Exhibit 24

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS, That I,

EDWARD G. BEIMFOHR

hereby constitute and appoint Mark A. Kalafut, Francis G. Meyer and Michael L. Bennett, or each of them, with full power of substitution and resubstitution, my true and lawful attorney, for me and in my name, place and stead, to sign my name as a director of Terra Industries Inc. (the “Company”) to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2002 and any amendments or supplements thereto, and to file said Annual Report and any amendment or supplement thereto, with the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended.

I hereby ratify and confirm all that said attorneys, or each of them, or his substitute or substitutes, have done or shall lawfully do by virtue of this Power of Attorney.

WITNESS my hand this 21st day of February, 2003.

/s/    EDWARD G. BEIMFOHR        

EDWARD G. BEIMFOHR

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS, That I,

EDWARD M. CARSON

hereby constitute and appoint Mark A. Kalafut, Francis G. Meyer and Michael L. Bennett, or each of them, with full power of substitution and resubstitution, my true and lawful attorney, for me and in my name, place and stead, to sign my name as a director of Terra Industries Inc. (the “Company”) to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2002 and any amendments or supplements thereto, and to file said Annual Report and any amendment or supplement thereto, with the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended.

I hereby ratify and confirm all that said attorneys, or each of them, or his substitute or substitutes, have done or shall lawfully do by virtue of this Power of Attorney.

WITNESS my hand this 19th day of February, 2003.

/s/    EDWARD M. CARSON        

EDWARD M. CARSON

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS, That I,

ERIC K. DIACK

hereby constitute and appoint Mark A. Kalafut, Francis G. Meyer and Michael L. Bennett, or each of them, with full power of substitution and resubstitution, my true and lawful attorney, for me and in my name, place and stead, to sign my name as a director of Terra Industries Inc. (the “Company”) to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2002 and any amendments or supplements thereto, and to file said Annual Report and any amendment or supplement thereto, with the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended.

I hereby ratify and confirm all that said attorneys, or each of them, or his substitute or substitutes, have done or shall lawfully do by virtue of this Power of Attorney.

WITNESS my hand this 26th day of February, 2003.

/s/    ERIC K. DIACK        

ERIC K. DIACK

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS, That I,

DAVID E. FISHER

hereby constitute and appoint Mark A. Kalafut, Francis G. Meyer and Michael L. Bennett, or each of them, with full power of substitution and resubstitution, my true and lawful attorney, for me and in my name, place and stead, to sign my name as a director of Terra Industries Inc. (the “Company”) to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2002 and any amendments or supplements thereto, and to file said Annual Report and any amendment or supplement thereto, with the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended.

I hereby ratify and confirm all that said attorneys, or each of them, or his substitute or substitutes, have done or shall lawfully do by virtue of this Power of Attorney.

WITNESS my hand this 19th day of February, 2003.

/s/    DAVID E. FISHER        

DAVID E. FISHER

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS, That I,

MARTHA O. HESSE

hereby constitute and appoint Mark A. Kalafut, Francis G. Meyer and Michael L. Bennett, or each of them, with full power of substitution and resubstitution, my true and lawful attorney, for me and in my name, place and stead, to sign my name as a director of Terra Industries Inc. (the “Company”) to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2002 and any amendments or supplements thereto, and to file said Annual Report and any amendment or supplement thereto, with the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended.

I hereby ratify and confirm all that said attorneys, or each of them, or his substitute or substitutes, have done or shall lawfully do by virtue of this Power of Attorney.

WITNESS my hand this 19th day of February, 2003.

/s/    MARTHA O. HESSE        

MARTHA O. HESSE

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS, That I,

BURTON M. JOYCE

hereby constitute and appoint Mark A. Kalafut, Francis G. Meyer and Michael L. Bennett, or each of them, with full power of substitution and resubstitution, my true and lawful attorney, for me and in my name, place and stead, to sign my name as a director of Terra Industries Inc. (the “Company”) to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2002 and any amendments or supplements thereto, and to file said Annual Report and any amendment or supplement thereto, with the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended.

I hereby ratify and confirm all that said attorneys, or each of them, or his substitute or substitutes, have done or shall lawfully do by virtue of this Power of Attorney.

WITNESS my hand this 19th day of February, 2003.

/s/    BURTON M. JOYCE        

BURTON M. JOYCE

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS, That I,

BEN L. KEISLER

hereby constitute and appoint Mark A. Kalafut, Francis G. Meyer and Michael L. Bennett, or each of them, with full power of substitution and resubstitution, my true and lawful attorney, for me and in my name, place and stead, to sign my name as a director of Terra Industries Inc. (the “Company”) to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2002 and any amendments or supplements thereto, and to file said Annual Report and any amendment or supplement thereto, with the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended.

I hereby ratify and confirm all that said attorneys, or each of them, or his substitute or substitutes, have done or shall lawfully do by virtue of this Power of Attorney.

WITNESS my hand this 19th day of February, 2003.

/s/    BEN L. KEISLER        

BEN L. KEISLER

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS, That I,

WILLIAM R. LOOMIS, JR.

hereby constitute and appoint Mark A. Kalafut, Francis G. Meyer and Michael L. Bennett, or each of them, with full power of substitution and resubstitution, my true and lawful attorney, for me and in my name, place and stead, to sign my name as a director of Terra Industries Inc. (the “Company”) to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2002 and any amendments or supplements thereto, and to file said Annual Report and any amendment or supplement thereto, with the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended.

I hereby ratify and confirm all that said attorneys, or each of them, or his substitute or substitutes, have done or shall lawfully do by virtue of this Power of Attorney.

WITNESS my hand this 19th day of February, 2003.

/s/    WILLIAM R. LOOMIS, JR.        

WILLIAM R. LOOMIS, JR.

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS, That I,

JOHN R. NORTON III

hereby constitute and appoint Mark A. Kalafut, Francis G. Meyer and Michael L. Bennett, or each of them, with full power of substitution and resubstitution, my true and lawful attorney, for me and in my name, place and stead, to sign my name as a director of Terra Industries Inc. (the “Company”) to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2002 and any amendments or supplements thereto, and to file said Annual Report and any amendment or supplement thereto, with the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended.

I hereby ratify and confirm all that said attorneys, or each of them, or his substitute or substitutes, have done or shall lawfully do by virtue of this Power of Attorney.

WITNESS my hand this 19th day of February, 2003.

/s/    JOHN R. NORTON III        

JOHN R. NORTON III

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS, That I,

HENRY R. SLACK

hereby constitute and appoint Mark A. Kalafut, Francis G. Meyer and Michael L. Bennett, or each of them, with full power of substitution and resubstitution, my true and lawful attorney, for me and in my name, place and stead, to sign my name as a director of Terra Industries Inc. (the “Company”) to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2002 and any amendments or supplements thereto, and to file said Annual Report and any amendment or supplement thereto, with the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended.

I hereby ratify and confirm all that said attorneys, or each of them, or his substitute or substitutes, have done or shall lawfully do by virtue of this Power of Attorney.

WITNESS my hand this 19th day of February, 2003.

/s/    HENRY R. SLACK        

HENRY R. SLACK