Four cotton tillage systems were evaluated for PM10 emissions, energy requirements, field operation times, yield, grower adoption and economic analysis. PM10 emissions, fuel usage and field operation times reduced as the number of field operations decreased. PM10 emissions and total fuel usage both reduced by a factor of four when comparing conventional tillage to the single-pass Pegasus system. Field operation times were reduced by a factor of five when comparing these same tillage systems. Replacing the Conventional system with the Pegasus system produced an additional $25.91 per acre while the Sundance and Paratill systems increased income by $16.76 and 16.06 per acre, respectively. Growers are slow to adopt minimum tillage systems even though there is an increase in revenue and there is benefit to reducing the amount of fugitive dust. However, the survey results showed that growers are reducing the number of field operations for the current conventional tillage systems.
- Compare three minimum tillage/controlled traffic systems to a conventional system in terms of profitability/efficiency, sustainability and particulate generation.
Evaluate commercially viable methods of reducing emissions from tillage operations.
Demonstrate minimum tillage systems at field days, thereby permitting first hand observation by growers, extension personnel, etc. of their functionality and performance.
Disseminate results through the popular press, Extension bulletins and technical manuscripts.