| Agroecological zones of Kerala | |
 Kerala's districts, shaded by biome and soil types. | |
Kerala (38,863 km2; 1.18% of India's land) is situated between the Lakshadweep Sea to the west and the Western Ghats to the east. Kerala's coast runs some 590 km in length, while the state itself varies between 35–120 km in width. Geologically, pre-Cambrian and Pleistocene formations comprise the bulk of Kerala's terrain. The topography consists of a hot and wet coastal plain gradually rising in elevation to the high hills and mountains of the Western Ghats. Kerala lies between northern latitude of 8°.17'.30" N and 12°. 47'.40" N and east longitudes 74°.27'.47" E and 77°.37'.12" E.[2] Kerala's climate is mainly wet and maritime tropical,[3] heavily influenced by the seasonal heavy rains brought up by the monsoon Weather.
- ^ Jose AI, Paulose S, Prameela P & Bonny BP (eds), 2002, Package of Practices Recommendations: Crops, Kerala Agricultural University "KAU Package of Practices Recommendations: Crops, 2002 - Map of Agro-ecological Zones of Kerala". Archived from the original on 19 December 2005. Retrieved 24 February 2006., Retrieved on 18 January 2006.
- ^ Know India: Geography of Kerala
- ^ Chacko T & Renuka G, 2002, Temperature mapping, thermal diffusivity and subsoil heat flux at Kariavattom of Kerala, Proc Indian Acad Sci (Earth Planet Sci) [1], Retrieved on 12 January 2006.