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Pastor Corrales, Marcial A.Schwartz, Howard F.[Problemas de producción del frijol en los trópicos]Problemas de producción del frijol en los trópicos

Seeds provide an efficient method for disseminating pathogenic organisms to different locations; more than 50 percent of the major bean diseases are seed borne. Mechanical damage, which may occur during harvesting, threshing and/or planting can affect seed viability, germination, and result in co...

La semilla constituye un metodo eficiente de diseminacion de organismos fitopatogenos a diversas localidades; mas de 50 por ciento de las principales enfermedades del frijol son transmitidas por la semilla. El dano mecanico que ocurre durante la cosecha, trilla y/o siembra tambien puede afectar l...


Schwartz, Howard F.Morales, Francisco José[Seed pathology]Seed pathology
Hill, J.P.Schwartz, Howard F.Salgado, M.Farrera, R.E.[Effects of sub-lethal applications of propiconazole on bean rust]Effects of sub-lethal applications of propiconazole on bean rust

In 1986, 5 commercial bean sites near Holyoke (Colorado, USA) were treated with 4 sprays of cupric hydroxide every 7 to 10 days beginning at least 2 wk. before flowering to (1) sample for the presence of Cu resistance in naturally-occurring epiphytic populations of Pseudomonas syringae pv. syring...


Garrett, K.A.Schwartz, Howard F.[Research on pseudomonas bacterial epiphytes in Colorado]Research on pseudomonas bacterial epiphytes in Colorado

Investigations during 1984 and 1985 demonstrated that Pseudomonas syringae pv. phaseolicola (Psp) and Pseudomonas syringae pv. syringae (Pss) occur as epiphytes on dry beans in Colorado. Populations of syringae-type pseudomonads (STPs) were detected on volunteer bean plants throughout northeaster...


Legard, D.E.Schwartz, Howard F.[Sources and management of Pseudomonas syringae pv. phaseolicola and Pseudomonas syringae pv. syringae Epiphytes on dry beans in Colorado]Sources and management of Pseudomonas syringae pv. phaseolicola and Pseudomonas syringae pv. syringae Epiphytes on dry beans in Colorado

Results of the research on beans carried out by the Dept. of Plant Pathology and Weed Science of Colorado State U. (USA) are briefly summarized. Surveys in the spring of 1984 and 1985 found many wild beans infected with, and/or colonized by, populations of Pseudomonas syringae pv. phaseolicola an...


Legard, D.E.Schwartz, Howard F.Garrett, K.A.[Pseudomonad bacterial epiphyte studies in Colorado]Pseudomonad bacterial epiphyte studies in Colorado

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