A field calculator (FC) is a computer-based decision-support tool used for comparing farmers’ current practices with new rice-based management technologies, and the possible trade offs in environmental, socioeconomics, and biophysical aspects.
The field calculator summarizes the field data collected for rice production and creates tables indicating the environmental/economic impact of different technological packages. This tool will help researchers visualize the economic and environmental effects of adopting or combining the technologies promoted to produce rice sustainably.
Initially, data was collected for different seasons (winter-spring and autumn-winter). Diary data of Global GAP (good agricultural practice) farmers, VietGAP farmers, and Small farmer-large field (SFLF) farmers have been collected. Other field surveys were also conducted to compare the performance of the different outreach systems (Global GAP, VietGAP farmers, and SFLF farmers) with that of the control farmers in the different seasons.
Doing this will improve the scope of the field calculator, and also enable analysis of annual cropping patterns. Currently, more intensive field surveys are being conducted to determine indicators in various rice cropping systems. This method would help refine the indicators, generate a holistic understanding of production systems, and establish a more accurate data simulation of the field calculator.