Development of year round vegetable farming technologies on brackish water shrimp Gher dykes in southern Bangladesh

The experiment was conducted at farmers’ field in a village named Parsolua under Batiaghata Upazila of Khulna district at brackish water shrimp gher agro-ecological conditions/systems under CSISA-BD project with the objectives – (a) to identify the options for round the year vegetables cultivation in saline shrimp gher dyke of southern Bangladesh; (b) to validate the technology for wider dissemination in changing climate condition; (c) to increase cropping intensity in the saline prone area; and (d) to strengthen the aquaculture-agriculture systems (as use of pond bottom mud). Variable soils used for vegetable production in the experiment consisted of bottom sludge of fresh water (S1), Dyke (gher) soil (S2) and bottom soil of brackish water gher (S3) using a two crop model (i) M1bitter gourd & yard long bean (rainy season) and pumpkin & tomato (winter); and (ii) M2bottle gourd and okra (rainy season). Results reveal that the highest production mass (81.59 t/ha) was produced with bottom sludge of fresh water X M1 winter (Sweet gourd/pumpkin and tomato) and the lowest production (27.85 t/ha) was found from bottom soil of brackish water gher X M1 summer (bitter gourd and yard long bean).