Submitted on: 13 July 2001.
Revised on: 15 October 2001.
Accepted on: 02 December 2001.
___________________Agronomy for Sustainable Development
Submitted on: 04 June 1999.
Revised on: 31 July 1999.
Accepted on: 24 September 1999.
___________________Agronomy for Sustainable Development
Submitted on: 23 November 1998.
Revised on: 02 March 1999.
Accepted on: 24 March 1999.
___________________Agronomy for Sustainable Development
Submitted on: 12 April 2022.
Revised on: 04 August 2022.
Accepted on: 25 August 2022.
___________________Agronomy for Sustainable Development
Submitted on: 25 April 2020.
Revised on: 23 June 2020.
Accepted on: 04 August 2020.
___________________Agronomy for Sustainable Development
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