Funded by the Illinois Soybean Association checkoff program.

Shaun Casteel

Diagnostics: Pale green soybeans persisting?

We can often scout or drive past field after field of soybean in June that are pale green to yellowish in color. The soybeans look pitiful and plum pathetic. Soybeans are usually going through the awkward stage of life during June. They are growing faster than nitrogen can be supplied from soil (residual N and mineralization of organic matter), cotyledons, and developing nodules. Soybeans usually encounter this rapid growth and limited N supply between V2 to V3 growth stages (2 to 3 unrolled trifoliates). Soybeans in the picture above are encountering N limitation earlier (V1, one unrolled trifoliate) due [...]

By |July 1, 2014|
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