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Showing 1 to 20 of 39 for “"scab"”.
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Endophytic Actinomycetes as potential agents to control common scab of potatoes
… upon infection by a pathogen, <em>Streptomyces scabies.</em> Current disease control consists of expensive irrigation systems and using hazardous chemicals, which exert limited disease control and are potential hazards to those exposed. Biological control offers a cost effective method for …
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EVALUATION OF SCAB RESISTANCE QUANTITATIVE TRAIT LOCI (QTL) EFFECTS ON WHEAT
Fusarium Head Blight (FHB) of wheat (<italic>Triticum aestivum</italic>), caused by <italic>Fusarium graminearum</italic>, is a disease that periodically strikes the mid-Atlantic region of the USA. Breeding for resistant wheat cultivar is an effective method of disease control. McCormick, a …
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A space for conflict : the scab acts of the Cape Colony, circa 1874-1911
… who protested against the promulgation of anti-scab legislation presented their opinions of the disease in a slew of letters to the press and in testimonies before various scab commissions. Although the farmers' beliefs about scab were heterogeneous, they contained elements of an environmental …
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Epidemiological studies on primary inoculum of Venturia inaequalis and V. asperata for apple scab management
Apple scab, caused by the ascomycete Venturia inaequalis, is the most important disease of apple, causing great losses worldwide. Its management is largely based on fungicide treatments, especially targeting ascosporic infections. To reduce the pesticide input, sanitation practices against …
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Quantification and characterization of the Streptomyces complex causing common scab of potatoes in South Africa
Common scab is a disease that results in corky lesions on the surface of potatoes. These lesions can be variable in size, shape and as a result of secondary infection may appear extremely cryptic. The disease is caused by Streptomyces, a group of Actinomycetes that are largely saprophytic. For this …
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Genetic Analysis and Marker -Assisted Selection of Scab Resistance QTL in Bread Wheat (Triticum Aestivum L.)
Wheat head scab is a very destructive fungal disease. Based on the mapping data of 700 AFLP and SSR markers in a population of 133 recombinant inbred lines (RILs) derived from Ning7840/Clark, three chromosomal regions associated with scab resistance were detected in a common cultivar, Ning7840. …
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Physiological and ultrastructural effects of sterol-inhibiting fungicides on apple leaves and the apple scab fungus
The effects of sterol-inhibiting fungicides (SIFs) on the free sterol and free fatty acid composition of apple leaves of Red Delicious and Jonathan cultivars were examiried over a 2 year period. Trees were treated in mornings vs evenings throughout each season and samples collected after 24 and 72 …
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Plant Medicine: The Use of Medicinal Plants as Green Manures in the Treatment of Streptomyces scabies Infection and Potato Scab Disease
<p>Potato scab disease is caused by the pathogen <em>Streptomyces</em> <em>scabies</em> and leads to significant crop losses annually worldwide. There is growing public and scientific concern regarding the human and environmental safety with the use of many pesticides and current disease control …
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THE APPLE SCAB DILEMMA: FROM STRATEGIES TO COPE WITH Venturia inaequalis DAMAGES TO THE RISK OF THE EMERGING PATHOGEN Venturia asperata ON RESISTANT APPLE CULTIVARS
Apple scab, caused by Venturia inaequalis, is the most significant disease affecting apple trees. It can negatively impact both plant growth and fruit quality, both in the orchard and during postharvest storage. Various approaches can be employed to mitigate its effects. The experimental activity …
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Evaluation of rootstock and crop load effects on the performance of `Gibson Golden Delicious' and three scab-resistant apple cultivars
… Golden Delicious' apples' and three apple scab-resistant cultivars (Redfree, Liberty, and GoldRush).</p> <p>Two field research studies were conducted at the Iowa State Horticulture Research station near Ames, Iowa. The first experiment was conducted in an established `Gibson Golden …
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DISPERSAL GRADIENTS AND DEPOSITION EFFICIENCY OF VENTURIA INAEQUALIS ASCOSPORES AND THEIR RELATIONSHIP TO LESION DENSITIES (APPLE SCAB DISEASE, SPORE DISPERSAL, TRAPPING)
… of the primary season. The percentage of scabbed fruit on trees unprotected with fungicide prior to pink bud phase was not statistically greater than on trees protected for the entire primary scab season. On potted McIntosh seedlings placed in the orchard, the relationship was described by …
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PREDICTING POTENTIAL ASCOSPORE DOSE OF VENTURIA INAEQUALIS (CKE) WINT IN COMMERCIAL APPLE ORCHARDS OF NEW HAMPSHIRE (MODELING, EPIDEMIOLOGY, DISEASE MANAGEMENT)
… orchards. PAD was calculated as the product of scab lesions per m('2) leaf tissue at leaf fall, pseudothecia per lesion, asci per pseudothecium, the proportion of the orchard floor covered by leaf litter at bud break, and ascospores per ascus. Disease incidence and the proportion of lesions that …
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Spatial Dimensions of Economic Valuation: A Comparison of Hedonic Models
… alternative models. Aggregate benefits for the SCAB region from a 0.1 ppb reduction in OZ levels add up to about 8 billion dollars if multiplier effects are taken into account in a nonlinear model. Even if only direct effects are considered, aggregate benefits sum up to 5 billion dollars.
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Economic injury levels and feeding studies for the potato flea beetle, Epitrix cucumeris (Harris), in Manitoba
… was weighed, graded and examined for common scab, Streptomyces scabies (Thaxter). Without early season injury by Colorado potato beetle, plant had no yield loss up to 290 flea beetles per plant; above this density, yield was inversely proportional to flea beetle density. The level of economic …
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Generation and application of recombinant antibody fragments for prostate cancer detection.
… and expressed as single chain antibodies (scAb). This construct greatly enhanced soluble protein expression and stability while also facilitating the rapid kinetic analysis of candidate antibodies by Biacore. A differential expression profile of an anti-fPSA scFv and reformatted scAb was …
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