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1 May 2005 Responses of Dry Beans to Flumioxazin
NADER SOLTANI, STEPHEN BOWLEY, PETER H. SIKKEMA
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Abstract

There is little information on the sensitivity of dry beans to flumioxazin. Tolerance of eight cultivars of dry beans representing four market classes (black, cranberry, kidney, and white beans) to preplant incorporated (PPI) and preemergence (PRE) applications of flumioxazin at the rate of 52.5, 70, and 140 g ai/ha were studied in three field experiments in Ontario in 2002 and 2003. There were no differences (P < 0.05) between two cultivars within a market class in their responses to flumioxazin. However, the four market classes differed in their responses to flumioxazin. Black and white beans were more sensitive to the PRE application of flumioxazin than cranberry and kidney beans. Flumioxazin applied PRE at 140 g/ha caused as much as 34% visual injury and reduced plant height by 23 to 28%, shoot dry weight by 35 to 39%, and yield by 20 to 30% in black and white bean market classes. Flumioxazin-applied PPI did not injure any market class. On the basis of this research, there is an acceptable margin of crop safety in these black and white bean cultivars only when flumioxazin is applied PPI. The two cranberry and kidney bean cultivars were tolerant to all rates of flumioxazin applied both PPI and PRE.

Nomenclature: Flumioxazin; black bean, cranberry bean, kidney bean, navy bean, white bean, Phaseolus vulgaris L.

Additional index words: Dry beans, herbicide tolerance, preemergence herbicides, preplant incorporated herbicides.

Abbreviations: DAE, days after emergence; OM, organic matter; PPI, preplant incorporated; PRE, preemergence.

NADER SOLTANI, STEPHEN BOWLEY, and PETER H. SIKKEMA "Responses of Dry Beans to Flumioxazin," Weed Technology 19(2), 351-358, (1 May 2005). https://doi.org/10.1614/WT-04-146R1
Published: 1 May 2005
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