425

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT
Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): August 5, 2009

TERRA INDUSTRIES INC.

(Exact name of registrant as specified in its charter)

Maryland
(State or other jurisdiction
of incorporation) 1-8520
(Commission File Number) 52-1145429
(IRS Employer
Identification Number)

Terra Centre
600 Fourth Street, P.O. Box 6000
Sioux City, Iowa (Address of principal executive offices)	51102-6000 (Zip Code)

Registrant’s telephone number, including area code: (712) 277-1340

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

þ     Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o     Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o     Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o     Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

ITEM 8.01 OTHER EVENTS

          On August 5, 2009, Terra Industries Inc. (“Terra”) issued a press release confirming receipt of a letter from CF Industries Holdings, Inc. (“CF Industries”) indicating that it is “prepared to enter into a merger agreement under which each Terra share would be exchanged for 0.465 of a share of CF Industries.” A copy of the press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

ITEM 9.01 FINANCIAL STATEMENTS AND EXHIBITS

(d) Exhibit

99.1 Press release issued August 5, 2009 by Terra.

SIGNATURES

          Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

TERRA INDUSTRIES INC.
By:	/s/ John W. Huey
	Name:	John W. Huey
	Title:	Vice President, General Counsel and Corporate Secretary

Date: August 5, 2009

EXHIBIT INDEX

Exhibit
Number	Description
99.1	Press release issued August 5, 2009 by Terra.

EX-99.1

Exhibit 99.1

	Terra Industries Inc. 600 Fourth Street P.O. Box 6000 Sioux City, IA 51102-6000 Telephone: (712) 277-1340 Telefax: (712) 277-7383 www.terraindustries.com
For immediate release	Contact: Joe Ewing
	(712) 277-7305
	jewing@terraindustries.com
	Matthew Sherman /Jamie Moser Joele Frank, Wilkinson Brimmer Katcher (212) 355-4449 msherman@joelefrank.com / jmoser@joelefrank.com
	Larry Dennedy / Charlie Koons MacKenzie Partners, Inc. (800) 322-2885 terraproxy@mackenziepartners.com

TERRA INDUSTRIES COMMENTS ON CF INDUSTRIES’ LATEST PROPOSAL

SIOUX CITY, Iowa (August 5, 2009) Terra Industries Inc. (NYSE:TRA) today confirmed receipt of a letter from CF Industries Holdings, Inc. (NYSE:CF) in which CF Industries indicates that it is “prepared to enter into a merger agreement under which each Terra share would be exchanged for 0.465 of a share of CF Industries.”

Terra’s Board of Directors will consider CF Industries’ latest proposal at a meeting to be held prior to the end of the month.

Credit Suisse Securities (USA) LLC is serving as Terra’s financial advisor, and Cravath, Swaine & Moore LLP and Wachtell, Lipton Rosen & Katz are serving as legal counsel to Terra. MacKenzie Partners is serving as proxy solicitor for Terra.

About Terra

Terra Industries Inc., with 2008 revenues of $2.9 billion, is a leading North American producer and marketer of nitrogen products.

Important information and where to find it

On June 26, 2009, Terra filed with the Securities and Exchange Commission (the “SEC”) a revised preliminary proxy statement in connection with its 2009 Annual Meeting, which is available free of charge at the SEC’s website at www.sec.gov and Terra’s website at www.terraindustries.com. Terra plans to file with the SEC and mail to its stockholders a definitive proxy statement in connection with its 2009 Annual Meeting. Investors and security holders are urged to read the revised preliminary proxy statement, which is available now, and the definitive proxy statement relating to the 2009 Annual Meeting and any other relevant documents filed with the SEC when they become available, because they will contain important information. Investors and security holders may obtain a free copy of the definitive proxy statement and other documents (when available) that Terra files with the SEC at the SEC’s website at www.sec.gov and Terra’s website at www.terraindustries.com. In addition, the

definitive proxy statement and other documents filed by Terra with the SEC may be obtained from Terra free of charge by directing a request to Terra Industries Inc., Attn: Investor Relations, Terra Industries Inc., 600 Fourth Street, P.O. Box 6000, Sioux City, IA 51102-6000.

This communication is neither an offer to purchase nor a solicitation of an offer to sell any securities. In response to the exchange offer proposed by CF Industries Holdings, Inc. referred to in this communication, Terra has filed a Solicitation/Recommendation Statement on Schedule 14D-9 with the SEC. Investors and security holders are urged to read the Solicitation/Recommendation Statement on Schedule 14D-9 because it contains important information. Investors and security holders may obtain a free copy of the Solicitation/Recommendation Statement on Schedule 14D-9 and other documents that Terra files with the SEC in connection with the exchange offer at the SEC’s Web site at www.sec.gov and Terra’s Web site at www.terraindustries.com. In addition, the Solicitation/Recommendation Statement on Schedule 14D-9 and other documents filed by Terra with the SEC in connection with the exchange offer may be obtained from Terra free of charge by directing a request to Terra Industries Inc., Attn: Investor Relations, Terra Industries Inc., 600 Fourth Street, P.O. Box 6000, Sioux City, IA 51102-6000.

Certain information concerning participants

Terra, its directors, executive officers and certain employees specified in Annex A to Terra’s revised preliminary proxy statement for the 2009 Annual Meeting, which was filed with the SEC on June 26, 2009, are participants in the solicitation of Terra’s security holders in connection with its 2009 Annual Meeting. Security holders may obtain information regarding the names, affiliations and interests of such individuals in Terra’s Annual Report on Form 10-K for the year ended December 31, 2008, which was filed with the SEC on February 27, 2009 and amended on April 28, 2009, and its revised preliminary proxy statement for the 2009 Annual Meeting, which was filed with the SEC on June 26, 2009. To the extent holdings of Terra securities have changed since the amounts printed in the revised preliminary proxy statement for the 2009 Annual Meeting, such changes have been or will be reflected on Statements of Change in Ownership on Form 4 filed with the SEC. Additional information regarding the interests of such individuals can also be obtained from the revised preliminary proxy statement relating to the 2009 Annual Meeting, which is available now, and the definitive proxy statement relating to the 2009 Annual Meeting when it is filed by Terra with the SEC. These documents (when available) may be obtained free of charge from the SEC’s Web site at www.sec.gov and Terra’s Web site at www.terraindustries.com.

Forward-looking statements

Certain statements in this communication may constitute “forward-looking” statements within the meaning of the Private Securities Litigation Reform Act of 1995. Statements made in connection with the exchange offer proposed by CF Industries Holdings, Inc. referred to in this communication are not subject to the safe harbor protections provided to forward-looking statements under the Private Securities Litigation Reform Act of 1995. Forward-looking statements are based upon assumptions as to future events that may not prove to be accurate. These statements are not guarantees of future performance and involve risks, uncertainties and assumptions that are difficult to predict. Actual outcomes and results may differ materially from what is expressed or forecasted in these forward-looking statements. As a result, these statements speak only as of the date they were made and Terra undertakes no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as otherwise required by law. Words such as “expects,” “intends,” “plans,” “projects,” “believes,” “estimates,” and similar expressions are used to identify these forward-looking statements. These include, among others, statements relating to:

• changes in financial markets,

• general economic conditions within the agricultural industry,

• competitive factors and price changes (principally, sales prices of nitrogen and methanol products and natural gas costs),

• changes in product mix,

• changes in the seasonality of demand patterns,

• changes in weather conditions,

• changes in environmental and other government regulation, and

• changes in agricultural regulations.

Additional information as to these factors can be found in Terra’s 2008 Annual Report/10-K, in the section entitled “Business,” “Legal Proceedings,” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and in the Notes to the consolidated financial statements.

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Note: Terra Industries’ news announcements are also available on its Web site, www.terraindustries.com.