That's what I thought too, but recently someone told me it was to keep the evil spirits away.
The Divine Liturgy always
sends the demons fleeing... regardless of the dominant colors of the liturgical season.
Very interesting indeed. Thanks for sharing!
From the article:
When Christianity spread throughout Lithuania, priests turned these ancient walkings around grain fields into blessings of the grain fields.
People gathered in one farmstead upon the priests' arrival and went together to bless the grain fields. Feasting took place after the blessing.
I love Orthodoxy's eagerness to transform (not obliterate) pious pagan customs into the fullness of Christian worship.