No-till farming

No-till farming
Young soybean plants are being planted in long rows
Young soybean plants thrive in and are protected by the residue of a wheat crop. This form of no-till farming provides good protection for the soil from erosion and helps retain moisture for the new crop.

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. No-till farming decreases the amount of soil erosion tillage causes in certain soils, especially in sandy and dry soils on sloping terrain. Other possible benefits include an increase in the amount of water that infiltrates into the soil, soil retention of organic matter, and nutrient cycling. These methods may increase the amount and variety of life in and on the soil. 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.[1]

There are three basic methods of no-till farming. "Sod seeding" is when crops are sown with seeding machinery into a sod produced by applying herbicides on a cover crop (killing that vegetation). "Direct seeding" is when crops are sown through the residue of previous crop. "Surface seeding" or "direct seeding" is when seeds are left on the surface of the soil; on flatlands, this requires no machinery and minimal labor.[2]

While no-till is agronomically advantageous and results in higher yields, farmers wishing to adapt the system face a number of challenges. Established farms may have to face a learning curve, buy new equipment, and deal with new field conditions.[3][4] Perhaps the biggest impediment, especially for grains, is that farmers can no longer rely on the mechanical pest and weed control that occurs when crop residue is buried to significant depths. No-till farmers must rely on chemicals, biological pest control, cover cropping, and more intensive management of fields.[5][6][7]

Tillage is dominant in agriculture today, but no-till methods may have success in some contexts. In some cases minimum tillage or "low-till" methods combine till and no-till methods. For example, some approaches may use shallow cultivation (i.e. using a disc harrow) but no plowing or use strip tillage.

  1. ^ "What is No-Till Farming?". Regeneration International. 24 June 2018. Retrieved 6 November 2020.
  2. ^ Willy H. Verheye, ed. (2010). "Soil Engineering and Technology". Soils, Plant Growth and Crop Production Volume I. EOLSS Publishers. p. 161. ISBN 978-1-84826-367-3.
  3. ^ Flatt, Courtney (3 January 2023). "No-till farming, cover crops reduce greenhouse gasses but cost growers at the start, study finds". KNKX Public Radio. Retrieved 12 June 2024.
  4. ^ Krause, Mark A.; Black, J. Roy (1995). "Optimal Adoption Strategies for No-till Technology in Michigan". Review of Agricultural Economics. 17 (3): 299. doi:10.2307/1349575. JSTOR 1349575.
  5. ^ Colbach, Nathalie; Cordeau, Stéphane (10 May 2022). "Are No-Till Herbicide-Free Systems Possible? A Simulation Study". Frontiers in Agronomy. 4. doi:10.3389/fagro.2022.823069. ISSN 2673-3218.
  6. ^ "Ergot of Cereals and Grasses". Government of Saskatchewan. Retrieved 12 June 2024.
  7. ^ Friedrich, Theodor (1 August 2005). "Does No-Till Farming Require More Herbicides?". Outlooks on Pest Management. 16 (4): 188–191. doi:10.1564/16aug12.