v.22. .

| Technical and Informative Notes |
| Research advances Reduced tillage for the renewal of sugar cane plantations |
| Reports Energy implications of the arrangement and operation of barometric condensers in Colombian sugar mills Climatological summary. Automated meteorological network Handling of plastic containers for agrochemicals |
| Comments Healthy seed production in Incauca and Providencia Deficiencies in the functioning of subsurface drainage: diagnosis and recommendations Activities carried out in Manuelita to give confidence to the sucrose balance |
| General Information Solid waste management at the Mayagüez sugar mill Conservation architecture Analysis services |