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1 July 2006 Response of Four Market Classes of Dry Bean (Phaseolus vulgaris) to Foramsulfuron, Isoxaflutole, and Isoxaflutole plus Atrazine Applied in Previous Years
DARREN E. ROBINSON, NADER SOLTANI, PETER H. SIKKEMA
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Abstract

Three field trials were established from 2001 to 2003 in Ontario to determine the effect of foramsulfuron POST (35 and 70 g ai/ha), isoxaflutole PRE (105 and 210 g ai/ha), and isoxaflutole plus atrazine PRE (105 1063 and 210 2126 g ai/ha) applied in the previous years to field corn on cranberry, black, kidney, and white (navy) bean. Foramsulfuron residues did not cause visible injury, or reductions in shoot dry weight or yield of dry bean 1 yr after application in corn. In contrast, visual injury across the four market classes varied from 4 to 37% 1 yr after application of isoxaflutole, and from 30 to 54% 1 yr after application of isoxaflutole plus atrazine. Isoxaflutole residues reduced shoot dry weight and yield as much as 81 and 44% in cranberry, 52 and 39% in black, 53 and 19% in kidney, and 42 and 19% in white bean, respectively. Isoxaflutole plus atrazine residues reduced shoot dry weight and yield as much as 87 and 64% in cranberry, 75 and 61% in black, 71 and 46% in kidney, and 65 and 33% in white navy bean, respectively. Injury was not detected regardless of market classes 2 yr after application of isoxaflutole alone or in tank mix with atrazine. Based on these results, it is recommended that none of the market classes of dry bean tested in this study should be grown 1 year after an application of isoxaflutole or isoxaflutole plus atrazine. A recropping interval of 2 years is currently recommended following applications of isoxaflutole or isoxaflutole plus atrazine for these market classes of dry bean.

Nomenclature: Atrazine; foramsulfuron; isoxaflutole; corn, Zea mays L.; dry bean, Phaseolus vulgaris L.

Additional index words: Black bean, carryover, cranberry bean, foramsulfuron, isoxaflutole, kidney bean, white navy bean.

Abbreviations: DAE, days after emergence; OM, organic matter; PRE, preemergence; POST, postemergence.

DARREN E. ROBINSON, NADER SOLTANI, and PETER H. SIKKEMA "Response of Four Market Classes of Dry Bean (Phaseolus vulgaris) to Foramsulfuron, Isoxaflutole, and Isoxaflutole plus Atrazine Applied in Previous Years," Weed Technology 20(3), 558-563, (1 July 2006). https://doi.org/10.1614/WT-05-075R.1
Published: 1 July 2006
JOURNAL ARTICLE
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