The National Commodity and Derivatives Exchange on Tuesday marked 6,510 tn soybean, 2,230 tn mustard, and 2,050 tn of cottonseed oilcake for staggered delivery in the April contract. The exchange also marked 1,950 tn wheat, 1,330 tn castor, 830 tn guar seed, 440 tn coriander, 380 tn chana, 375 tn jeera, 370 tn barley, 315 tn guar gum, and 55 tn turmeric for staggered delivery in the same contract. The April series of these commodities will expire on Apr 20.