AGCO Glencoe CC4450, Operator'S Manual

Page: 17 / 37

OPERATION
MEASURING CROP RESIDUE
Line-Transect Method
Use the following procedure to determine the
percentage of residue on the field.
1. Select a measuring tool:
- 100’ tape
- 100’ rope or string marked at 1’ intervals
- 50’ tape
- 50’ rope or string marked at 6" intervals
2. Stretch measuring tool (tape/rope/string)
diagonally (30° - 45°) across crop rows,
covering two or more implement passes.
3. Look directly down on same side of measuring
tool at each mark without moving tool.
- Count all pieces of residue,
1
8
" diameter or
larger, under each mark (Figs. 20, 22).
- Do not count residue pieces smaller than
1
8
"
diameter or pieces not under marks (Figs. 21,
22).
Note: To effectively reduce erosion, residue
pieces must be large enough (
1
8
") to dissipate
raindrop energy during an intense storm. Use
1
8
" diameter welding rod for visual comparison.
4. Repeat procedure at least two more times and
average three figures for final count.
5. Calculate percentage residue:
- 100’ tape/rope/string: Each 1’ mark = 1%
Example: Avg. count of 36 = 36%.
- 50’ tape: Each 1’ mark = 2%
Example: Avg. count of 15 = 30%
- 50’ rope/string: Each 6" mark = 1%
Example: Avg. count of 33 = 33%.
13
Fig. 20 - Mark on Residue
Fig. 21 - Mark Off Residue
Fig. 22 - Counting Procedure