In Finland, Peko is known as 'Pekko of the Field'. First mentioned by bishop
Agricola in 1551 as the one who granted the growth of barley,
Christfried Ganander called him the god of barley. He gave good
wort called 'milk of the field', and drinking it was called tasting or drinking Pellon Pekko.
Martti Haavio connected Pellon Pekko to
Saint Peter. According to Harva, Finnish-Estonian Pekko is the
haltija of barley and drinks made of it. He also considered Pekko to have originally been the personification of barley.
Anna-Leena Siikala supported Harva's view over Haavio's. Additionally, as beer in
runic songs is often described as something which makes people festive and sing, Harva called Pekko the "ancient Finnish
Bacchus" and called him the god of song and poetry as well. Pekko is further connected to beer as in some parts of
Tavastia, the word itself has meant beer or
sahti. In Tavastia, the name appeared in the form and . In
North Karelia in the early 1900s, Pellon Pekka sometimes meant the
haltija of the field, but usually was simply something which was used to scare children. In Finnish and Karelian
runic songs, Pellon Pekko is usually mentioned when listing different types crops, along with "rye of
Runkateivas". In them, Pellon Pekko works as name for an awn. Among the
Forest Finns, Kaisa Vilhunen said that at the end of harvest, the last sheaf was thrown to be a pillow for Peltopekka. Harva thought that the tradition from
Kaavi in which the milk of a black sheep is brought to the field when barley is becoming dry means a sacrifice to Peko. A rare Karelian song states that Pekka created a
swidden and Onni then sowed barley and brewed the first beer. Onni has been seen as the personification of luck, but Siikala argued that Onni is the same as Osmo mentioned in Finnish runic songs, the mythic sower of barley and brewer of beer. This, in Siikala's opinion, proves that Peko is an older personification or protector of barley and not a reference to Saint Peter. In
Hietajärvi, Suomussalmi, if someone had hurt themself while falling onto the ground, soil was boiled and the liquid given to the patient, while reading a spell where the pain is asked if it came from the ground, Peko from the field, and is ordered to go back into the ground. Peko is sometimes associated with Estonian
Pikne (Pitkne), Baltic
Perkūnas or even Christian
Saint Peter. ==Seto traditions==