Water Footprint Assessment of Durian Monthong Before Harvesting and the Harvesting Period in Rayong Province

Abstract

This research analyzed the Water Footprint Assessment of Durian Monthong orchards before harvesting and during harvesting periods in Rayong Province. Analysis of data was done using the CROPWAT 8.0 program. The data was collected from responses to a questionnaire from 56 farmers in five districts of Rayong province. The data from the study area revealed that only five districts of Rayong had Durian Monthong orchards. Secondary data included climate data, rainfall data, crop water use, and soil series data.
The results of this study determined the volume of water used for cultivation from rainwater, water reservoirs, and open canals. Fertilizers and pesticides were used during the maintenance period. The crop water usage of Durian Monthong orchards before harvesting (1-5 years) showed that the crop water use (CWUproc) was 4,672 m3/rai, consisting of 1,029 m3/rai of green water use (CWUgreen), 1,372 m3/rai of blue water use (CWUblue), and 2,271 m3/rai of gray water use (CWUgray). The first harvesting period (6-10 years) indicated that the total water footprint (WFproc) was 4,527 m3/ton, consisting of 1,140 m3/ton of green water footprint (WFgreen), 1,520 m3/ton of blue water footprint (WFblue), and 1,867 m3/ton of gray water footprint (WFgray). In addition, the second harvesting period (11-20 years) showed that the water footprint (WFproc) was 3,592 m3/ton, consisting of 850 m3/ton of green water footprint (WFgreen), 1134 m3/ton of blue water footprint (WFblue) and 1,608 m3/ton of gray water footprint (WFgray). The results of this research could be used for managing the water used for agriculture.