Exhibit 12.1

Terra Industries Inc.																Q3 YTD			Q3 YTD
Ratio of earnings to fixed charges	2004			2005			2006			2007			2008			2008			2009
Earnings
Earnings income from continuing operations		65,714			31,618			4,729			220,757			632,772			468,691			155,587
Income tax expense (benefit)		(6,249	)		20,544			9,590			127,316			239,851			229,742			55,849
Earnings from continuing operations before income tax		59,465			52,162			14,319			348,073			872,623			698,433			211,436
Add:
Noncontrolling interest expense		11,207			13,667			11,286			50,281			67,684			52,369			20,354
Equity investee income		—			(21,415	)		(17,013	)		(13,491	)		(151,815	)		(134,651	)		(13,337	)
Fixed charges		67,068			78,052			69,137			77,147			108,626			86,719			59,889
Distributed income of equity investees		—			46,375			35,875			29,450			72,760			55,385			25,075
		78,275			116,679			99,285			143,387			97,255			59,822			91,981
Subtract:
Preferred security and deferred dividends		9,101			18,741			13,961			40,339			73,433			60,467			33,682
TOTAL EARNINGS		128,639			150,100			99,643			451,121			896,445			697,788			269,735
Fixed charges:
Interest expense		53,134			53,478			47,991			29,100			27,369			20,587			20,247
Preference security dividends of Terra Nitrogen Company, L.P.		8,072			13,607			8,861			35,239			69,557			56,642			33,631
Preferred dividends		1,029			5,134			5,100			5,100			3,876			3,825			51
One third of rentals on operating leases		4,833			5,833			7,185			7,708			7,824			5,665			5,960
		67,068			78,052			69,137			77,147			108,626			86,719			59,889
Ratio of earnings to fixed charges		1.9			1.9			1.4			5.8			8.3			8.0			4.5