Research Items (2)
- Jan 2002
The present study analyzed physico-chemical properties of pond soil during Penaeus monodon culture in a semi-intensive shrimp farm in Cox's Bazar district, Bangladesh during winter 1996 to 1997. Soils were acidic with high concentrations of SO4-S, extractable Fe and Al. Soluble salt concentration were in order Na>Mg>Ca>K. The physico-chemical properties changed with flooding both under simple inundation and inundation with shrimp culture. The most noticeable change was soil pH, SO4-S and extractable Al. Extractable Al decreased a minimum value at 145 days after preparation of the culture ponds. Extractable Na and K were increased gradually while, Ca and Mg remained fairly constant throughout the entire period. The extent of change was different for the culture and the inundated ponds. Results of the present study indicated a positive effect on the improvement of acid sulphate soil in the cleared mangrove forest area because of shrimp culture.