Name the books written by Parasara and mention the important aspects discussed in those books.

Parasara wrote two books. They are
a) Krishi parasaram
In Krishi parasaram, parasara described about agriculture and also mentioned about weeds. This is the oldest book on agriculture.
b) Vrikshayurveda
In Vrikshayurveda, he described different types of forests and also the external & internal characters of plants including medicinal plants.