Fertilizer
Srimad-Bhagavatam
SB Canto 4
King Pṛthu was presented with various gifts from the general populace and predominating deities of all planets. The oceans and seas were full of valuable jewels and pearls, and the hills were full of chemicals and fertilizers. Four kinds of edibles were produced profusely.
As stated in Īśopaniṣad, this material creation is supplied with all the potencies for the production of all necessities required by the living entities—not only human beings, but animals, reptiles, aquatics and trees. The oceans and seas produce pearls, coral and valuable jewels so that fortunate law-abiding people can utilize them. Similarly, the hills are full of chemicals so that when rivers flow down from them the chemicals spread over the fields to fertilize the four kinds of foodstuffs. These are technically known as carvya (those edibles which are chewed), lehya (those which are licked up), cūṣya (those which are sucked) and peya (those which are drunk).