SB 4.17.24
tvam khalv osadhi-bijani
prak srstani svayambhuva
na muñcasy atma-ruddhani
mam avajñaya manda-dhih
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
You have so lost your intelligence that, despite my orders, you do not deliver the seeds of herbs and grains formerly created by Brahma and now hidden within yourself.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
While creating all the planets in the universe, Lord Brahma also created the seeds of various grains, herbs, plants and trees. When sufficient water falls from the clouds, the seeds fructify and produce fruits, grains, vegetables, etc. By his example, Prthu Maharaja indicates that whenever there is a scarcity in food production, the head of the government should take steps to see why production is being held up and what should be done to rectify the situation.