Dr. G. Nammalvar , often called the "Messiah of Organic Farming" in South India, dedicated his life to reviving traditional agricultural practices and protecting soil health
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Uzhavukkum Undu Varalaru (There is also a History behind Farming) nammalvar books agriculture
A deep dive into restoring soil fertility and respecting the land. Iyarkai Velanmai Organic Agriculture Dr. G. Nammalvar