Constraint analysis and performance evaluation of participatory agri-aquaculture in watersheds

Abstract

The present study was undertaken at the watershed level to identify the major constraints in adopting/developing participatory
agri-aquaculture and to make technological interventions with low input-based scientific aquaculture practices. The constraint
analysis through preferential ranking technique delineated as many as nine constraints with Rank Based Quotient values
ranging between 19.05 (priority to domestic use) to 100.0 (lack of awareness and technical knowledge) in all the three study
locations. After problem identification, an attempt was made to improve the existing agri-aquaculture practices with community
participation. Under the participatory intervention, fish yield was enhanced from 0.26-0.3 t ha-1 (before intervention) to
0.94-1.72 t ha-1 (after intervention), while the net water productivity of water harvesting structures ranged between
Rs. 4.7-5.35 m-3. The return from rabi crop was highly encouraging and farmers had additional income. Economic analysis
of the interventions clearly showed that the fish culture along with agriculture activity (post-intervention) enhanced the
annual income of the farming community by Rs. 3561 - Rs. 12533 per hectare. Further, utilisation of water from the water
harvesting structures (WHSs) during rabi crop enhanced the cropping intensity from 100 to 137%. As in the present study,
scientific approach with low input-based participatory aquaculture and multiple use of water would certainly enhance the
overall crop productivity, cropping intensity, water productivity and income.