If rivers are not polluted and are allowed to flow in their own way, or sometimes allowed to flood the land, the land will become very fertile and able to produce all kinds of vegetables, trees and plants. The word rasa means “taste.” Actually all rasas are tastes within the earth, and as soon as seeds are sown in the ground, various trees sprout up to satisfy our different tastes. For instance, sugarcane provides its juices to satisfy our taste for sweetness, and oranges provide their juices to satisfy our taste for a mixture of the sour and the sweet. Similarly, there are pineapples and other fruits. At the same time, there are chilies to satisfy our taste for pungency. Although the earth’s ground is the same, different tastes arise due to different kinds of seeds. As Kṛṣṇa says in Bhagavad-gītā (7.10), bījaṁ māṁ sarva-bhūtānām: “I am the original seed of all existences.” Therefore all arrangements are there. And as stated in Īśopaniṣad, pūrṇam idam: complete arrangements for the production of all the necessities of life are made by the Supreme Personality of Godhead. People should therefore learn how to satisfy the yajña-puruṣa, Lord Viṣṇu. Indeed, the living entity’s prime business is to satisfy the Lord because the living entity is part and parcel of the Lord. Thus the whole system is so arranged that the living entity must do his duty as he is constitutionally made. Without doing so, all living entities must suffer. That is the law of nature.
The words taravo bhūri-varṣmāṇaḥ indicate very luxuriantly grown, big-bodied trees. The purpose of these trees was to produce honey and varieties of fruit. In other words, the forest also has its purpose in supplying honey, fruits and flowers. Unfortunately in Kali-yuga, due to an absence of yajña, there are many big trees in the forests, but they do not supply sufficient fruits and honey. Thus everything is dependent on the performance of yajña. The best way to perform yajña in this age is to spread the saṅkīrtana movement all over the world.