NCDEX marked 1,940 tn of coriander, 710 tn of castor seed and 650 tn of cottonseed oilcake for staggered delivery in the September contract. The exchange also marked 210 tn each of chana and mustard seed, 162 tn of jeera and 150 tn maize for staggered delivery in the same-month contract. The September series of these commodities will expire on Sep 20, the exchange. Under the staggered delivery mechanism, sellers can indicate intention of delivery to the exchange during the tender period, which is 10 days before the contract expires.