Deep tillage overcomes compaction of sandy soils caused by movement of heavy machinery. Many experiments since 1981 have shown cereal yields improve as a result of deep tillage. However, the increased yield does not necessarily mean more profit when costs are taken into account. To determine the profitability of deep tillage farmers must consider its impact on other farm operations. A whole-farm analysis is needed to accurately determine the increase in profit resulting from deep tillage
Abadi, Amir and Bathgate, Andrew
"Deep tillage : keep an eye on costs as well as yields,"
Journal of the Department of Agriculture, Western Australia, Series 4: Vol. 32
, Article 7.
Available at: http://researchlibrary.agric.wa.gov.au/journal_agriculture4/vol32/iss1/7