Tilling every other year is called rotational tillage.
No-till is the practice of never tilling a field. No-till and strip tillage are both forms of conservation tillage. Conservation tillage is a group of practices that reduce the amount of tillage needed. No-till farming is not equivalent to conservation tillage or strip tillage. It is an ancient technique with clear evidence of its use since at least 3000 B.C. Tilling can create a flat seed bed or one that has formed areas, such as rows or raised beds, to enhance the growth of desired plants. Tillage is the agricultural preparation of soil by mechanical agitation, typically removing weeds established in the previous season. using a disc harrow) but no plowing or use strip tillage. For example, some approaches may use shallow cultivation (i.e. In some cases minimum tillage or "low-till" methods combine till and no-till methods. Tillage is dominant in agriculture today, but no-till methods may have success in some contexts. "Surface seeding" or "direct seeding" is when crops are left on the surface of the soil on flatlands, this requires no machinery and minimal labor. "Direct seeding" is when crops are sown through the residue of previous crop. "Sod seeding" is when crops are sown with seeding machinery into a sod produced by applying herbicides on a cover crop (killing that vegetation). There are three basic methods of no-till farming. While conventional no-tillage systems use herbicides to control weeds, organic systems use a combination of strategies, such as planting cover crops as mulch to suppress weeds. These methods may increase the amount and variety of life in and on the soil. Other possible benefits include an increase in the amount of water that infiltrates into the soil, soil retention of organic matter, and nutrient cycling. No-till farming decreases the amount of soil erosion tillage causes in certain soils, especially in sandy and dry soils on sloping terrain. No-till farming (also known as zero tillage or direct drilling) is an agricultural technique for growing crops or pasture without disturbing the soil through tillage.
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