गामाविश्य च भूतानि धारयाम्यहमोजसा। पुष्णामि चौषधीः सर्वाः सोमो भूत्वा रसात्मकः ॥

gām āviśhya cha bhūtāni dhārayāmy aham ojasā puṣhṇāmi chauṣhadhīḥ sarvāḥ somo bhūtvā rasātmakaḥ

Permeating the soil, I support beings by my vital energy, and having become the delicious Soma I nourish all plants.

In plain words: Krishna says he enters the earth and holds up all living things with his energy. He also becomes Soma, a life-giving juice, and feeds all the plants.