|
|
|
|
|
|
|
||
|
|
||
|
|||
Subsoiling for Increased Water Storage for Summer Fallow on Sodic Soils in Asotin CountyDoug
McMillan Objective To test the effectiveness
and timing of subsoiling to improve moisture infiltration and water conservation
on sodic soils. The test will compare subsoiling in the fall prior to
summer fallow versus subsoiling in the fall prior to seeding winter wheat.Location:
Asotin County, WA - Cloverland Treatments Subsoil in fall before
summer fallow Comments All plots were chiseled following harvest for Russian thistle control in 1993. The first subsoiling treatment in the fall before summer fallow was performed on September 15, 1993 at a depth of 20" on 2' centers. The entire field was chiseled in the spring to a depth of 10". The field was cultiweeded 3 times during the summer fallow period of 1994. The field was fertilized with 65 lbs N and 10 lbs S per acre. The second treatment, subsoiling in the fall after summer fallow and before seeding, will be performed in the fall of 1994 when adequate soil moisture is present. Then the field will be seeded to winter wheat in the fall if adequate moisture is present or in the spring wheat if fall moisture is not adequate to establish a winter wheat crop. Data
Conclusion Extremely droughty conditions through last winter and the summer fallow year showed no advantage to subsoiling these soil types. |
||||||||||||||||||||||||||||||||||||||||
 Contact
us: Hans Kok, (208)885-5971
|
Accessibility | Copyright
| Policies | WebStats | STEEP Acknowledgement |
||||||||||||||||||||||||||||||||||||||||
