During the past three years (2004-06) at the
NDSU Carrington Research
soybean varieties with relative maturity 0.0 and 0.5 were monitored during the
growing season to determine days required for plants to reach selected growth
stages. The objective of the work was to develop a table as a quick reference
to estimate time required for soybean to reach a certain stage for management
purposes (e.g. proper timing for application of crop protection products).
Below is a table that contains the
currently-compiled soybean plant development data. The data is listed by year
and relative maturity, three-year averages by relative maturity, and three-year
average across relative maturities.