Editing Bojonegoro Regency (section)

=== Agriculture ===
[[File:COLLECTIE TROPENMUSEUM Tabak uit bevolkingsaanplant op droogrekken Java Sumatra Handels Mij te Bodjonegoro TMnr 10011719.jpg|thumb|left|Drying tobacco leaves in Bojonegoro during [[Dutch East Indies|colonial period]].]]
Agriculture has been the regency's main industry. The Solo River provides a fertile farming area for rice. The main crops are rice and tobacco, as well as maize. In 1984, the area of maize harvested reached 67,000 hectares with yields ranging from 1 to 1.28 t/ha.<ref>{{cite book |last=Djauhari |first=Aman |author2=Adimesra Djulin |author3=Irlan Soejono |title=Maize Production in Java |publisher=Intl Specialized Book Service Inc |year=1988 |url=http://www.uncapsa.org/Publication/cg13.pdf |isbn=979-8059-14-X |page=11 |access-date=8 February 2007 |archive-url=https://web.archive.org/web/20070928093131/http://www.uncapsa.org/Publication/cg13.pdf |archive-date=28 September 2007 |url-status=dead }}</ref> A typical farmer grows rice in the rainy season, when water is abundant, and tobacco or maize in the dry season. There is a high risk in agriculture because of seasonal uncertainty. Rice growing will fail if the rainy season ends before its time, and tobacco growing will fail if rain comes early.

Bojonegoro is one of the biggest producers of tobacco in Indonesia, with a total value of [[Indonesian rupiah|Rp]]1.2 trillion (around US$100 million) and employing 57 percent of the workforce.<ref>{{cite web |title=Kabupaten Bojonegoro |publisher=Departement of Health |url=http://bankdata.depkes.go.id/kompas/Kabupaten%20Bojonegoro.pdf |url-status=dead |archive-url=https://web.archive.org/web/20070929124658/http://bankdata.depkes.go.id/kompas/Kabupaten%20Bojonegoro.pdf |archive-date=29 September 2007 }}</ref> The majority of tobacco planted is Virginia varieties. However, Bojonegoro tobacco suffers from a high proportion of [[chlorine]],<ref>{{cite web |title=Cl content problem of Virginia tobacco grown in Vertisols in Bojonegoro |publisher=Department of Agriculture, Indonesia |url=http://perkebunan.litbang.deptan.go.id/index.php?option=com_content&task=view&id=32&Itemid=7 |url-status=dead |archive-url=https://web.archive.org/web/20070721120358/http://perkebunan.litbang.deptan.go.id/index.php?option=com_content&task=view&id=32&Itemid=7 |archive-date=21 July 2007 }}</ref> and uncertain rainfall. Most tobacco is used to make [[clove]] cigarettes (''[[kretek]]'').