Avaliação emergética dos sistemas de produção do Sítio Passarini, Assentamento Itamarati-MS

Abstract

The quest for productive sustainability as a way of avoiding expenses and maintaining natural resources for the future is present in several means of production that exist today on our planet, especially in small rural properties where small-scale family farming predominates. Regardless of the production system, there are a number of factors involved from planting to harvesting, which are always allied to three types of contributions: Environmental, Human and Technological Contributions. Therefore, the objective of this study was to carry out an emergency evaluation of the productive systems present in the Passarini (Watermelon, Tomato and Sweet-Corn) Site located in the Itamarati CUT-I Settlement, taking into account all necessary contributions until the products are commercialized, performing calculations through the Emergy Methodology. Comparing the results obtained in the three productive systems evaluated, the tomato production system was the most damaging from the environmental and economic point of view, presenting the lowest Renewable Percentage (R / U) 0.16, the lowest Emergy Yield Ratio (EYR) 1.50, the highest Emergy Investment Ratio (EIR) 2.00, the highest Environmental Loading Ratio (ELR) 5.19 and the lowest Environmental Sustainability Index (ESI) 0.29. The Watermelon production system had the highest Renewable Percentage (R / U), 0.29, the second highest Emergy Yield Ratio (EYR), 1.75, the second highest Emergy Investment Ratio (EIR) 1.33, the lower Environmental Loading Ratio (ELR) 2.44 and the highest Environmental Sustainability Index (ESI), 0.72, being considered the most sustainable production system from the environmental point of view. The Sweet-Corn production system presented the second highest Renewable Percentage (R / U), 0.18, the highest Emergy Yield Ratio (EYR), 2.04, the lowest Emergy Investment Ratio (EIR) 0.96, the second highest Environmental Loading Ratio (ELR), 4.69 and the second highest Environmental Sustainability Index (ESI), 0.43, being considered the most positive and profitable production system for the producer from the economic point of view. Considering the results obtained during the work, the emergence methodology proved to be an effective tool for the calculation of the evaluated productive systems, resulting in realistic values of the environmental, social and economic contributions that involve each productive system.