Futures contracts of all constituents in the edible oil basket, barring crude palm oil, traded lower on domestic exchanges. Extending weakness from the previous session, contracts of soybean closed around 0.2% lower on the NCDEX tailing losses in key contracts on CBOT. Futures contracts of soybean on the US exchange traded 0.5% lower as traders covered their profits after prices were higher in past few sessions due to crop concerns. The most-active August soybean contract traded at $10.0625 a bushel on the CBOT, down 0.7% from the previous close.