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<P align="center" style="font-size: 14pt"><B>UNITED STATES<BR>
SECURITIES AND EXCHANGE COMMISSION<BR>
<FONT style="font-size: 12pt">Washington, D.C. 20549
</FONT></B>

<P align="center" style="font-size: 18pt"><B>FORM 8-K</B>

<P align="center" style="font-size: 12pt"><B>CURRENT REPORT<BR>
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934</B>

<P align="center" style="font-size: 10pt"><B>Date of Report (Date of earliest event reported): February 10, 2009</B>

<P align="center">

<P align="center" style="font-size: 24pt"><B>TERRA NITROGEN COMPANY, L.P.<BR></B>
<FONT style="font-size: 10pt">(Exact name of registrant as specified in its charter)
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    <TD style="border-bottom: 1px solid #000000"><B>Delaware</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-bottom: 1px solid #000000"><B>033-43007</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-bottom: 1px solid #000000"><B>73-1389684</B></TD>
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<TR valign="top">
    <TD>(State or other Jurisdiction of Incorporation)</TD>
    <TD>&nbsp;</TD>
    <TD>(Commission File Number)</TD>
    <TD>&nbsp;</TD>
    <TD>(IRS Employer Identification No.)</TD>
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    <TD style="border-bottom: 1px solid #000000"><B>Terra Centre<BR>600 Fourth Street, P.O. Box 6000<BR>Sioux City, Iowa <BR></B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-bottom: 1px solid #000000"><B>51102-6000</B></TD>
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    <TD>(Address of Principal Executive Offices)</TD>
    <TD>&nbsp;</TD>
    <TD>(Zip Code)</TD>
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<P align="center" style="font-size: 10pt">Registrant&#146;s telephone number, including area code: <B>(712) 277-1340</B>


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    <TD nowrap>(Former name or former address if changed since last report.)</TD>
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<P align="left" style="font-size: 10pt">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:

<P align="left" style="font-size: 10pt">
<FONT face="Wingdings">&#111;</FONT> Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)<BR><BR>
<FONT face="Wingdings">&#111;</FONT> Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)<BR><BR>
<FONT face="Wingdings">&#111;</FONT> Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))<BR><BR>
<FONT face="Wingdings">&#111;</FONT> Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))<BR>


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<P align="center" style="font-size: 10pt; display: none">1
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<P align="justify" style="font-size: 10pt"><B>ITEM 2.02 RESULTS OF OPERATIONS AND FINANCIAL CONDITION.</B>


<P align="justify" style="font-size: 10pt; text-indent: 8%">On February&nbsp;10, 2009, Terra Nitrogen Company, L.P. issued a press release setting forth Terra Nitrogen Company,
L.P.&#146;s fourth quarter and full year 2008 earnings and announcing a cash distribution. A copy of the press release is
furnished herewith as Exhibit&nbsp;99.1.


<P align="justify" style="font-size: 10pt"><B>ITEM 9.01 FINANCIAL STATEMENTS AND EXHIBITS.</B>


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    <TD width="3%" nowrap align="left">(c)</TD>
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    <TD><DIV style="text-align: justify">Exhibits</DIV></TD>
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    <TD width="3%" nowrap align="left">99.1</TD>
    <TD width="1%">&nbsp;</TD>
    <TD><DIV style="text-align: justify">Press Release issued February&nbsp;10, 2009 reporting fourth quarter and full year
2008 results and announcing a cash distribution.</DIV></TD>
</TR>

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<P align="center" style="font-size: 10pt"><B>SIGNATURES</B>



<P align="justify" style="font-size: 10pt; text-indent: 4%">Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused
this report to be signed on its behalf by the undersigned, thereunto duly authorized.

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    <TD colspan="2" valign="top" align="left">TERRA NITROGEN COMPANY, L.P.</TD>
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    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">By:<BR>
Its:
</DIV></TD>
    <TD align="left" valign="top">Terra Nitrogen GP Inc.<br>
General Partner</TD>
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  <TD style="border-bottom: 1px solid #000000" align="left">/s/ John W. Huey</TD>
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  <TD align="left">&nbsp;</TD>
  <TD align="left"><I>John W. Huey</I><BR>
<I>Vice President, General Counsel and</I><BR><I>Corporate Secretary</I></TD>
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<P align="justify" style="font-size: 10pt">Date: February&nbsp;10, 2009

<P align="center" style="font-size: 10pt">&nbsp;

<P align="center" style="font-size: 10pt; display: none">2
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<P align="center" style="font-size: 10pt"><B>EXHIBIT INDEX</B>


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    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Exhibit<BR>
Number
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><BR>
Description</TD>
</TR>
<TR style="font-size: 1px">
    <TD valign="top" style="border-top: 1px solid #000000"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
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<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">99.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Press release issued February&nbsp;10, 2009, announcing fourth quarter and full year
2008 results and announcing a cash distribution.</TD>
</TR>
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<P align="center" style="font-size: 10pt">&nbsp;

<P align="center" style="font-size: 10pt; display: none">3
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Filed by Bowne Pure Compliance
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): February 10, 2009
TERRA NITROGEN COMPANY, L.P.
(Exact name of registrant as specified in its charter)
Delaware
033-43007
73-1389684
(State or other Jurisdiction of Incorporation)
(Commission File Number)
(IRS Employer Identification No.)
Terra Centre
600 Fourth Street, P.O. Box 6000
Sioux City, Iowa
51102-6000
(Address of Principal Executive Offices)
(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:
o
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 2.02 RESULTS OF OPERATIONS AND FINANCIAL CONDITION.
On February 10, 2009, Terra Nitrogen Company, L.P. issued a press release setting forth Terra Nitrogen Company,
L.P.'s fourth quarter and full year 2008 earnings and announcing a cash distribution. A copy of the press release is
furnished herewith as Exhibit 99.1.
ITEM 9.01 FINANCIAL STATEMENTS AND EXHIBITS.
(c)
Exhibits
99.1
Press Release issued February 10, 2009 reporting fourth quarter and full year
2008 results and announcing a cash distribution.
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused
this report to be signed on its behalf by the undersigned, thereunto duly authorized.
TERRA NITROGEN COMPANY, L.P.
By:
Its:
Terra Nitrogen GP Inc.
General Partner
/s/ John W. Huey
John W. Huey
Vice President, General Counsel and
Corporate Secretary
Date: February 10, 2009
EXHIBIT INDEX
Exhibit
Number
Description
99.1
Press release issued February 10, 2009, announcing fourth quarter and full year
2008 results and announcing a cash distribution.