Editing Tillage (section)

===Conservation tillage===
Conservation tillage<ref group="note" name="Systems" /> leaves at least 30% of crop residue on the soil surface, or at least 1,000&nbsp;lb/ac (1,100&nbsp;kg/ha) of small grain residue on the surface during the critical [[soil erosion]] period. This slows water movement, which reduces the amount of soil erosion. Additionally, conservation tillage has been found to benefit predatory arthropods that can enhance pest control.<ref>Tamburini, G., De Simone, S., Sigura, M., Boscutti, F., Marini, L. and Kleijn, D. (2016), Conservation tillage mitigates the negative effect of landscape simplification on biological control. ''[[Journal of Applied Ecology]]'', 53: 233–241. [[doi:10.1111/1365-2664.12544]]</ref> Conservation tillage also benefits farmers by reducing fuel consumption and soil compaction. By reducing the number of times the farmer travels over the field, significant savings in fuel and labor are made.

Conservation tillage is used on over 370 million acres, mostly in South America, Oceania and North America.<ref>{{Cite web|url=https://news.stanford.edu/2019/12/06/reduced-soil-tilling-helps-soils-yields/|title=Reduced soil tilling helps both soils and yields|last=Horton|first=Michelle|date=2019-12-06|website=Stanford News|language=en|access-date=2019-12-08}}</ref> In most years since 1997, conservation tillage was used in US cropland more than intensive or reduced tillage.<ref name="CRM" />

However, conservation tillage delays warming of the soil due to the reduction of dark earth exposure to the warmth of the spring sun, thus delaying the planting of the next year's spring crop of corn.<ref>{{cite web |url=http://www.ag.ndsu.edu/pubs/ageng/machine/AE-1370/ae1370.htm |title=Strip Till for Field Crop Production |publisher=Ag.ndsu.edu |date=2012-11-14 |access-date=2012-12-20}}</ref>

* [[No-till]] – plows, disks, et cetera are not used. Aims for 100% ground cover.
* [[Strip-till]] – Narrow strips are tilled where seeds will be planted, leaving the soil in between the rows untilled.<ref name="tce">{{cite web |title=Best Management Practices for Conservation/Reduced Tillage|url=http://publications.tamu.edu/WHEAT/PUB_wheat_Best%2520Management%2520Practices%2520for%2520Conservation%2520Tillage.pdf |publisher=Texas Cooperative Extension, The Texas A&M University System |url-status=dead |archive-url=https://web.archive.org/web/20140810225128/http://publications.tamu.edu/WHEAT/PUB_wheat_Best%20Management%20Practices%20for%20Conservation%20Tillage.pdf |archive-date=10 August 2014 }}</ref>
* [[Mulch-till]] - Soil is covered with mulch to conserve heat and moisture. 100% soil disturbance.
* Rotational tillage – Tilling the soil every two years or less often (every other year, or every third year, etc.).<ref name="tce"/>
* Ridge-till{{Explain|date=July 2021}}