Originally, El Nino niÃ±o was the name used for warmer than normal sea surface temperatures in The Pacific ocean off the coast Of South. America, Now El nino niÃ±o has come to refer to a whole Complex Of pacific-ocean sea surface temperature changes and global. weather events
About Permaculture The Origin of Permaculture. Permaculture is a word originally coined by Bill Mollison and David Holmgren in the mid 1970âs to describe an âintegrated, evolving system of perennial or self-perpetuating plant and animal species useful to man.â
Preparation of soil is the first step in cultivating a crop for food production. The soil is prepared for sowing the seeds of the crop, by ploughing, leveling and manuring. Let us now discuss these steps in detail. 1. Ploughing. The process of loosening and upturning the soil is called ploughing.