Chapter I) Grass- Its form and physiological function; Chapter II) Assimilation of nitrogen and material transformation in plants; Chapter III) Improvement of forage crops by breeding for yield and quality; Chapter IV) Breeding strategies of Forage grasses; Chapter V) Cytogenetics and breeding of forage grasses; Chapter VI) Evolution of breeding methodology for improvement of forage crops; Chapter VII) Forage legumes; Chapter VIII) Botany of forage crops; Chapter IX) Exploration of heterosis through inter specific hybridisation in forage crops; Chapter X) Resume of research work on forage crops in Tamil Nadu; Chapter XI) Minor forage crops.