Krishi is a word denotes existence; and may denotes eternal tranquility. From the combination of these two states is Vishnu, born of the Satvata race, called Krishna.
कृषि वाचकः शब्दो च निर्वृतिवाचकः। विष्णुस्तद्भावयोगाच्च कृष्णो भवति सात्वतः॥