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  • 1
    Digitale Medien
    Digitale Medien
    James Edward Vanderplank: Maverick* and Innovator (1988)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Phytopathology 26 (1988), S. 31-37 
    Details
    ISSN: 0066-4286
    Quelle: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Biologie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1146/annurev.py.26.090188.000335
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  • 2
    Digitale Medien
    Digitale Medien
    On the Spread of Plant Disease: A Theory on Foci (1994)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Phytopathology 32 (1994), S. 503-521 
    Details
    ISSN: 0066-4286
    Quelle: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Biologie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1146/annurev.py.32.090194.002443
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  • 3
    Digitale Medien
    Digitale Medien
    Methodology of Epidemiological Research (1972)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Phytopathology 10 (1972), S. 253-276 
    Details
    ISSN: 0066-4286
    Quelle: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Biologie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1146/annurev.py.10.090172.001345
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  • 4
    Digitale Medien
    Digitale Medien
    On the Conceptual Basis of Crop Loss Assessment: The Threshold Theory (1985)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Phytopathology 23 (1985), S. 455-473 
    Details
    ISSN: 0066-4286
    Quelle: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Biologie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1146/annurev.py.23.090185.002323
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  • 5
    Digitale Medien
    Digitale Medien
    Transmission and overseasoning of Diaporthe adunca on Plantago lanceolata (1996)
    Oxford, U.K. and Cambridge, USA : Blackwell Science Ltd
    Plant pathology 45 (1996), S. 0 
    Details
    ISSN: 1365-3059
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: To obtain a better understanding of the onset and the progress of epidemics caused by Diaporthe adunca on Plantago lanceolata we investigated the role of the asexual phase of the fungus not only in the transmission of the disease from season to season, but also in the spread of the fungus within the same season. Splash dispersal of conidia during rain episodes proved to be an effective method for the spread of the fungus. Conidial production by pycnidia present on scapes left on the ground during winter was delayed in comparison to that of pycnidia produced on greenhouse infected scapes, indicating that the fungus overwinters with immature pycnidia. Latent infections occurred in 8.3% of the seedlings which emerged from seeds originating from infected spikes. A scenario for the transmission and spread of the fungus is proposed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1046/j.1365-3059.1996.d01-92.x
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  • 6
    Digitale Medien
    Digitale Medien
    A decimal code for the growth stages of cereals (1974)
    Oxford, UK : Blackwell Publishing Ltd
    Weed research 14 (1974), S. 0 
    Details
    ISSN: 1365-3180
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-3180.1974.tb01084.x
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  • 7
    Digitale Medien
    Digitale Medien
    Resistance to Sphaerotheca pannosa in roses induced by 2,6-dichloroisonicotinic acid (1996)
    Oxford, U.K. and Cambridge, USA : Blackwell Science
    Plant pathology 45 (1996), S. 0 
    Details
    ISSN: 1365-3059
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: The susceptible rose cv. Madelon and the partially resistant cv. Sonia both responded with reduced development of rose powdery mildew when they were treated with the synthetic inducer 2,6-dichloroisonicotinic acid (INA). The EC50 for number of colonies cm−2 was approximately 0.4 mg L−1 in both cultivars when treated 4 days prior to inoculation. However, conspicuous differences were observed with respect to number of spores per cm2. For sporulation, the EC50 was 0.37 mg L−1 in cv. Madelon and only 0.08 mg L−1 in cv. Sonia. A comparison with the pathosystems cucumber/Sphaerotheca fuliginea and red cabbage/Peronospora parasitica is made and the importance of the observed phenomenon for the selection of parents in a breeding programme for (partial) resistance is discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1046/j.1365-3059.1996.d01-180.x
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  • 8
    Digitale Medien
    Digitale Medien
    Focus expansion of bean rust in cultivar mixtures (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 44 (1995), S. 0 
    Details
    ISSN: 1365-3059
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Radial expansion of foci in mixtures of susceptible and resistant bean cultivars was studied at two sites in Ethiopia. The foci expanded in a wave-like fashion. At Ambo (1990), radial expansion velocity ranged from 6 cm per day in mixtures with 20% susceptible plants to 15 cm per day in plots with the susceptible plants only. At Debre Zeit, the velocity ranged from 3 cm per day in a mixture with 20% susceptible plants to 16 cm per day in plots with 100% susceptible plants. At both sites the radial expansion velocity of foci correlated linearly with the logarithm of the fraction of susceptible plants in the mixture. Velocities of focus expansion at Ambo and Debre Zeit were approximately equal in plots consisting of susceptible plants only. At lower proportions of susceptible plants the velocities at Debre Zeit were lower than at Ambo. Indications were given as to the environmental factors responsible for the observed difference between sites. At each site, the variation between plots showed a clear spatial pattern, probably due to environmental factors.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-3059.1995.tb01672.x
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  • 9
    Digitale Medien
    Digitale Medien
    Effect of rust (Uromyces viciae-fabae) on yield components of faba bean (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 44 (1995), S. 0 
    Details
    ISSN: 1365-3059
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Epidemics of faba bean rust (Uromyces viciae-fabae) differing in duration and final severity were induced by a point inoculation. Relationships between disease severity observed on three canopy layers (top, middle and bottom) at different assessment dates and yield components (grain weight per stem, average grain weight, number of grains per pod and number of pods per stem) were established. Epidemics occurring after the initiation of pod setting had no effect on yield components. Earlier epidemics significantly decreased the grain weight per stem, the average grain weight, and the number of pods per stem, but only marginally affected the number of grains per pod. The yield components generally decreased with increasing severity level, but a few parabolic relationships were observed at a late stage in crop development. The effect of rust on yield components could be predicted by a critical point model using disease severity assessed on the middle or bottom canopy layer in the mid-flowering stage. Rust severity greater than 5% during that critical stage would substantially decrease final yield, and fungicide spraying against rust would be advised.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-3059.1995.tb01691.x
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  • 10
    Digitale Medien
    Digitale Medien
    Phytophthora infestans's 10-year truce with Holland: a long-term analysis of potato late-blight epidemics in the Netherlands (2002)
    Oxford, UK : Blackwell Science Ltd
    Plant pathology 51 (2002), S. 0 
    Details
    ISSN: 1365-3059
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: A sequence of 47 potato late-blight (Phytophthora infestans) epidemics in the Netherlands, from 1950 to 1996, was analysed using agronomic and meteorological variables. The intensity of annual epidemics was characterized by an index of disease intensity (DI, 0 = absence of late blight; 4 = severe epidemic). Three periods were identified, with average DIs of 2·9, 0 and 2, respectively. Period I (1950–68) had relatively regular epidemics; period II (1969–78) was virtually blight free; and period III (1979–96) showed large variations in disease intensity. Disease-enhancing factors were number of days with precipitation, and number of hours with temperatures between 10 and 27°C and relative humidity 〉90% during the growing season. Limiting factors were number of hours with temperatures 〉27°C, and amount of global radiation. Linear discriminant analysis of DI using the blight status of the previous year and meteorological variables correctly classified up to 40 years out of 47 (87·0%), with five out of the six incorrectly classified years falling in period III. Blight status of the previous year and number of days with precipitation were important discriminating variables.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1046/j.1365-3059.2002.00738.x
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