Some cropland areas are planted to a mixture that provides the seasonal requirements for the wildlife species desired. These areas are not harvested. Some cropland areas are planted to a single crop that provides some of the seasonal requirements for the wildlife species desired. These areas are not harvested. Plants are not selected to provide the seasonal requirements, but do provide some of the requirements.
Crop selection is done with no regard to impact on wildlife.
Tillage methods in cropland are such that moderate winter food is left over winter. Tillage methods in cropland are such that fair amounts of winter food is left over winter. Tillage methods in cropland are such that little or no winter food is left over winter. Cover or shelter Areas are devoted to Conservation Reserve Program or other similar retirement program. Some areas are left to provide the seasonal requirements for the wildlife species desired.