36,630 research outputs found
Interrelations between citrus rust mite, Hirsutella thompsonii and greasy spot on citrus in Surinam
No full textCounts of citrus rust mite (Phyllocoptruta oleivora (Ashm.)) on leaves and fruit of citrus rose to a peak in the two dry seasons, the build up taking 4-5 weeks. It then decreased partly through infection by the entomogenous fungus Hirsutellathompsonii Fisher and partly through a decline in feed quality. The low counts in the wet seasons were associated with rain rather than humidity, temperature or infections by H. thompsonii. Spraying with suspensions of fragmented mycelium of H. thompsonii (mass concentration 0.5-1.0 g litre -1) prevented the build up of citrus rust mite.The severity of greasy spot (Stenella sp.) was positively correlated with counts of citrus rust mite. Defoliation of citrus trees after greasy spot infection was associated with high counts of mite.Control of citrus rust mite (with chlorobenzilate: mass concentration of a.i. 2 g litre -1at 500 litre ha -1) was warranted when 25% of fruit or 15% of leaves bore at least one mite per lens field (1.5 cm 2). Greasy spot could be controlled by preventing build-ups of citrus rust mite
Sources of resistance to yellow rust and stem rust in wheat-alien introgressions
No full textWheat is the staple food and the main source of caloric intake in most developing countries, and thereby an important source in order to maintain food security for the growing populations in those countries. Stem rust Puccinia graminis f. sp. tritici, and yellow rust P. striiformis f. sp. tritici of wheat continues to cause severe damage locally and globally, thereby contributing to food insecurity. In this paper biology and taxonomy of stem rust and yellow rust, breeding for resistance, utilization of resistance sources from different gene pools, molecular characterization and genetic dissection of resistance to rusts are discussed
Music in the Museum with Dr. Roberta Rust
No full textDr. Roberta Rust, Professor of Piano at Lynn University’s Conservatory of Music, performs at the Boca Raton Museum of Art on February 21, 2021. This performance spans the 18th, 19th, and 20th centuries featuring works by Wolfgang Amadeus Mozart, Ludwig van Beethoven, Roy Harris, and Elie Siegmeister. The concert will be filmed and available to view on March 17, 2021
Dr. Roberta Rust: Music in the Museum Performance - Jardins sous la pluie
No full textDr. Roberta Rust, Professor of Piano, performs Jardins sous la pluie from Estampes by Claude Debussy, 1903. Performed at the Boca Raton Museum of Art as part of its series Music in the Museum from a Distance, among the exhibit, Edward Steichen: In Exaltation of Flowers
Dr. Peyton Nalle Rhodes
No full textArtwork photographed and inventoried by the 2015 Summer Art Inventory team in the Visual Resources Center.This is a relief portrait of Peyton Nalle Rhodes. It is very textures and is hanging on the wall. There is a plaque beside the sculpture that reads “Dr. Peyton Nalle / Rhodes / 1900-1984 / President of the / College / 1949-1965 / Relief portrait by / Ted Rust / The gift of / Mr. and Mrs. / Author Fulmer, Jr./ Mr. and Mrs / Robert McCallum, / Mr. and Mrs. / Michael McDonnell / October 17, 200
Dr. Roberta Rust: Music in the Museum Performance - Clair de Lune
No full textDr. Roberta Rust, Professor of Piano, performs Clair de lune from Suite bergamasque by Claude Debussy, 1905. Performed at the Boca Raton Museum of Art as part of its series Music in the Museum from a Distance, among the exhibit, Edward Steichen: In Exaltation of Flowers
Rust, Thomas (Death, 1869-02-19)
No full textAddress: 165 PleasantAge at death: 5 mos.298/Pg.119/1869/M W S/Cincinnati/Dr. (Conrad Rust, Father)/Wuest & Meyers, FH/Walnut HillsOriginal record filed in drawer labeled 'Runk-Ryan'
An ecophysiological approach to crop losses exemplified in the system wheat, leaf rust, and glume blotch
No full textThe motive of the author to embark upon the research reported here was the need to develop new concepts to approach the problem of crop losses, and eventually the problem of their prevention by means of disease control and plant breeding. The introduction of ecophysiology as an approach, explained above, was the first result. An ecophysiological treatment of processes like growth and development of plants in health and disease necessitates adjustments of current thoughts on experimental techniques and on organization in research (Van der Wal and Cowan, 1974).In order to measure plant or aegricorpus responses concurrently with environmental factors in climate chamber and field experiments during periods Of months, a great variety of instruments had to be bought, modified, or devised. The climate chamber had to be adjusted to allow for high light intensities with a view to growing wheat under conditions approximating those of early summer in the Netherlands; the yield of the spring wheat 'Kolibri' was c. 0.5 kg.m -2, which is nearly equivalent to the average field production of the country. Regulations for the prevention and control of contamination by aphids and mildew without any use of chemicals were issued after detailed experimentation (Van der Wal, unpubl.). Several instruments have been developed, usually with the help of others; this has led to two publications (Schurer and Van der Wal, 1972; Tegelaar and Van der Wal, 1974). These efforts resulted in the experimental designs described in the appendix. Field experiments, conducted in the same period as the climate chamber experiments reported here, will be published later. It is felt that the techniques to record growth of pathogens are still inadequate.The results reported in the appendix show that the 'state' of the plant at the time of infection is a major determinant of the plant's future behaviour, which plant breeders and pathologists can express in terms of resistance and tolerance. The conceptual framework presented above may contribute to a future revision of crop husbandry and crop protection practices
Dr Robert King author
No full textDr. Robert King is pictured at the medical office on display at the Bishop Museum. King was the author of "A history of the practice of medicine in Manatee County, Florida", published in 1985. He was also a past president of the Manatee Historical Society
Rust (Birth, 1880-11-06)
No full textAddress: Eastern Ave.7005/Pg.69/1880/F W/U.S./U. S./Dr. CarverOriginal record filed in drawer labeled 'Runk-Ryan'
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