Only herbicides currently registered for use on soybeans were used in these studies, with strict adherence to all label instructions. Seed of all private entries were supplied by the participating companies. All seeds were packaged for planting at the rate of 7 seeds per foot of row. Plots were planted with a cone planter. Bags of harvested seed were allowed to dry at ambient temperature to a uniform moisture content before weighing.
Maturity is considered to be the date when the pods are dry and most of the leaves have dropped.
Under most conditions, the stems are also dry. Plants were measured from the soil to the top extremity, at maturity, and plant height was recorded as the average of the height of plants measured.