The document discusses India's 15 agro-climatic zones which were delineated based on physiography, soils, climate, cropping patterns, and development of irrigation and mineral resources. It provides details on the characteristics of each zone such as annual rainfall, major crops grown, irrigation sources, and challenges and recommendations. The zones vary from humid alpine to arid desert conditions. Understanding the zones can help scientific management of regional resources to meet food, fibre, fodder and fuel wood needs sustainably. Local populations can benefit from knowledge of their zone's characteristics and related programs to diversify and stabilize incomes.