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06
S92

    Studies on wood degradation and cellulolytic activity of mocrofungi
[Text] = Studier over vednedbrytning och cellulolytisk aktivitet hos mikroswampar : научное издание / T. Nilsson. - Stockholm : Skogshogskolan, 1973. - 40 p. : рис., табл. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 104). - eng. - Библиогр.: с. 38-40. - ISBN 91-38-01611-7 : 0.80 р.
УДК

Кл.слова (ненормированные):
microfungi -- cellulose clearing method -- degradation of wood -- attack

Аннотация: During investigations on deterioration of wood in different situations, a great number of microfungi have been isolated at the laboratory. Most of the isolates have been assayed for cellulolytic activity and wood degradating capability. The aim of these studies was to examine which species are able to degrade wood, their type of attack and to investigate whether any correlations exist between wood degradation and cellulolytic activity on pure cellulose. The results for 160 different species are presented in a table.

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06
S92

    Versuche uber den Verlauf des Schwarmens von Borkenkafern und des Insektenbefalls an Kiefernholz in Mittelschweden
[Text] = Undersokningar av forloppet for barkborrarnas svarmning och inselsangrepp pa tallvirkr i Mellansverige : научное издание / H.H. Eidmann. - Stockholm : Skogshogskolan, 1974. - 26 p. : рис., табл. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 113). - ger. - Библиогр.: с. 26. - ISBN 91-38-01896-9 : 1.30 р.
УДК

Кл.слова (ненормированные):
periods -- insect attack -- bark beetles

Аннотация: The flight periods of bark beetles and the insect attack on pine logs, felled at intervals of 20 days from January to June, were studied by using window traps and by marking fresh entrance holes in the logs followed by autumn inspection. The periods of flight and attack had similar patterns. Blastophagus piniperda and B. minor, as well as several other bark beetle species, had relatively short periods of flight and attack, while especially Pityogenes chalcigraphus had a long flight period with less accentuated peak. Trypodendron lineatum had a flight pattern with one early and one late peak.

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06
S92

    Die Kiefernrindenwanze, Aradus cinnamomeus Panz. (Hemiptera-Heteroptera). Ein Beitrag zur Kenntnis der Lebensweise und der forstlichen Bedeutung
[Text] = Tallbarkstinkflyet Aradus cinnamomeus Panz. (Hemiptera-Heteroptera). Bidrag till kannedomen om dess levnadssatt och skiglika betydelse : монография / L. Brammanis. - Stockholm : Skogshogskolan, 1975. - 81 p. : рис., табл. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 123). - ger. - Библиогр.: с. 71-75. - ISBN 91-38-02369-5 : 0.90 р.
УДК

Кл.слова (ненормированные):
insects -- damage -- observations

Аннотация: This monograph on the pine bark bug is the result of many years' reserach work in Scandinavia and other countries. The author gives a historical survey of the places of discovery of this insect, which, not so long ago, was hardly regarded as harmful in the West-European countries. The damage is done by sucking out the cell juice of young pine trees which causes deformity and destruction of the vessels. The damage done by the insect has been explained by means of experimental work and observations. This insect is only to be found on Scots pine and larch. It prefers clean, dry and warm places and likes pine cultures on light soil. The thick, shadowy, and mixed cultures are only attacked at the edges. The consequences of the appearnce of the insect depend mainly upon the size of the insect population and the age of the tree. The chances fro 6-10-year-old pines to endure an attack are very small. The necessary prophylactic measure to be taken is to plant the cultures with closer planting space. It is possible to achieve successful results in the control of this insect by fertilizing with nitrogen and also by using the insecticide lindan.

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06
S92

    Use of X-ray radiography for studying seed quality in tropical forestry
[Text] = Anvandning av rontgenradiografi for frokvalitetsbestamning inom tropiskt skogsbruk : научное издание / S.K. Kamra. - Stockholm : Skogshogskolan, 1976. - 34 p. : рис., табл. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 131). - eng. - Библиогр.: 19-20. - ISBN 91-38-02802-6 : 0.80 р.
УДК

Кл.слова (ненормированные):
species -- method -- insect attack

Аннотация: Seeds or fruits of 165 forestry species from nine tropical countries were investigated by x-ray radiography. The results showed that the method can be reliably used for detecting empty, filled, insect-attacked, mechanically damaged and diseased seeds or fruits. The applications of x-ray radiography in tropical forestry for cone, fruit and seed collection, seed processing, nursery practice, seed trade and plant quarantines, and for research etc. are discussed.

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06
S92

    Testing Scots pine for resistance to Lophodermium needle cast
[Text] = Provning av tallens resistens mot tallskyttesvampen : научное издание / O. Martinsson. - Uppsala : The Swedish University of Agricultural Sciences, College of Forestry, 1979. - 63 p. : рис., табл. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 150). - eng. - Библиогр.: с. 40-42. - ISBN 91-38-04783-7 : 2.60 р.
УДК

Кл.слова (ненормированные):
biology of pathogens -- testing for resistance -- calculation

Аннотация: A method for assesing resistance to Lophodermium needle cast has been developed and applied for analysis of genetically dependent resistance in Scots pine. Determination of the decrease in height growth caused by the fungal attack was a satisfactory method for assessing the resistance. The relative height growth of the most susceptible progenies was reduced to about 30% of that of the most resistant progenies.

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06
S92

    Distribution of pine shoot beetle attacks within the crown of Scots pine
[Text] = Margborreangreppens fordelning i tallkronan : научное издание / B. Langstrom. - Uppsala : The Swedish University of Agricultural Sciences, College of Forestry, 1980. - 25 p. : рис., табл. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 154). - eng. - Библиогр.: с. 24-25. - ISBN 91-38-05588-0 : 1.00 р.
УДК

Кл.слова (ненормированные):
attack pattern -- intensity of attacks -- Pinus sylvestris L.

Аннотация: In the present study, the seasonal and spatial distribution of pine shoot beetle attacks within the pine crowns is described. An attempt is made to estimate the number of shoots which are affected by these attacks

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06
S92

    Damage to Pinus contorta in northern Sweden with special emphasis on pathogens
[Text] : научное издание / M. Karlman. - Uppsala : The Swedish University of Agricultural Sciences, College of Forestry, 1986. - 42 p. : рис., фото.цв. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 176). - eng. - Библиогр.: с. 38-42. - ISBN 91-576-2824-6 : 1.50 р.
УДК

Кл.слова (ненормированные):
provenance -- weather damage -- vole damage -- parasitic fungi

Аннотация: In the present study attention has been concentrated on the pathogens of lodgepole pine. The susceptibility to attack by various pathogens of ca. 100 different provenances of Pinus contorta (ca. 25 000 plants) in northern Sweden has been studied over periods of three to nine years. Due to the design of trials, only a small number of Scots pine provenances were included.

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06
F54

    Tuhohyonteisten ja sinistyman esiintyminen myrskyn kaatamissa puissa lapissa 1983-86
[Text] = Insect attack and blue stain in windthrown trees in Lapland in 1983-86 : научное издание / H. Saarenmaa. - Helsinki : Metsantutkimuslaitos, 1987. - 18 с. : табл., рис. - (Folia Forestalia ; № 696). - fin. - Библиогр.: с. 16-17. - ISSN 0015-5543. - ISBN 951-40-0788-3 : Б. ц.
УДК

Аннотация: Attack and reproduction of bark beetles and blue staining of timber were studied. The material comprised 357 Scots pine that were felled by autumn storms at four localities in Lapland in 1982 and 1985. Two sample bolts were taken from each tree, one from the top of sawwood portion and the other from the base. Egg galleries, their percent coverage and exit holes of bark beetles were counted and the coverage of blue stain on dissection and phloem was estimated from the sample bolts.

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06
F54

    Luontaisen ja istutetun mannyntaimen kestavyys tukkimiehentaita vastaan
[Text] = Resistance of naturally regenerated and nursery-raised Scots pine seedlings to the large pine weevil, Hylobius abietis (Coleoptera, Curculionidae) : научное издание / J. Selander, A. Immonen, P. Raukko. - Helsinki : Metsantutkimuslaitos, 1990. - 19 с. : рис., табл. - (Folia Forestalia ; № 766). - fin. - Библиогр.: с. 13-15. - ISSN 0015-5543. - ISBN 951-40-1140-6 : 5.00 р.
УДК

Кл.слова (ненормированные):
plant resistance -- natural regeneration -- reforestation

Аннотация: The susceptibility of naturally regenerated pine seedlings and nursery-grown, planted seedlings to attack by the large pine weevil was compared in a 3 year pairwise field trial. No insecticides were used. The risk of attack and seedling mortality were calculated using a logistic model.


Доп.точки доступа:
Immonen, A.; Raukko, P.
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