This article looks at nitrogen utilization by snap beans grown in the Willamette Valley of Oregon and provides information necessary to make N fertilizer timing and rate decisions to maximize N uptake while minimizing environmental losses.
A number of growers and agricultural professionals have asked me whether we are seeing resistance to mold in snap beans to our currently registered fungicides. The short answer is, not to my knowledge. In a normal year, the primarily threat to snap beans is white mold (Sclerotinia sclerotiorum). When we have a cool, wet spring, we see both white mold and gray mold (Botrytis cinerea). Gray mold is a game changer. Gray mold control requires a tank mix, early timing, and a two spray program.
Selman, L., N. Andrews, A. Stone, A. Mosley. 2008. What's wrong with my potato tubers? Diagnosing tuber abnormalities in western Oregon and Washington. Oregon State University Extension EM 8948-E. Corvallis, OR.