Methods for improving the agriculture of sesame, an Improved Non-Dehiscent (IND) sesame class and methods for breeding IND are disclosed. The IND sesame holds its seed in capsules for four or more weeks after ideal harvesting time, during extended adverse weather conditions, thus offering the grower flexibility as to when to harvest. The methods also improve current agricultural methods for growing sesame by allowing growers to leave the crop in the field for a longer period of time without the loss of seeds and concomitant reduced yield. The grower is able to reduce the ratio of combine harvesters required for mechanical harvest of sesame crops. Further, a method of growing crops in geographical areas previously unsuitable for sesame agriculture is disclosed. IND allows ready release of seed from the capsule during mechanized harvesting with minimal broken seed.