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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

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. ...


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

Bronzing was observed in many of the bean trials conducted at Fort Collins (Colorado, USA) during 1982 to study the influence of water and shading stress on photosynthesis and protein content of 3 dry bean var., Roza, Pinto U.I. 111, and Olathe. Bronzing symptoms appeared during the late flowerin...


Schwartz, Howard F.Ballarin, M.Riggle, R.L.[Shade, irrigation and variety effects upon bronzing responses of dry beans in Colorado]Shade, irrigation and variety effects upon bronzing responses of dry beans in Colorado
McMillan, M.S.Vaughn, M.R.Schwartz, Howard F.[Occurrence of the perfect stage of bean rust in Colorado]Occurrence of the perfect stage of bean rust in Colorado

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