map of trial sites

We had field studies at dryland farms in Hill, Fergus, and Gallatin County, Montana. Hill County lies within Montana's largest wheat producing region,  referred to as the "Golden Triangle". This region annually seeds 2.2 million acres of wheat and is characterized by a semi-arid climate with 12 to 15" of annual precipitation. Hill County is one of the drier regions of the Triangle. Wheat-fallow is the dominant cropping system with most farms managed as no till.

Location, Soil Series and pH of Field Trials

Location Trial County Soil series pH

West Havre

1

Hill

Phillips-Elloam loam

6.1

West Havre

2, 5

Hill

Phillips-Elloam loam

6.4

North Havre

3, 4

Hill

Telstad-Joplin loam

5.5

Kremlin

6

Hill

Phillips-Elloam loam

6.0

West Havre

7, 11

Hill

Scobey-Kevin clay loam

6.5

North Havre

8

Hill

Telstand-Joplin silt loam

5.5

Willow Creek

9, 10

Gallatin

Brocko silt loam

8.4

Kremlin

12, 14, 17

Hill

Scobey-Kevin clay loam

6.0

North Havre

13

Hill

Telstad-Joplin loam

6.8

North Havre

15

Hill

Telstad-Joplin loam

5.5

Denton

16

Fergus

Fairfield-Danvers clay loam

7.0

Coffee Creek

18, 20, 21

Fergus

Danvers clay

7.0

Kremlin

19

Hill

Kevin-Hilton clay loam

NA

NA – not available