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Book 1994

Autor: Pastor Corrales, Marcial A. Schwartz, Howard F.
Enlace original: https://cgspace.cgiar.org/handle/10568/54529

Investigación en Agricultura
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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
Book 1978

Autor: Schwartz, Howard F. Gálvez E., Guillermo E. Schoonhoven, Aart van Howeler, Reinhardt H. Graham, Peter H. Flor Montoya, Carlos A.

A description is given of the different factors limiting to bean production in Latin America, type of damage caused, environmental conditions where they prevail, and possible control measures. With regard to diseases, the following are discussed: aphid-, whitefly- and beetle-transmitted viruses, ...

Se presenta una descripcion de los diferentes factores que limitan la produccion de frijol en Latinoamerica, el tipo de dano causado, condiciones ambientales donde estos prevalecen, y posibles medidas de control. Se examinan las siguientes enfermedades: virus transmitidos por afidos, mosca blanca...

Enlace original: https://cgspace.cgiar.org/handle/10568/77898

Investigación en Agricultura
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Schwartz, Howard F. ,  Gálvez E., Guillermo E. ,  Schoonhoven, Aart van ,  Howeler, Reinhardt H. ,  Graham, Peter H. ,  Flor Montoya, Carlos A. ,  [Field problems of beans in Latin America] ,  Field problems of beans in Latin America
Book Chapter 1989

Autor: Schwartz, Howard F.

Among the bacterial diseases that attack beans are halo blight (Pseudomonas syringae pv. phaseolicola), which is distributed worldwide and survives in infected seeds and plant residue on the soil surface. Three to five days after infection, small water- soaked spots appear on the lower leaf surfa...

Entre las enfermedades bacterianas que atacan el frijol esta el anublo de halo (Pseudomonas syringae pv. phaseolicola) que se encuentra presente en todo el mundo; sobrevive en semillas infectadas y en residuos vegetales. Tres a 5 dias despues de la infeccion aparecen manchas acuosas en el enves d...

Enlace original: https://cgspace.cgiar.org/handle/10568/81825

Investigación en Agricultura
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Schwartz, Howard F. ,  [Halo blight] ,  Halo blight
Book Chapter 1989

Autor: Schwartz, Howard F. Morales, Francisco José

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/81833

Investigación en Agricultura
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Schwartz, Howard F. ,  Morales, Francisco José ,  [Seed pathology] ,  Seed pathology
Journal Article 1987

Autor: Garrett, K.A. Schwartz, Howard F.

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/88618

Investigación en Agricultura
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Garrett, K.A. ,  Schwartz, Howard F. ,  [Research on pseudomonas bacterial epiphytes in Colorado] ,  Research on pseudomonas bacterial epiphytes in Colorado
Journal Article 1987

Autor: Legard, D.E. Schwartz, Howard F.

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/44118

Investigación en Agricultura
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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
Journal Article 1986

Autor: Legard, D.E. Schwartz, Howard F. Garrett, K.A.

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/88582

Investigación en Agricultura
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Legard, D.E. ,  Schwartz, Howard F. ,  Garrett, K.A. ,  [Pseudomonad bacterial epiphyte studies in Colorado] ,  Pseudomonad bacterial epiphyte studies in Colorado
Journal Article 1982

Autor: Steadman, James R. Schwartz, Howard F.

High incidence of Uromyces phaseoli and Pseudomonas syringae pv. phaseolicola was reported in Pinto and Great Northern bean fields in SW Nebraska and NE Colorado (USA) in 1981. Pinto beans showed other symptoms that, after isolation and tests, were found to be caused by P. syringae pv. syringae. ...

Enlace original: https://cgspace.cgiar.org/handle/10568/88505

Investigación en Agricultura
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Steadman, James R. ,  Schwartz, Howard F. ,  [Rust and halo blight epidemics, and the first report of bacterial brown spot in western Nebraska and eastern Colorado] ,  Rust and halo blight epidemics, and the first report of bacterial brown spot in western Nebraska and eastern Colorado

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