Auteurs : Timothy P. Beary, Raj Boopathy, Paul Templet

A fungal–bacterial consortium provided by Sybron Chemicals, Inc. was used in a laboratory study in an e2ort to accelerate the decomposition of post-harvest sugarcane residue. The consortium includes the fungus Ceriporiopsis subvermispora and bacterium Cellulomonas sp., which were chosen for their cellulolytic capabilities and Azospirillum brasilense, which was chosen because it is a nitrogen-4xing bacterium. Study results indicated that the consortium sprayed over the residue and mixed in soil supplemented with 0.3% molasses showed a signi4cant di2erence for several parameters. Those measurable di2erences included visual decomposition of residue, bacterial and fungal populations, soil pH, nitrogen, and available phosphorous when compared to control and the treatment in which the consortium was sprayed over the residue but not mixed. This study indicates that this fungal–bacterial consortium may accelerate the decomposition of post-harvest sugarcane residue provided the residue is mixed with soil. Further study is necessary to re4ne the process for the future application of this consortium as a possible alternative to the current practice of open air burning of sugarcane residue by farmers.

? 2002 Elsevier Science Ltd. All rights reserved

Article en ligne sur