Birds Limited research indicates that crop damage caused by birds is not strongly influenced by the tillage system. Waterfowl damage does not depend on the type of tillage system. Wild ungulates Damage from deer, elk and other wild ungulates does not appear to be strongly influenced by the tillage system used in the field. More recently, repellents and other non-toxic methods have been tried without much success. Control methods and strategies are the same in direct seeded and conventional tillage fields.
Ground squirrels are able to rapidly invade an area.
Thus it is critical to apply control measures as soon as ground squirrels are seen in a field. Although pocket gophers and mice are slower to invade, early control measures will keep their population levels down. Poisons Acute poisons such as strychnine alkaloid and zinc phosphide have long been used to reduce rodent numbers. Both are currently registered for controlling pocket gophers and ground squirrels. As well, anticoagulant poisons, such as chlorophacinone and diphacinone, are now registered for both species.