Calibrating Your Rangeland Drill

USDA Forest Service
Missoula Technology and Development Center

Diverse plant communities are essential for the health and vitality of our Nation's rangelands.
When rangelands have been devastated by wildfires, overgrazing, mining or weed infestations,
they need to be restored. Seeding in rough and uneven terrain is not easy. The rangeland drill
was developed for rangeland restoration beginning in 1951. Since then, the rangeland drill has
become a sophisticated piece of equipment that can deliver more diverse seed mixes in precise amounts. This DVD will help you learn how to properly calibrate a traditional or a minimum-till drill
so you will get the desired results without wasting valuable seed.

The DVD includes:

  Kemmerer drill operating in the field

seed drops

Development of the Rangeland Drill
The Essential Features
Understanding Seed Terminology
The Planting Mix and Bulk Seeding Rate per Acre

CalibrationDVDdisc  Checking a Drill's Seed Output
  - the Wheel Circumference method
  - the Seed per Row-Foot method
  - the Small Bag per Land Area method

Adjusting the Seed Box Outputs
Drill Calibration Summary [PDF]

  drill seedboxes

Single copies of the DVD may be ordered from:

U.S. Forest Service
Missoula Technology and Development Center
5785 Highway 10 West
Missoula, MT 59808-9361
phone: (406)329-3978
fax: (406)329-3719
email: wo_mtdc_pubs@fs.fed.us

Produced by:
Lisa Outka-Perkins, Project Leader
U.S. Forest Service
Missoula Technology and Development Center

USDA Forest Service, Rocky Mountain Research Station, Boise, ID
USDA Natural Resources Conservation Service, Aberdeen Plant Materials Center, Aberdeen, ID
USDI Bureau of Land Management, Vale District Office, Vale, OR
USDI Bureau of Land Management, Idaho State Office, Boise, ID
Truax Co., Inc., New Hope, MN
Oregon State University Malheur Experiment Station, Ontario, OR

Background &
Projects &