This document summarizes the present status, history, and techniques for hybrid seed production of castor. It discusses that India is the leading producer of castor, with Gujarat, Rajasthan, and Andhra Pradesh being the major growing states. It then describes the two main techniques for hybrid seed production in castor - genetic male sterility and pistillate mechanisms. The pistillate mechanisms include N-type, S-type, and NES pistillate lines. The document concludes by outlining future needs for castor such as developing high yielding hybrids with improved traits and resistance to biotic and abiotic stresses.