agriculture sins will be removed by sacrifice on the threshing floor

 By cutting trees, by rending the earth, and by Destroying insects and worms, what sin is incurred by a tiller of the soil is removed by the sacrifice on the threshingfloor. [The sacrifice on the threshing floor consists of gifts of paddy at that place.

parasura smriti chaper2 - 10

By making a gift of one-sixth part to the sovereign of the land, one twenty-first for the sake of the gods, and one-thirtieth to the Brahman caste, one is freed from all sins.