Agriculture

= = =Agriculture: = Growing plants and rearing animals for food, clothing and other useful products is called agriculture. =media type="custom" key="25199448" =

Steps of agriculture (Crop production)

The seven steps of agricultural practices carried out by farmers are-
 * 1) Preparation of soil
 * 2) Sowing
 * 3) Adding manure and fertilisers
 * 4) Irrigation
 * 5) Removing weeds/Weeding
 * 6) Harvesting
 * 7) Storage

media type="custom" key="25199776" Nitrogen Cycle: It is a natural cyclic process in the course of which atmospheric nitrogen enters the soil and becomes part of living organisms, before returning to the atmosphere. Nitrogen, an essential part of the amino acids, proteins and nucleic acids is a basic element of life. Although 78% by volume of the atmosphere is nitrogen gas, but this gaseous nitrogen must be converted to some usable forms before it can be consumed by living organisms. This is accomplished through the nitrogen cycle. Certain bacteria and blue green algae present in the soil fix nitrogen from atmosphere and convert it into inorganic nitrogen compounds. Such compounds are directly taken up by plants through their root system. The nitrogen then passes through the food chain from plants to herbivores to carnivores. When plants and animals die, bacteria and fungi present in the soil convert the nitrogenous waste into nitrogenous compounds to be used by plants again. Certain other bacteria convert some part of these nitrogenous wastes to free nitrogen through ‘Denitrification’, which goes back into the atmosphere.

http://www.wikihow.com/Practice-Sustainable-Agriculture