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  • 1
    Digitale Medien
    Digitale Medien
    Modeling Stochastic Processes in Plant Pathology (1994)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Phytopathology 32 (1994), S. 523-544 
    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.32.090194.002515
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  • 2
    Digitale Medien
    Digitale Medien
    The Separation of Eggs of Erioischia brassicae and E. floralis in Swede Crops (1972)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 21 (1972), S. 0 
    Details
    ISSN: 1365-3059
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Eggs collected from around the base of cultivated cruciferous crops in north-east Scotland were hatched on suitable media contained in petri dishes, or on plants grown in pots in an outdoor insectary. Breeding in petri dishes was more successful.It was found that Erioischia brassicae(Bouche), the cabbage root fly, and E. floralis(Fall.), the turnip root fly, occur together in swede crops, but only E. brassicae in crops of cabbage and cauliflower. Despite the eggs of both species overlapping in size and the chorion patterns being indistingtiishable, plotting mean egg sizes over short consecutive periods showed that the main egg-laying period of E. floralis was during August and September.The measurements of eggs collected before and after 1 August, when plotted on arithmetical probability paper, indicated an appreciable difference in the average size of eggs laid in the two periods, but only at those sites where both species were found.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-3059.1972.tb01714.x
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  • 3
    Digitale Medien
    Digitale Medien
    The Role of Mites in the Transmission of Smoulder in Narcissus (1975)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 24 (1975), S. 0 
    Details
    ISSN: 1365-3059
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Infection by Sclerotinia narcissicola Greg, was observed in narcissus bulbs during autumn, in leaf initials colonized by bulb scale mites (Steneotarsonemus laticeps (Halb.)), and on lesions of varying extent on the corresponding tissue after emergence.Presence or absence of smoulder sclerotia on outer scales of bulbs was not related to the incidence of infection of shoots.There was no evidence that smoulder was reduced by treatment for control of bulb mites (Rhizoglyphus echinopus (Fum. & Rob.)).
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-3059.1975.tb01872.x
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  • 4
    Digitale Medien
    Digitale Medien
    Damage to potato foliage by Sminthurus viridis (L.) (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 32 (1983), S. 0 
    Details
    ISSN: 1365-3059
    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.1365-3059.1983.tb02864.x
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  • 5
    Digitale Medien
    Digitale Medien
    UNUSUAL FROST INJURY TO WINTER SOWN WHEAT AND BARLEY (1966)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 15 (1966), S. 0 
    Details
    ISSN: 1365-3059
    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.1365-3059.1966.tb00328.x
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  • 6
    Digitale Medien
    Digitale Medien
    Factors determining the severity of epidemics of Mycosphaerella graminicola (Septoria tritici) on winter wheat in the UK (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 42 (1993), S. 0 
    Details
    ISSN: 1365-3059
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Epidemics of disease caused by Septoria tritici were studied in detail in 11 crops of winter wheat cv. Longbow over 4 years. Serious damage to the uppermost two leaf layers was caused by splash-borne infection from lower in the crop early in the life of the leaves, followed by one or rarely two cycles of multiplication within a leaf layer. Infection conditions rarely limited damage, even in a dry year; the timing and, to a lesser extent, amount of initial inoculum movement to an upper leaf layer was of greater importance. Timing of initial infection was determined by when rain splash occurred in relation to emergence of a leaf layer. Occurrence of infections soon after a leaf layer started to emerge allowed more time for multiplication of disease within that layer. These infections tended to be more severe because the leaves were closer to inoculum sources within the crop. Slight differences in phenology between locations explain why initially random disease distributions sometimes become aggregated. Early-sown crops are at greater risk because they mature more slowly, allowing more disease multiplication and better transfer between leaf layers.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-3059.1993.tb02674.x
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  • 7
    Digitale Medien
    Digitale Medien
    Interacting effects of interrupted humid periods and light on infection of wheat leaves by Mycosphaerella graminicola (Septoria tritici) (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 40 (1991), S. 0 
    Details
    ISSN: 1365-3059
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Septoria tritici conidia require a long period at 100%, humidity to infect wheat plants successfully. When periods of 100% relative humidity were interrupted by up to 48 h at 75% relative humidity, infection by S. tritici on winter wheat cvs Longbow and Avalon was only slightly reduced. Breaks at 50% relative humidity had larger effects, but still allowed infection to occur. Infection was reduced more by a break in humidity which began in the light, but previous and subsequent light regimes strongly influenced the final outcome in all cases. When a wet period was interrupted twice, the two dry breaks interacted strongly under some circumstances; in these cases the probability of infection was much greater than expected from multiplying the effects of the single breaks. Under other conditions two breaks had more nearly multiplicative effects, or interacted to reduce the probability of infection below that expected from the individual breaks. There was evidence that light reduced the probability of successful infection earls in the infection process, but stimulated it later. The data were consistent with infection occurring faster on cv. Longbow, but otherwise being affected in qualitatively similar ways on both cultivars. The complexity of the effects and their interactions suggests that it will not be possible to find a simple set of infection conditions to apply in the field. The data rule out a number of simple mathematical models of the infection process.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-3059.1991.tb02424.x
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  • 8
    Digitale Medien
    Digitale Medien
    COMPARISON OF ALDRIN AND BHC FOR THE CONTROL OF CARROT FLY (1955)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 4 (1955), S. 0 
    Details
    ISSN: 1365-3059
    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.1365-3059.1955.tb00725.x
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  • 9
    Digitale Medien
    Digitale Medien
    Effects of temperature, leaf wetness and cultivar on the latent period of Mycosphaerella graminicola on winter wheat (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 39 (1990), S. 0 
    Details
    ISSN: 1365-3059
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: After inoculation of winter wheat cv. Longbow at a single time, lesions of M. graminicola were produced over a long interval starting 15–35 days after inoculation, dependent on temperature. There was no evidence that a single infection gave rise to more than one lesion. After the initial infection period at 100% relative humidity (r.h.), keeping leaves wet for c. 10 h per day did not shorten latent period on seedlings. Experiments in controlled-environment chambers demonstrated a minimum latent period at approximately 17°C Variation in the latent period of individual lesions was also minimum at this temperature. The latent period varied among the cultivars tested, cv. Longbow having the shortest, cv. Avalon having almost the longest. Field observations broadly confirmed the results of experiments in constant-environment chambers.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-3059.1990.tb02501.x
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  • 10
    Digitale Medien
    Digitale Medien
    Spatial distributions of Septoria nodorum and S. tritici within crops of winter wheat (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 36 (1987), S. 0 
    Details
    ISSN: 1365-3059
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: In some crops of winter wheat selected from a range monitored in Western Europe during 1981-83, Septoria nodovum and S. tritici were spatially very uniformly distributed from the beginning of the growing season onwards. A cube root transformation produced a constant variance in lesion numbers per leaf, similar for both pathogens at about 0.5. This permits the sample size needed for a given accuracy to be estimated. Counts of conidia washed from leaves by a standard procedure had a constant coefficient of variation, independent of disease level. Large samples would be necessary for accurate counts, particularly if leaves from different layers were examined separately. The pattern of lesion numbers on leaves was best described by a negative binomial distribution: this predicts an incidence-severity curve to which the data conformed closely. Hence incidence estimates can be used to estimate severity, which may be more economical of sampling effort. Correlations between lesion counts on different leaves of the same tiller were negative and highly significant for S. nodorum in 1982, but positive and significant for S. tritici in 1983. The causes of this difference are unknown.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-3059.1987.tb02181.x
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