|
When was Corn
Planted?
|
How many days after
previous crop knock down was planted?
|
|
Previous Vegetation
|
Successive Years of Corn
|
|
Soil Drainage
|
Soil Organic Matter
Content
|
|
Tillage Method
|
Location
|
|
Growing Season
|
Residue Management
|
|
Purpose
|
Weed Infestation in or
neighbouring the field
|
|
Anthills in the
field
|
Sampling Damage
|