Soybean Objective Yield Procedures (Training Materials)

Soybean Objective
Yield Procedures

Count all blooms, dried flowers, and pods
(all shown on same plant in this picture)
on all parts of all plants within each 6-inch
section. Consider as blooms any buds which
have the white or purple petals of the flower
showing, even though they have not started
to unfold or have only partially unfolded.

Lateral branches that are counted in the 6-inch
section must have at least one leaf, one node,
and one bloom or pod.

The soybeans frame identifies the 3-foot and 6-inch sections. Count plants in each section. Additional
counts will be made in the 6-inch section.

STEP 2
Read here for 4 row
spaces - (Item 3b).

Row 5
4th Middle

Row 3

Pick up all beans and pods inside the gleaning unit outlined by the four red stakes. Do
not exclude pods which in your judgement
would pass through the combine and not be
harvested. Beans and pods missed by the
farmer during harvest will indicate harvesting losses.

3rd Middle

2nd Middle
Row 2
Row 1

4 Row Spaces

Row 4

1st Middle

STEP 1
Read here for 1 row
spaces - (Item 3a).

Dowel Stick

The width across 4 row spaces is measured from the center of the
plants in Row 1 to the center of the plants in Row 5.

CODE 5: The pods are brown and open easily.

CODE 2: This covers all plant growth stages

The beans have shrunk inside the pods. Most or
all of the leaves have been shed by the plants.

until the pods are full. All leaves will still be
green. Flowers may or may not be present.

CODE 3: The leaves are turning yellow on

Count all nodes on the main stems of the plants inside
the 6-inch row section. Several nodes may be found
at the top of the main stem; count as many of these
as you can without taking the tip apart. In a few rare
cases, the main stem may fork and form two main
stems; if this occurs, treat them both as the main stem.

nearly all plants, although green leaves may
still be more numerous. Most pods are full and
some are ripening.

CODE 4: Leaves have turned yellow and

some have fallen. The pods are full size and are
going from green to brown, but many pods will
still be green. Beans are not firm and have not
completely shrunk inside the pods.

The first and last plants of the 6-inch row section are marked with red plastic ties or flagging
ribbon. Count all soybean plants inside this
section, regardless of their size or physical
condition.